2025 Atlantic hurricane season (Live Version - Hype/Sassmaster)

The 2025 Atlantic hurricane season is a current annual event in tropical cyclone formation in the North Atlantic Ocean. The season will start June 1st and end November 30th, dates that conventionally delimit tropical cyclone formation in the Atlantic. However, the season started exceptionally early, with the genesis of Subtropical Storm Andrea near Bermuda on April 2. As demonstrated by this atypical formation, tropical cyclone development is possible any time of the year. Andrea would later intensify to a rare April subtropical cyclone with hurricane-force winds, the only occurrence outside of the official bounds of the season and the first in the Atlantic basin since a storm in 1968. A second pre-season subtropical depression formed off the coast of North Carolina at the end of May, the first occurrence of two pre-season tropical cyclones since 2016 and the fourth only known occurrence since 1951. This system would later become Hurricane Barry, one of the most intense hurricanes on record.

Overview
The season began exceptionally early, with the genesis of Subtropical Storm Andrea east of Bermuda in early April. Andrea would later intensify to an exceedingly rare hurricane-force subtropical cyclone as it approached Newfoundland, and is the earliest tropical or subtropical cyclone on record to make landfall on the Canadian Province of Newfoundland. Hurricane Barry formed off the coast of North Carolina at the end of May, and later intensified to one of the most intense hurricanes on record.

Tropical Outlook
000 ABNT20 KSMWCHTMC 242328 TWOAT TROPICAL WEATHER OUTLOOK SASS MASTER WEATHER CENTER CLEVELAND OH 18:00 UTC JUNE 8, 2025

SMWC ISSUING ADVISORIES ON TROPICAL STORM CHANTAL, IN THE CARIBBEAN

PUBLIC ADVISORIES ON THE ABOVE STORMS LISTED BELOW.

ELSEWHERE...TROPICAL CYCLOGENSIS IS NOT EXPECTED IN THE NEXT FIVE DAYS.

...FORMATION CHANCE IN 48 HOURS....HIGH...70 PERCENT... ...FORMATION CHANCE IN 120 HOURS...HIGH...90 PERCENT...

ELSEWHERE...TROPICAL CYCLOGENESIS IS NOT EXPECTED IN THE NEXT FIVE DAYS.

$$

~FORECASTER HYPE NNNN 000 ABNT20 KSMWCHTMC 242328 PBAOT

BULLETIN TROPICAL STORM CHANTAL ADVISORY NUMBER ONE SASS MASTER WEATHER CENTER CLEVELAND OH 01:00 UTC JUNE 8, 2016

...THIRD NAMED STORM OF THE SEASON FORMS...HEAVY RAINS SPREADING ACROSS PUERTO RICO...

FOR A NEWLY-DEVELOPED NAMED STORM SOUTH OF PUERTO RICO...EARLIER TODAY, RECON INVESTIGATIONS HAVE FOUND CLEAR EVIDENCE OF A LOWER-LEVEL CIRCULATION CENTER EMBEDDED WITHIN INVEST 93L PRODUCING SUSTAINED TROPICAL STORM-FORCE WINDS ACROSS MUCH OF THE LEEWARD ISLANDS AND GREATER ANTILLES THROUGHOUT PREVIOUS DAYS. CHANTAL IS EXPECTED TO CONTINUE WEST WITHOUT UNDERGOING MUCH CHANGE IN STRENGTH DUE TO IMPENDING LAND INTERACTION WITH THE GREATER ANTILLES.

SUMMARY OF 01:00 UTC INFORMATION AND DISCUSSION --- LOCATION...............29 MILES SOUTH OF PUERTO RICO MAXIMUM SUSTAINED WINDS...45 KNOTS...50 MPH PRESENT MOVEMENT.......W AT 10 MPH MINIMUM CENTRAL PRESSURE...995 MBAR...29.39 INCHES

WATCHES AND WARNINGS

TROPICAL STORM WARNING FOR...PUERTO RICO...ISLA DE MONA...ISLA DE SAONA...AND AREAS IN THE DOMINICAN REPUBLIC EXTENDING FROM SAN PEDRO....TO....PUNTA CANA TROPICAL STORM WATCH FOR....LES CEYES TO PORT-AU-PRINCE IN WESTERN HAITI TROPICAL STORM WATCH FOR....JACMEL HAITI...EXTENDING EAST TOWARDS...SANTO DOMINGO, DOMINICAN REPUBLIC.

