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| All storms listed are real storms that have affected Oregon. |
The 2024 Oregonian cyclone season was an extremely active and destructive year of cyclones affecting the US state of Oregon. The season featured 20 total cyclones, 19 named storms, 17 severe storms, 11 intense storms, and 5 extreme storms. The season featured Storm Rowan, which is tied for the strongest storm to ever affect the Pacific Northwest with a cyclone in October 2021. Cyclones were named by the JXCA, the official cyclone agency located within the state. This season was the first in which cyclones affecting Oregon were designated, with the procedure beginning on February 19. This was also when the season ogfficially began.
One day after forecasts began, Storm Amelia became the first named storm of the season. It ran up the coast of Oregon, impacting Washington. In early February, three named systems formed: Benjamin, Charlotte, and Daniel. Charlotte became the first Category 5 storm, and Daniel became the most intense, with a pressure of 966 mbar. Daniel also contributed to many power outages in coastal regions. Later in March, three more storms formed: Evelyn, Felix, and Gianna. Evelyn became the first system to make landfall in Oregon as a well-organized system. Felix and Gianna contributed to clouds in coastal Oregon for five days straight. Felix also became the first system to be absorbed by another named storm, being swallowed by Gianna on March 29.
In April, three systems formed. The first of the three was Henry, a southward-moving cyclone that impacted California in the final stages of its life. The storm did minimal damage in the region. The second system was Isabella, one of the shortest-lived cyclones of the season, only lasting 24 hours. However, it still managed to achieve Category 2 status in that time. The final system was James, a very small cyclone that retrograded near Haida Gwaii, Canada and made landfall in Oregon. May was the second-to-least active month of the year, with no systems affecting Oregon, and only one NPHC. June featured Storms Kinsley and Liam within a day of each other. Liam became the first Oregonian cyclone to make landfall in Alaska and was later found to be the remnants of Typhoon Ewiniar.
No systems would form until mid-to-late August, when NPHC 10 and 11 formed within a day of each other. However, a few days later, Thirteen became the first system in two months, bringing some of the worst rain ever recorded in an Oregonian cyclone to Oregon. In September, Mia formed, becoming the first named storm since June, bringing thunderstorms and rain to Oregon and Washington. The powerful Extreme Storm Noah would form on October 26, becoming the strongest storm of the season in terms of both wind speed and pressure at the time, beating out Charlotte and Daniel. Noah would drop large amounts of rain and snow across the Pacific Northwest before dissipating three days later on October 29. The effects of Noah would only be worsened by Olivia just days later, which affected the same areas Noah did. Olivia would have a very clear eye, but dissipated before it could make landfall. In November, Parker would form, and, despite being the third extreme storm of the season, it didn't impact land as hard as Noah or Olivia. But, the next storm, Quinn, would. Despite only being a Category 2, Quinn would cause power outages across southern Oregon, and it would spawn the beginning stages of a tornado, an extremely rare occurrence.
Thirteen Nearby Potentially Hazardous Cyclones formed during the 2024 season. These systems are commonly abbreviated as NPHCs and are listed near the bottom of the page. An NPHC is a cyclone that threatens to affect Oregon, but doesn't end up doing so.
Storm scale[]
Cyclones that affect the state of Oregon are ranked by power using this scale, known as the Oregonian Cyclone Wind Scale (OCWS). The scale uses both sustained winds and wind gusts to measure the strength of a cyclone. The mean wind speed between sustained winds and gusts is found and ranked on this scale. The scale was developed in February 2024 by the JXCA.
| Category | Wind speed |
| Nearby Potentially Hazardous Cyclone | 34+ mph |
| Oregonian Depression | 34-39 mph |
| Oregonian Storm | 40-46 mph |
| Category 1 Severe Storm | 47-51 mph |
| Category 2 Severe Storm | 52-57 mph |
| Category 3 Intense Storm | 58-63 mph |
| Category 4 Extreme Storm | 64-69 mph |
| Category 5 Extreme Storm | 70+ mph |
Seasonal summary[]
As of September 1, the ACE of this season was recorded at 14.35 units. This number represents sum of the squares of the maximum sustained wind speed (knots) for all named storms while they are at least Oregonian storm intensity, divided by 10,000. Therefore, Oregonian depressions are not included.
Early season activity[]
Storm Gianna (right) absorbing the remnants of Storm Felix (top-left) late on March 29.
On February 19, 2024, the JXCA began tracking cyclones that affected the state of Oregon, USA. Around this time, a cyclone had organized off the coast of California, slowly moving toward the state. It gained the name Amelia, running up the coast of Oregon and impacting Washington. There were no other named systems in February. On March 4, a small cyclone organized a few hundred miles of the coast of Oregon, bringing clouds to the area. It was named Benjamin. This system was extremely short lived, dissipating just the next day. Just days later, a powerful storm formed off the coast, becoming the first Category 5 Oregonian cyclone of the season, gaining the name Charlotte. This storm quickly fell apart, making way for a new system near Vancouver Island, Canada, that was named Daniel. It quickly struck British Columbia, then dissipated due to the tall mountains of the area. A little over a week later, Evelyn formed off the coast of California, and became the first system to make landfall in Oregon, doing so as a weakening Oregonian depression. This was followed days later by the formation of Felix, bringing clouds and rain to Oregon for two days, and even two waterspouts. The system was eventually swallowed by another new, growing system, which was named Gianna. Gianna slowly moved down the US west coast, eventually impacting Baja California in Mexico and dissipating.
On April 11, a system formed near Vancouver Island, Canada, moving quickly south. It gained the name Henry two days later. The storm stalled off the coast of California, before slowly weakening and dissipating late on April 14. One week later on April 21, a system broke off of a main rotation near Alaska, gaining the name Isabelle before quickly impacting Canada and dissipating the next day. The next storm to form was James, which formed in a similar way to Isabella, however James retrograded and became a very small cyclone. At James's peak intensity, it was only around 250 miles wide. After retrograding, James made landfall in Oregon. May was by far the least active month of the year, only featuring NPHC 08 in the earlier parts of the month. However, at the very start of June, Storm Kinsley formed, becoming the first system to affect Oregon in over a month. Kinsley was short-lived however, and just one day later, Liam formed, becoming the first intense cyclone in around two months. Liam only affected Oregon for a day, before curving northward, and then northwest, becoming the first Oregonian cyclone to make landfall in Alaska. Liam dissipated on June 7. Two days later, it was discovered that Liam was likely the remnants of Typhoon Ewiniar, which had dissipated about a week prior.
The remnants of Storm Noah (top-right) and the cyclone that would later be named Storm Olivia (left) together on October 27.
Mid-to-late season activity[]
The next systems to form were NPHC 10 and 11, forming on August 19 and 20 respectively. However, neither were named, as they quickly weakened below Oregonian depression status and dissipated. However, just a few days later on August 24, Oregonian depression Thirteen would form, becoming the first named system in two months. Thirteen brought some of the worst wind and rain to Oregon that had ever been recorded in an Oregonian cyclone, with gusts in Bandon, Oregon in excess of 40 miles per hour. It only lasted one day before it dissipated over southern Oregon. In September, Mia formed, becoming the first storm to use an official name since June. It impacted Oregon and Washington, bringing heavy rain and thunderstorms to the coastal areas. The next storms to form were NPHC 12 and 13 in October. NPHC 12 would be absorbed by the growing NPHC 13 as NPHC 13 was named Noah, becoming the strongest storm this season in terms of winds with winds of 77 mph. It also the most intense storm, with a pressure of 962 mbar. After making a loop, Noah would bring wind and rain showers to all of the coastal Pacific Northwest, as well as snow in northern British Columbia and other nearby areas. Noah would affect these areas until October 29, when it dissipated after making landfall on Calvert Island, Canada. Olivia would form two days later, affecting the same areas Noah did days prior with a similar amount of devastation. Olivia acquired a clear eye-like structure on October 31 but would quickly lose it. After rapidly weakening throughout November 1, Olivia would dissipate on November 2. Together, Noah and Olivia would be remembered as the two powerful cyclones with widespread effects across the Pacific Northwest and southern Alaska.
Almost two weeks later, Parker would form, and it would move very quickly toward Oregon. Despite being one of the strongest storms of the year, Parker did not deal as much damage as the previous two storms, Noah and Olivia. Parker would only last around 24 hours before dissipating near Graham Island, Canada. A storm that would pack a punch, however, was Quinn. Quinn formed not too long after Parker's dissipation immediately bringing heavy rains to the Pacific Northwest, which would turn into power outages that night. Quinn would stall for 24 hours before finally making landfall in Washington, dissipating soon after. However, Quinn's remains would spawn a funnel cloud near Monroe, Oregon, the beginning stages of a tornado. Despite it not touching down, the funnel cloud was still a rare occurrence, and the first such occurrence caused by an Oregonian cyclone.
Systems[]
Severe Storm Amelia[]
| Category 1 tropical cyclone | |
  | |
| Duration | February 20 – February 21 |
|---|---|
| Peak intensity | 85 km/h (50 mph) (10-min) 996 hPa (mbar) |
On February 20, a system moved into the Oregonian AOR, at the time only at tropical storm status. It was given the name Amelia by the JXCA, becoming the first named storm of the 2024 season, and the first named Oregonian storm in the history of the state. An interesting part of Amelia's structure was the fact that it took on the appearance of the different cyclones, however the system only had one main rotation. Amelia also had a relatively low pressure of 996 mbar. The system moved northwestward, gaining Category 1 status that evening. This was short lived, however, as the system began rapidly weakening, and it moved quickly out of the basin on February 21, with its remnants impacting Washington soon after its official dissipation.
Amelia marked the very first named system in Oregon's history, and the start of the very first season. Amelia formed two days after tracking of Oregonian systems began.
Storm Benjamin[]
| Tropical storm | |
  | |
| Duration | March 5 – March 6 |
|---|---|
| Peak intensity | 65 km/h (40 mph) (10-min) 1007 hPa (mbar) |
At 00:00 UTC on March 5, an extratropical cyclone entered the Oregonian AOR with winds of 41 mph. The JXCA designated it as Benjamin. The storm headed southwest, weakening rapidly. It began dissipating as it neared the coastline, maintaining tropical depression status throughout the night. The next day at 00:00 UTC, or exactly one day later, the JXCA announced that the storm had dissipated.