DISCUSSION AND 48-HOUR OUTLOOK -- AS OF 00:00 UTC JUNE 8, THE CENTER OF TROPICAL STORM CHANTAL WAS LOCATED APPROXIMATELY 29-35 MILES SOUTH OF PUERTO RICO. CHANTAL HAS BEEN MOVING DUE WEST FOR THE PAST SEVERAL HOURS, AND THIS MOTION IS EXPECTED TO CONTINUE THROUGHOUT THE NEXT SEVERAL DAYS. ON THE FORECAST TRACK, THE CENTER OF CHANTAL WILL NEAR THE SOUTHEASTERN PART OF THE DOMINICAN REPUBLIC EARLY TOMORROW.

MAXIMUM SUSTAINED WINDS REMAIN NEAR 50 MILES PER HOUR, WITH ESTIMATED GUSTS OF 65 MILES PER HOUR. SOME FLUCTUATIONS IN INTENSITY ARE TO BE EXPECTED OVERNIGHT, BUT CHANTAL IS EXPECTED TO REMAIN AT THIS INTENSITY AS IT NEARS HISPANIOLA TOMORROW.

TROPICAL STORM-FORCE WINDS EXTEND AT LEAST 150 MILES OUT FROM THE CENTER OF CHANTAL. PONCE, IN SOUTHERN PUERTO RICO, IS REPORTING SUSTAINED WINDS OF 47 MILES PER HOUR, WITH A MAXIMUM GUST OF 61 MILES PER HOUR.

THE MINIMUM CENTRAL PRESSURE BASED ON HURRICANE HUNTER AIRCRAFT DATA AND SURFACE OBSERVATIONS IS 995 MILLIBARS.

HAZARDS AFFECTING LAND --

WIND: TROPICAL STORM CONDTIONS ARE CURRENTLY SPREADING ACROSS PUERTO RICO AND PARTS OF THE BRITISH VIRGIN ISLANDS. TROPICAL STORM CONDITIONS COULD BEGIN IN EASTERN HISPANIOLA, PRIMARILY THE DOMINICAN REPUBLIC, EARLY TOMORROW. GUSTS OF HURRICANE STRENGTH ARE POSSIBLE.

EXPECT MINOR DAMAGE TO ROOFS AND TREES. DRIVING CONDITIONS MAYBE INHIBITED IN COMBINATION WITH HEAVY RAIN. PREPARATIONS TO PROTECT LIFE AND PROPERTY IN HISPANIOLA SHOULD BEGIN NOW.

RAINFALL: CHANTAL IS EXPECTED TO PRODUCE TORRENTIAL RAINFALL ACCUMULATIONS OF 3 TO 6 INCHES WITH MAXIMUM AMOUNTS OF 10 INCHES IN PUERTO RICO THROUGHOUT THEO OVERNIGHT HOURS. THE DOMINICAN REPUBLIC MAY SEE UP TO 5 TO 7 INCHES OF RAINFALL TOTAL STARTING TOMORROW MORNING. THIS RAINFALL CAN CAUSE POTENTIALLY DANGEROUS FLOODING AND MUDSLIDES.

NEXT ADVISORY -

NEXT COMPLETE ADVISORY AT 00:00 UTC TOMORROW

$$

~FORECASTER SASSMASTER NNNN

Subtropical Storm Andrea
In late March 2025, both the SMWC and HTMC noted the possibility for development of a non-tropical low into a tropical or subtropical cyclone within five days. On April 1, the low was given a LOW, 20 percent chance of development within forty-eight hours and a LOW, 30 percent chance of development within five days by the SWMC. Meanwhile, the HTMC noted the possibility of a marginal subtropical storm south of Atlantic Canada within five days. At 00:00 UTC April 2, the SMWC issued a special advisory on what then was Subtropical Depression One just east of Bermuda, the first of the season. Situated in a barely favorable environment, One was upgraded to a weak subtropical storm at the subsequent advisory when the HTMC estimated a pocket of tropical storm-force winds of 35 knots (40 miles per hour) near the center of the system. As such, the storm was assigned the name Andrea, respectively. Over the days that followed, Andrea briefly and unexpectedly attained a new peak intensity of 45 knots while southeast of Nova Scotia as its overall organization improved, despite persistent and unfavorable conditions. On April 6, Andrea further intensified to a near hurricane-force intensity as it began to bear down upon Newfoundland due to HTMC satellite estimates of winds of 60 knots. At the subsequent advisory, Andrea continued its trend of rapid intensification and became an extremely rare hurricane-force subtropical cyclone as it accelerated towards Newfoundland; the strongest pre-season tropical or subtropical cyclone on record and the only one to form in the month of April. Andrea continued to intensify up until it began affecting Newfoundland, to which very cold waters of 21 degrees Celsius, shelving and proximity to land began to have detrimental effects on the storm.