Benjamin had a very bad structure, likely the worst one of a designated storm since tracking began. The system was likely only designated because it was a learning tool for the JXCA, and the weather center was testing new instruments. Benjamin may have been useful in the predictions of all other cyclones in the month of March.
Extreme Storm Charlotte[]
| Category 5 tropical cyclone | |
  | |
| Duration | March 10 – March 11 |
|---|---|
| Peak intensity | 110 km/h (70 mph) (10-min) 981 hPa (mbar) |
Late on March 8, a system began organizing in the north Pacific heading towards the US west coast. On March 10 this system moved into the Oregonian AOR and was noted by the JXCA, which designated it Charlotte. The JXCA also noted high winds and an unusually low pressure, and a strong wind warning was issued. Heavy rain was also expected. The storm quickly moved eastward and intensified from a Category 3 to Category 5, slamming into the Oregon coast overnight. As it did so, it quickly lost its structure, and the JXCA stated that the system had dissipated on March 11 at 00:00 UTC in their last advisory on the storm.
Due to heavy rain and strong winds, several power outages were reported along the coast of Oregon. Thankfully, most of these outages only lasted for a few minutes, with the longest reported one still being under an hour.
Intense Storm Daniel[]
| Category 3 tropical cyclone | |
  | |
| Duration | March 12 – March 13 |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min) 966 hPa (mbar) |
Midday on March 11, a large area of clouds formed an area of circulation around its center as it sped east at around 50 mph. At 00:00 UTC the next day, the JXCA designated the storm Daniel, becoming the fourth storm of the season. Strong winds were expected overnight as the storm continued in the same direction. Storm Charlotte had previously had a very low pressure; however, Daniel had an even lower pressure, with a recorded 966 mbar near the center. The predicted direction for the storm was east, however overnight the storm curved slightly to the north, impacting Bella Bella, British Columbia, Canada around 12:00 UTC on March 12. The JXCA officially noted its dissipation 12 hours later on March 13. Daniel is tied for the shortest-lived Oregonian cyclone of 2024 with Storm Isabella.
Severe Storm Evelyn[]
| Category 1 tropical cyclone | |
  | |
| Duration | March 22 – March 25 |
|---|---|
| Peak intensity | 75 km/h (45 mph) (10-min) 997 hPa (mbar) |
On March 19, a system began forming nearby NPHC 03, spinning the two into a Fujiwhara interaction. the system was forecast to swing NPHC 03 towards the Oregon coast, bringing clouds and possible wind. However, NPHC 03 dissipated that same day, with its remnants being swallowed the system. Instead, the system swung itself towards the coast, gaining the designation Five on March 22, as it was only a depression at the time. Overnight, the system gradually strengthened, gaining Oregonian storm status the next morning. By the storm's second advisory at 00:00 UTC on March 23, it was at its peak of 43 mph winds, and the JXCA designated it Evelyn, making it the fifth named storm of the season. The system stalled off the coast of Oregon, bringing wind and rain to the western portion of the state. During the time it was stalling, it slowly weakened, and by the next advisory on March 24 it was at 40 mph, barely an Oregonian storm. Around the same time, Evelyn started creeping towards the Oregon coast, and at 08:10 UTC that day, it made landfall directly on the city of Coos Bay, Oregon. Almost immediately after it made landfall, it began to dissipate, likely due to wind shear and a difference in elevation. The system broke apart and evaporated only 8-12 hours after it made landfall.
Soon after the last advisory was issued, the JXCA ran a reanalysis on Evelyn, showing that it had been much stronger than originally thought. Instead of the original 43 mph peak, Evelyn had reached 49 mph, a Category 1 on the Oregonian scale. The JXCA upgraded the storm at 01:20 UTC on March 25.
Intense Storm Felix[]
| Category 3 tropical cyclone | |
  | |
| Duration | March 27 – March 29 |
|---|---|
| Peak intensity | 100 km/h (65 mph) (10-min) 983 hPa (mbar) |
Early on March 26, the JXCA put its eye on an area of clouds in the middle of the North Pacific Ocean. The agency forecasted a large cyclone to form around a few hundred miles to the east of Vancouver Island, Canada, before impacting the Pacific Northwest. Sure enough, this system formed overnight. and gained the name Felix in the next advisory at 01:40 UTC the next day. The storm slowly moved to the southeast, approaching the coast as forecasted the day before. It slowly weakened to Category 2 status, which it held until the next advisory on March 28. Even though the wind speed went down, the pressure went up slightly from 986 mbar to 983 mbar. Readings suggest it may have been even lower a few hours prior. Over the course of the night, the system shifted to a more northern direction as it began to dissipate. By the next advisory on March 29, the system had weakened to Oregonian storm status. Felix then began moving southwards, towards the now growing Storm Gianna. Over the course of the day, Gianna ripped Felix apart, and it officially dissipated late that evening.
On March 28, several witnesses reported two waterspouts had formed from this system, one near Brookings, and another near Gold Beach, about 25 miles apart. Many news articles were put up on these two waterspouts around 21:00 UTC that day, and the news was spread throughout the nearby counties. This makes Felix the first Oregonian cyclone to have reported waterspouts forming from it.
Intense Storm Gianna[]
| Category 3 tropical cyclone | |
  | |
| Duration | March 29 – April 1 |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min) 992 hPa (mbar) |
Late on March 28, a band of clouds in the western North Pacific Ocean began forming into an extratropical cyclone. Although the system had not fully formed yet, the JXCA marked it as NPHC 04 on March 29. Throughout the night, the system grew into a comparatively small cyclone, as it also started barreling toward San Francisco, California. By the next day, the system was affecting both Oregon and California, and therefore it gained the name Gianna, making it the first NPHC to gain a name. Gianna was expected to make landfall near San Jose, California overnight, however, the system shifted southwest, and began sliding down the California coast. In doing this, it pulled all of the nearby clouds into it, giving the Oregon coast a sunny day. By March 31, Gianna had weakened to Category 1 intensity, and was then forecast to dissipate near Baja California. This forecast turned out to be accurate, as the system did exactly that throughout the next day. By evening on that same day, the system was affecting San Diego, California. It was shown to be at Oregonian depression intensity, and it weakened further to a remnant a few hours later. At 12:00 UTC on April 1, the remnants of Gianna made landfall near the city of San Vicente in Baja California, Mexico, and the system collapsed soon after. The JXCA officially marked its dissipation later that evening.
On April 4, the JXCA conducted a reanalysis on Felix and Gianna, and found that Gianna had been a powerful Category 3 storm on March 29. Its category was changed soon after.
Severe Storm Henry[]
| Category 2 tropical cyclone | |
  | |
| Duration | April 12 – April 15 |
|---|---|
| Peak intensity | 85 km/h (50 mph) (10-min) 1006 hPa (mbar) |
Late on April 11, two systems organized near Graham Island, Canada. The southernmost one was the stronger one, and it was noted as NPHC 06 at the next advisory on April 12. This system moved quickly southward as its northern neighbor NPHC 07 dissipated. The system grew exponentially over the course of the next day, becoming a much larger cyclone. It slowly curved southeast, turning toward California. The system gained the name Henry not too long later. The next day, it stalled just off the coast of San Francisco, bringing clouds to the region for the entire day. Henry slowly began weakening, and it officially dissipated at 00:00 UTC on April 15, just before the system would've made landfall.
Three days later on April 18, a reanalysis proved that the system had strengthened to a Category 2 before nearly making landfall in California. Its category was soon changed.
Severe Storm Isabella[]
| Category 2 tropical cyclone | |
  | |
| Duration | April 21 – April 22 |
|---|---|
| Peak intensity | 85 km/h (50 mph) (10-min) 1004 hPa (mbar) |
At 18:00 UTC on April 20, the outer bands of a cyclone near Alaska broke off from the main system, forming a completely new cyclone near Vancouver Island, Canada. The storm quickly moved northwest, gaining the name Isabella the next day at 00:00 UTC. Isabella was not forecast to live for very long, as it was expected to slam into the coast of British Columbia. Over the course of the night, this exact thing happened to Isabella, and the system made landfall near Raft Cove Provincial Park on Vancouver Island at 03:10 UTC that day. From that point on, the system rapidly deteriorated, officially dissipating at 18:00 UTC that day, having lasted only 24 hours. It is tied with Storm Daniel as the shortest-lived Oregonian cyclone of 2024.
Severe Storm James[]
| Category 2 tropical cyclone | |
  | |
| Duration | April 28 – May 1 |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min) 992 hPa (mbar) |
At 18:00 UTC on April 26, a system began forming from the outer bands of a cyclone near Alaska, breaking off from the main system and forming near Graham Island, Canada. At the advisory 6 hours later, the JXCA did not recognize the system, as it was heavily surrounded by fog. This made the center of the system invisible, and therefore it was left ignored. Over the course of April 27, the fog cleared around the storm, leading the center to become more visible as the outer bands of the storm reached the Pacific Northwest, and it received the name James at 01:00 UTC on April 28. By that point, the system's center was only 100 miles west from Graham Island. The storm would quickly move northwest, before beginning to stall around 12:00 UTC the same day. The storm barely moved until the next advisory 12 hours later, where it was shown that the storm had intensified slightly in terms of wind speed. The pressure had slightly dropped. The system was also much smaller than all other Oregonian cyclones in 2024. The system began to slowly move southward, before turning southwest around 10:00 UTC on April 29. James rapidly began to weaken, and at the next advisory on April 30, it had weakened to Oregonian storm status. The weak system sped up rapidly, making landfall near Netarts, Oregon at 18:40 UTC that same day as a remnant, not even strong enough to be an Oregonian depression. As soon as James made landfall, the system fell apart, and was no longer identifiable just two hours later. The JXCA announced its dissipation at 02:00 UTC on May 1.
Severe Storm Kinsley[]
| Category 2 tropical cyclone | |
  | |
| Duration | June 3 – June 4 |
|---|---|
| Peak intensity | 85 km/h (50 mph) (10-min) 989 hPa (mbar) |
Around midday on May 31, a cyclone began to form in the Gulf of Alaska. In the next JXCA advisory, the storm was forecasted to move just north of Oregon, not affecting it at all. Therefore, the system remained unknown. However, over the course of the next few days, the system's path would change, forming a new center closer to Vancouver Island. The system began dropping rain over most of Oregon, and the system was named Kinsley, becoming the first named system in over a month. Overnight, the system began to slow down, nearly stalling nearby Vancouver Island, and at 17:30 UTC on June 3, Kinsley made landfall near the town of Hesquiaht on the island. As soon as Kinsley impacted the island, it rapidly weakened, and by the next advisory, Kinsley was officially marked as dissipated.