Andrea made landfall at approximately 09:30 UTC April 7 as a near hurricane-strength subtropical cyclone, with the center of the cyclone coming ashore the islands of Saint Pierre and Miquelon with maximum sustained winds of 60 knots and gusts of hurricane intensity. Despite very cold northerly flow into the system, the circulation of Andrea remained largely undisrupted and subsequently held together even as the system encountered increasingly adverse environmental and atmospheric conditions. Nearly all of Newfoundland was somehow affected by the cyclone as it tracked northeast across central Newfoundland. Very little weakening ensued as it crossed the nation, possibly due to the phenomenon of the Brown Ocean Effect, which states subtropical and tropical cyclones alike can retain, even gain, strength as they move across any given landmass, which is normally detrimental to tropical cyclogenesis and intensification. Andrea finally succumbed to its hostile environment the following afternoon, as the SMWC issued their final outlook on the system while noting it had become a remnant low just 30 miles north of Newfoundland, as it began accelerating to the northeast.

Andrea is the earliest recorded tropical or subtropical cyclone to make landfall in the month of April, as well as the most intense cyclone to form within the month. It is also the earliest storm to form in the basin since Hurricane Alex of 2016 and the first storm in the month of April since Tropical Storm Ana of 2003. A multitude of watches and warnings were issued in advance of the cyclone. Andrea was originally believed to make landfall in eastern Nova Scotia as a remnant low, but upon the HTMC's notice of a northeasterly shift in track towards a more conducive environment, Hurricane Watches and Warnings were hoisted for much of southern Newfoundland. As Andrea subsequently weakened just prior to landfall, these advisories were discontinued and replaced with Tropical Storm Warnings.

Subtropical Storm Andrea's impacts in Newfoundland were relatively widespread due to its large size and asymmetric structure, which made the eastern quadrant the most intense part of the storm. In Saint Pierre and Miquelon, high winds downed trees and power lines across the islands. Over 300 customers lost power, and in some areas is not expected to be restored until April 12. A station in Lamaline recorded sustained winds of 68 miles per hour, with a peak gust of 81 miles per hour. A house in the same area had its roof ripped off by strong winds, while another house was partially destroyed after a tree reportedly fell on it. Saint Lawrence suffered extensive flooding from strong waves and heightened surf stirred up by a pressure gradient over Great St. Lawrence Harbor, with estimated wave heights of forty feet. In the same area, thirteen homes were inundated by floodwaters, while another five were deemed uninhabitable. Strong waves, in combination of heavy rainfall, produced localized street flooding along Highway 220 that rendered some parts of the roadway impassible and resulted in a temporary closure set to expire by next week. So far, Andrea has caused three fatalities, all direct, and its damages are currently unknown. Preliminary estimates are set for release by the end of the week.

Hurricane Barry
On May 25, the HTMC noted in their Tropical Weather Outlook that a broad area of low pressure moving east was set to move off the coast of North Carolina in subsequent days. With a consensus of model support showing subtropical cyclogenesis off the coast of North Carolina by early June, the SMWC soon followed and noted the potential possibility of the low becoming a subtropical depression or storm by the end of May. As predicted, the SMWC recognized the system as Subtropical Depression Two at 00:00 UTC May 29 due the rapid acquirement of substantial convection, as well as the system gaining organization and presenting a structure resembling that of a subtropical cyclone. Due to this development, the cyclone is regarded as the first appearance of two pre-season cyclones (alongside Andrea) since the 2016 season. Advisories were then initiated on the system as it was steered due east due to the influence of a strong upper-level anticyclone to its north. Two rapidly attained tropical storm-force winds exceeding 55 knots (65 miles per hour) on June 1, and was assigned the name Barry. The subsequent day, Barry underwent explosive intensification - attaining Category 2-force winds in less than twelve hours

Storm Names
This is a list of names assigned to tropical cyclones to form in the Atlantic this year. This is the same list used in the 2019 season. As no names were retired in 2019, all names will be used again this year. Retired names, if any, will be announced by World Meteorological Organization in the spring of 2026. The names not retired from this list will be used again in 2031.

Season Effects
This is a table of all the storms that have formed in the 2025 Atlantic hurricane season. It includes their duration, names, landfall(s), denoted in parentheses, damages, and death totals. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but were still related to that storm. Damage and deaths include totals while the storm was extratropical, a wave, or a low, and all the damage figures are in 2025 USD.