Further analysis on Kinsley was performed on June 16 and showed that Kinsley had briefly reached low-end Category 2 intensity. Its category was soon changed.
Intense Storm Liam (Ewiniar)[]
| Category 3 tropical cyclone | |
  | |
| Duration | June 4 – June 7 |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min) 976 hPa (mbar) |
On June 3, a large cyclone entered the Oregonian Area of Responsibility. At the next JXCA advisory, the system was already impacting Oregon, and gained the designation Liam. Liam was a very intense storm, becoming the first intense storm in around two months, and having the lowest pressure since Storm Daniel around three months prior, at 976 millibars. Liam made a northward turn overnight, expected to dissipate soon after. By the next advisory, Liam was barely affecting Oregon; the outer rainbands were nipping at the coast. the rainbands would also soon break apart as Liam entered the Gulf of Alaska the next day. The system maintained its intensity that same night, curving northwest on the morning of June 5. Liam staying nearly stationary just south of Alaska throughout that day. However, at 12:00 UTC on June 6, Liam made landfall on Montague Island, Alaska, becoming the first Oregonian cyclone to make landfall in Alaska, and the northernmost landfall of any Oregonian cyclone. Soon after it made landfall, Liam began to dissipate, and the last advisory on the system was made at 01:00 UTC the next day.
At the next JXCA advisory on June 9, further analysis on Liam was conducted, it was discovered that Liam had likely originated from or was the same system as Typhoon Ewiniar, which had dissipated on May 31. The extratropical remnants of Ewiniar traveled across the northern Pacific Ocean, and gathered together into a new cyclone, which was named by the JXCA. This was the first such occurrence of a tropical cyclone entering the Oregonian region.
Depression Thirteen[]
| Tropical depression | |
  | |
| Duration | August 24 – August 24 |
|---|---|
| Peak intensity | 55 km/h (35 mph) (10-min) 1010 hPa (mbar) |
On August 23, a cyclone began organizing off the coast of Oregon, bringing light winds as soon as it formed. At the JXCA advisory that day, the system was not recognized, due to not displaying rotation on models. Throughout the day, the system became better organized, and was officially recognized as an Oregonian depression at 00:00 UTC on August 24, being designated as Thirteen. While the advisory was released, strong winds and rain were being recorded as far inland as Eugene, Oregon, with gusts in Bandon being in excess of 40 mph, some of the highest winds ever recorded from an Oregonian cyclone. Despite this, the system only reached 37 mph sustained winds, keeping it at Oregonian depression intensity. However, only six hours later, the system fell below 34 mph, and the JXCA officially announced its dissipation. The remnants of Thirteen went on to make landfall in Klamath, California at 14:00 UTC that day. The remnants were no longer recognizable by the next advisory.
Thirteen was notable for being the second designated Oregonian depression, with Evelyn being first. It was the only Oregonian depression to stay at that intensity. Thirteen brought some of the strongest gusts to Oregon seen in an Oregonian cyclone, as well as heavy rain, which fell at an angle due to the wind. Some of the worst-hit locations were Bandon, Coos Bay, Brookings, Gold Beach, and several towns along Umpqua Highway in Oregon, as well as Crescent City in California. Thirteen was the first Oregonian cyclone to be recognized in over two months.
Storm Mia[]
| Tropical storm | |
 | |
| Duration | September 11 – September 12 |
|---|---|
| Peak intensity | 75 km/h (45 mph) (10-min) 1004 hPa (mbar) |
A cyclone began organizing off of the Oregon coast on September 10. By 00:00 UTC the next day it was affecting Oregon. However, for an unknown reason, the cyclone was left unnamed. Throughout the day, the unnamed cyclone swung itself toward the Oregon coast. Around 10:00 UTC, the system switched its center point further eastward, putting it near the Washington coast. The system caused thunderstorms in Oregon and Washington throughout the night. Slowly weakening, it began to stall off of Washington. By 21:00 UTC that same day, the cyclone dipped below Oregonian depression status. It wasn't until 00:00 UTC on September 12, when the system officially dissipated, that the JXCA recognized the cyclone, designating it as Mia. The sky cleared throughout the day.
Around midday on September 11, Mia brought thunderstorms and heavy rain to the Oregon coast, with minor flooding in some areas. Mia was the first designated Oregonian cyclone since June.
Extreme Storm Noah[]
| Category 5 tropical cyclone | |
 | |
| Duration | October 26 – October 29 |
|---|---|
| Peak intensity | 120 km/h (75 mph) (10-min) 962 hPa (mbar) |
On October 25, the JXCA identified a developing cyclone south of Alaska. The storm was moving slowly east-southeastward. The JXCA found it had winds similar to NPHC 12's at its peak, with a slightly lower pressure. The JXCA gave it a surprisingly high 70% chance of naming in 48 hours, one of the highest ever seen for an NPHC. It was named NPHC 13. The system strengthened slightly overnight, becoming a Category 5-equivalent cyclone. By the time of the next JXCA advisory, the system was already affecting Oregon, bringing strong winds and rain. It would be given the official name Noah, becoming the first named system in over a month. As soon as it was named, it became the strongest storm of the year in terms of wind speed, with winds of 77 mph. It also had a pressure of 970 mbar. This pressure would later fall to 962 mbar, making it the most intense storm of the year, ahead of Daniel. Overnight, the system would make a loop, turning to a more northeastward path, approaching Graham Island, Canada. At the next advisory, it was found Noah had weakened into a Category 3 intense storm, far from the 77 mph winds it had the previous day. However, since it was now closer to the coast, more wind and rain was recorded, especially on Victoria Island, Canada, although everywhere between Anchorage, Alaska and Northern California was being affected. Although a landfall on Graham Island was forecasted, Noah curved to a more westward path overnight, instead passing south of the island later in the day. For unknown reasons, no JXCA advisory was issued on October 28. By that point, Noah had entered the Queen Charlotte Sound. The now weakening system made landfall on Calvert Island, Canada at 06:00 UTC that day. After making landfall, Noah would quickly disintegrate over southern British Columbia, being completely unrecognizable by the time daylight arrived. Noah officially dissipated at 00:00 UTC on October 29 over British Columbia, as recognized by the JXCA.
Noah dropped a large amount of rain during its lifespan, drenching most of the Pacific Northwest. Areas surrounding Washington's Salish Sea experienced around one inch of rain in two to three hours. In addition to this, northern British Columbia, southern Yukon Territory and areas surrounding Juneau, Alaska experienced large amounts of snow, possibly reaching half a foot in some areas. An area of high pressure covered the areas Noah impacted after it had dissipated, bringing sunlight to affected areas, which dried up the rain and snow fairly quickly. Noah marked the beginning of a period of activity at the end of the season, which Olivia would continue in the following days. In conclusion, Noah was a devastating cyclone in terms of rain, and one of the strongest known Oregonian cyclones.
Intense Storm Olivia[]
| Category 3 tropical cyclone | |
 | |
| Duration | October 31 – November 2 |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min) 990 hPa (mbar) |
On October 29, a large area of clouds originating from a cyclone north of Hawaii began to spin again. The system became fairly strong as it developed its center. By the next day, the system was very strong, with a central pressure as low as 973 mbar. Despite being very close to Oregon, the system was not designated. Overnight, the system made a loop, allowing it to affect land. Rain and thunder were already being reported overnight, further worsening the effects of Noah just days earlier. As it moved southeast, it gained an eye-like hole in its center. At the next JXCA advisory on October 31, the system was designated Olivia, due to its effects on the Pacific Northwest. High surf warnings came into effect overnight. Olivia continued east-southeastward; however, it began to weaken. By daylight on November 1, Olivia was barely recognizable; a funnel of clouds that barely resembled a cyclone. Despite its appearance, it remained a weakening Oregonian storm, and it managed to live just one more day before it weakened below an Oregonian depression. Olivia officially dissipated at 00:00 UTC on November 2. It never made landfall.
Olivia's effects on the Pacific Northwest were very severe, especially in Oregon. As previously mentioned, high surf warnings were put into effect for Oregon during October 31 and November 1. Along with this, heavy rain and strong winds were seen, as well as thunder, a rare occurrence in Oregon. Olivia only worsened the effects of Noah just days prior, and together the two cyclones will be remembered due to their week-long reign of terror on the Pacific Northwest.
Extreme Storm Parker[]
| Category 4 tropical cyclone | |
 | |
| Duration | November 11 – November 12 |
|---|---|
| Peak intensity | 110 km/h (70 mph) (10-min) 973 hPa (mbar) |
Early on November 10, the JXCA noted a cyclone quickly approaching the Pacific Northwest. Winds were measured at around Category 4 extreme storm intensity. The system began to impact the coast late in the day, and at the next JXCA advisory on November 11, the cyclone was named Parker. It had a somewhat low pressure of 973 mbar, as well as 68 mph winds, making it the first storm to stabilize at Category 4 intensity recorded in the basin. Parker was measured to be moving very fast, around 45 mph. However, later reanalysis showed this number may have been an error in the models, as it was only moving around 30 mph, or 2/3 of the measured speed. However, 30 mph is still quite quick, and Parker's clouds, which were reported to have brought strong wind and rain overnight, had already dissipated by the morning. This left Parker with only its weakening center, which dropped the storm from 68 to 37 mph in just 24 hours, equivalent to a drop from a Category 4 extreme storm to an Oregonian depression. Parker officially dissipated at 00:00 UTC on November 12, around the time of the next JXCA advisory. Parker's remnants would go on to make landfall on Graham Island, Canada at 01:10 UTC.
Despite Parker being the third extreme storm of the season, it wasn't as damaging as the previous systems, Noah and Olivia. This may have been due to the fact that Parker was moving quite quickly, and it didn't last very long. Parker was notable for being the first storm of the season to stabilize at Category 4 extreme storm intensity, which also didn't last long.
Severe Storm Quinn[]
| Category 2 tropical cyclone | |
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| Duration | November 13 – November 15 |
|---|---|
| Peak intensity | 95 km/h (60 mph) (10-min) 984 hPa (mbar) |
Late on November 11, high wind warnings were put into effect for the Oregonian counties of Coos and Curry. The JXCA took note of this, and a correlation was found to a cyclone that was, at the time, south of Unalaska, Alaska. This cyclone was moving east at a rapid pace, and it only took 24 hours for it to travel the 1,000 mile journey to the Pacific Northwest. At 00:00 UTC on November 13, the JXCA would designate the system Quinn. Quinn was only a Category 2 severe storm at the time, weaker than the JXCA had anticipated. However, it was moving at around 45 mph, which significantly increased the strength of gusts in the storm. Overnight, the high wind warning was proven to have been useful, as strong wind and heavy rain both occurred. This continued into the morning hours, when power outages began to happen. Although the wind and rain didn't last all day, the power outages did, ranging from one hour to 12 hours. At the next JXCA advisory, Quinn had barely weakened to a Category 1 severe storm, meaning it stayed around the same strength for 24 hours. Quinn had also barely moved throughout that time period. However, this would soon change, as Quinn made near Grayland, Washington, at 06:30 UTC that night, where it then quickly dissipated throughout the day. However, its dissipation would not be fully recognized until November 16, as no advisory was issued by the JXCA on the 15th.
Despite being the weakest system in two months, Quinn was a very notable one. Quinn brought heavy rains to Oregon, at points reaching up to 0.5 in/h. This caused power outages in many areas, especially southern Oregon. However, one of the most notable things Quinn did happened after it dissipated. Late on November 15, a funnel cloud, the beginning stage of a tornado, was spotted near Monroe, Oregon. The funnel did not touch the ground, therefore it could not be classified as a tornado, but tornadoes and funnel clouds are both rare occurrences west of the Rocky Mountains. Quinn is the only known Oregon cyclone tracked by the JXCA to have created a possible tornado.
Extreme Storm Rowan[]
For more information, see November 2024 Northeast Pacific bomb cyclone on Wikipedia.
| Category 5 tropical cyclone | |
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| Duration | November 20 – November 23 |
|---|---|
| Peak intensity | 155 km/h (100 mph) (1-min) 942 hPa (mbar) |
A small area of cloud southeast of Japan began its journey westward on November 14. As the system moved, it slowly grew, starting out with a 100-mile radius on November 14 and becoming nearly 1000 miles long by the 18th. The long line of clouds interacted with a weak nearby cyclone on November 18, propelling it toward the Pacific Northwest across 24 hours. By then, the storm was noticed by the JXCA, who took no interest in the storm, as it had not shown any signs of rotation. Overnight, however, the storm would form an area of rotation at its core, which then extended outward. Then, the storm began a process known as bombogenesis, a faster form of rapid intensification, where a storm sometimes drops around 10 millibars of pressure in just an hour. This form of intensification had never been seen before in an Oregonian cyclone, and it shocked weather centers in Oregon. By the time daylight had arrived, the cyclone was already one of the strongest even seen in the Pacific Northwest. However, it wouldn't stop there, as by the next JXCA advisory at 00:00 UTC on November 20, it had reached winds of 96 mph, over 20 mph higher than the previous highest set by Noah. It also had an insane pressure of 944 mbar. The storm was named Rowan. The pressure would drop to 942 mbar at around 02:30 UTC that night, tying the record for lowest barometric pressure in an Oregonian cyclone with the October 2021 cyclone. Rowan was already bringing heavy rain reaching around 0.3 in/h in some areas and wind gusts reaching at most 81 mph in Port Orford, Oregon and 79 mph in nearby Gold Beach. This would cause widespread power outages across the Pacific Northwest. The storm would continue battering the coast until the morning came, when it then quieted down. Rowan also began to curve from northeast to northwest, avoiding landfall. In a similar fashion to Parker just a week earlier, Rowan's outer bands would begin to disintegrate as they moved inland, which would also cause Rowan to lose 30 mph. However, since the storm was so powerful, it remained a Category 4 extreme storm after this process. After giving a short break to the Pacific Northwest, Rowan would strike again, forming more clouds and pushing them at the coast. However, these clouds would become detached from Rowan, forming into their own system, which would later be named Sophia. Rowan immediately entered a Fujiwhara interaction with Sophia, propelling it southwest, and later straight south. Despite all this, Rowan remained a strong Category 3 intense storm. By then, Rowan was starting to lose its shape.
Other systems[]
NPHC 01[]
NPHCs 06 (bottom) and 07 (top) together on April 11. NPHC 06 would later become Storm Henry.
On February 24, The JXCA noted a large cyclone to the west of San Diego, California. The system had just finished a loop and began heading eastward. The JXCA designated the system NPHC 01. It quickly began losing its structure as it quickly heading towards land, eventually being swallowed by the jet stream early on February 28.
NPHC 02[]
On March 7, a system started to form in the open northern Pacific waters, heading towards Alaska. It was named NPHC 02. As it moved north, chances of naming decreased, and no further advisories were issued.
NPHC 03[]
Following nightfall on March 17, a large area of fog gathered near the coast of Oregon and was dropped on cities lining the coast (Coos Bay, Newport, Florence, etc.) the next two days. On March 19, a storm began gathering along the coast, overlapping the fog. Seeing this, the JXCA noted that the storm had already been affecting Oregon, and therefore made forecasts for the next two days. As the storm was very weak, it was not named, and instead designated NPHC 03. The JXCA forecasted a Fujiwhara interaction with another nearby cyclone (Later Evelyn,) swinging NPHC 03 closer to the coast and bringing clouds and possible rain. Due to this, its chances of naming were very high. However, the system unexpectedly weakened over the course of the next few hours, becoming a remnant low late on March 19.
NPHC 05[]
Late on April 3, a cyclone began affecting much of coastal Oregon. During the advisory the next day, the JXCA's models were uncertain of whether it was a cyclone or not, due to its strange structure. The storm was left unnamed. Overnight, the system gathered into a better-shaped cyclone, battering the California coast. It gained the name NPHC 05 during the next advisory. The system made landfall in Half Moon Bay, California at 02:40 UTC. It slowly moved over California, and by the time the next advisory, it was centered over northern Nevada. According to the JXCA, the area was "too mountainous for readings," and its chances of naming were lowered to zero. The system dissipated early on April 6. The system may have also played a role in the formation of a cyclone which brought snow to eastern Wyoming for several days straight.
NPHC 07[]
Midday on April 11, two systems organized near Graham Island, Canada. The northernmost system was the weaker of the two, and the closest to the island. It gained the designation NPHC 07 the next day at 00:00 UTC. The system immediately weakened, slowly being ripped apart by its southern neighbor, which would later go on to become Storm Henry. It officially dissipated at 15:00 UTC that day.
NPHC 08[]
On May 4, the outer bands of a system centered in the Gulf of Alaska began approaching the west coast of the United States. At the next advisory on May 5, the JXCA designated the large system NPHC 08, with very low expectations for it. Throughout that day, NPHC 08 rapidly weakened, and by the next advisory, it was no longer strong enough to even be classified as an Oregonian depression. The JXCA set its chances of naming to zero, and it was swallowed by another oncoming system at 12:00 UTC on May 7.
NPHC 09[]
Around June 28, a large cyclone began to develop south of Alaska. This slow-moving system was only around Oregonian depression status, with winds of 37 mph. On June 29, at the next JXCA advisory, the system was named NPHC 09. NPHC 09 was forecast to stay nearly stationary, while having a 10% chance of bringing clouds to Oregon. However, that forecast was proven wrong as the system rapidly deteriorated the next day. By the next JXCA advisory, NPHC 09 was only at 28 mph winds, not even strong enough to be on the scale. The structure was almost completely unrecognizable from what it was the previous day. Its chances of naming were dropped to zero, and the system officially dissipated on June 30.
NPHC 10[]
Early on August 18, a cyclone began brewing off the Oregonian coast, already bringing overcast weather to the Oregon coast. Throughout the day, the system began tightening up, subsequently bringing sunny weather back to the coast. At 00:00 UTC on August 19, the JXCA noticed the system, and began running advisories on the system, naming it NPHC 10. It was the first cyclone in nearly two months. NPHC 10 was forecast to skim the Oregon coast and was given a 30% chance of naming in 24 hours. It was a very weak cyclone; barely reaching Oregonian depression strength, even if it looked very impressive. The system continued to stall throughout the next day, as well as weakening. By the next advisory, it wasn't even strong enough to be classified as an Oregonian depression, with winds of 33 mph. This weakening trend continued throughout the day, and at the next advisory, the JXCA dropped its naming chances to zero due to it only having winds of 20 mph, even though it still looked cyclonic. It officially dissipated on August 21.
NPHC 11[]
On August 20, a weak cyclone organized south of NPHC 10. It was named NPHC 11 at the next advisory. NPHC 11 had winds of just 28 mph and a pressure of 1015 mbar, making it the weakest designated cyclone since tracking began earlier that year. Although it was forecast to hit Oregon, NPHC 11 stalled in place throughout the day, all the while weakening and losing its cyclonic characteristics. It officially dissipated only 24 hours after it formed on August 21.
NPHC 12[]
Early on October 23, a cyclone began forming north of Hawaii. The system developed overnight, becoming a strong cyclone. At the next JXCA advisory at 00:00 UTC on October 24, the JXCA identified winds of 65 mph in the system, as well as a pressure of 994 mbar, naming it NPHC 12. This made the storm the strongest known designated NPHC. It was given a 50% chance of being named within 48 hours. However, the cyclone weakened overnight, and its structure began to fall apart as it started to race northeastward. By the next day, the winds had dropped to 47 mph, equivalent to a drop from a Category 4 extreme storm to a Category 1 severe storm. The system remained somewhat cyclonic through the next night, but began to lose its structure as it was being absorbed by NPHC 13, which would soon become Noah. Around 00:00 UTC on October 26, NPHC 12 finally reached Oregon, only to dissipate before it could be named. Its remnants were later absorbed by Noah.
Storm names[]
The following list of names will be used for named storms that form in the Oregonian area of responsibility in 2024. This is the very first list developed by the JXCA to be used in this region.
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Retirement[]
On August 7, 2025, the JXCA retired the names Charlotte, Noah, Olivia, Quinn, and Rowan from its rotating naming lists due to the damage they caused in the Pacific Northwest and British Columbia. They were replaced with Chloe, Nathan, Olive, Quinta, and Roman for the 2027 season.