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The 2010 Alaska hurricane season had 20 named storms, 12 hurricanes and 6 major hurricanes. The most notable of these were Hurricane Joseph, which was the costliest and deadliest Alaskan hurricane ever recorded.

Storms

Hurricane Arlene

Category 3 severe tropical cyclone
Category 1 hurricane (SSHWS)
Temporary cyclone north 
DurationMay 24 – June 2
Peak intensity90 mph (150 km/h) (1-min)  974 mbar (hPa)
An area of disorganized thunderstorms developed a circulation on October 23, 8 days before the start of the season. The tropical depression strengthened rapidly into Tropical Storm Arlene. Hurricane Warnings were then issued along the Gulf of Alaska coast. On October 31, Arlene strengthened into a Category 1 and 6 hours later attained its peak intensity of 90 mph. As it made landfall near Kodiak, Alaska, the hurricane weakened and dissipated on November 2.

Tropical Storm Beryl

Tropical storm (SSHWS)
Temporary cyclone north 
DurationJune 7 – June 11
Peak intensity45 mph (75 km/h) (1-min)  1002 mbar (hPa)

A subtropical storm developed in the Chukchi Sea, a rare area for any subtropical or tropical development. The system gradually moved south and entered the tropical Bering Sea and transitioned into a tropical storm. Initial forecasts said Beryl would become a hurricane, but due to wind shear, peaked at 50 mph. Beryl was later absorbed by a large extratropical cyclone.

Tropical Depression Three

Tropical depression (SSHWS)
Temporary cyclone north 
DurationJune 9 – June 10
Peak intensity35 mph (55 km/h) (1-min)  1007 mbar (hPa)

The remnants of Typhoon Sandy regenerated in the Gulf of Alaska, but due to immediate land interaction, the depression dissipated. The remnants of Tropical Depression Three caused major flooding in the Pacific Northwest. Three people died and the depression caused $320 million in damage.

Hurricane Chantal

Category 4 hurricane (SSHWS)
Temporary cyclone north 
DurationJune 18 – June 25
Peak intensity135 mph (215 km/h) (1-min)  945 mbar (hPa)

A small tropical storm formed in the Bering Sea on November 16, but was unnoticed by the Alaska Hurricane Center until November 18. Rapid strengthening occurred and Chantal became a Category 2 hurricane on November 19, and just hours later, became a Category 3 major hurricane. Later on November 24, Chantal became a Category 4 hurricane and simultaneously attained peak intensity with winds of 135 mph. It made landfall the next day as a Category 3 hurricane on Nuka Island.

Hurricane Dolly

Category 2 hurricane (SSHWS)
Temporary cyclone north 
DurationJune 25 – December 5
Peak intensity110 mph (175 km/h) (1-min)  969 mbar (hPa)

Tropical Storm Erika

Tropical storm (SSHWS)
Temporary cyclone north 
DurationJuly 2 – July 9
Peak intensity50 mph (85 km/h) (1-min)  997 mbar (hPa)

Hurricane Fiona

Category 1 hurricane (SSHWS)
Temporary cyclone north 
DurationJuly 4 – July 14
Peak intensity75 mph (120 km/h) (1-min)  973 mbar (hPa)

Hurricane Gert

Category 1 hurricane (SSHWS)
Temporary cyclone north 
DurationJuly 6 – July 10
Peak intensity85 mph (140 km/h) (1-min)  976 mbar (hPa)

Hurricane Helene

Category 4 hurricane (SSHWS)
Temporary cyclone north 
DurationJuly 13 – July 18
Peak intensity150 mph (240 km/h) (1-min)  939 mbar (hPa)

Tropical Storm Ingrid

Tropical storm (SSHWS)
Temporary cyclone north 
DurationJuly 20 – July 26
Peak intensity50 mph (85 km/h) (1-min)  998 mbar (hPa)

Hurricane Joseph

Main article: Hurricane Joseph
Category 5 hurricane (SSHWS)
Temporary cyclone north 
DurationAugust 3 – August 9
Peak intensity185 mph (295 km/h) (1-min)  897 mbar (hPa)

Hurricane Jose was a destructive Category 5 hurricane. It was the deadliest, costliest and strongest Alaska hurricane ever recorded.

Tropical Storm Kate

Tropical storm (SSHWS)
Temporary cyclone north 
DurationAugust 6 – August 12
Peak intensity40 mph (65 km/h) (1-min)  1005 mbar (hPa)

Tropical Storm Lisa

Tropical storm (SSHWS)
Temporary cyclone north 
DurationAugust 12 – August 16
Peak intensity50 mph (85 km/h) (1-min)  1000 mbar (hPa)

Hurricane Maria

Category 3 hurricane (SSHWS)
Temporary cyclone north 
DurationAugust 19 – August 24
Peak intensity120 mph (195 km/h) (1-min)  956 mbar (hPa)

Tropical Storm Nadine

Tropical storm (SSHWS)
Temporary cyclone north 
DurationAugust 28 – September 7
Peak intensity70 mph (110 km/h) (1-min)  989 mbar (hPa)

Hurricane Olga

Category 3 hurricane (SSHWS)
Temporary cyclone north 
DurationSeptember 14 – September 27
Peak intensity115 mph (185 km/h) (1-min)  967 mbar (hPa)

Hurricane Paulette

Category 4 hurricane (SSHWS)
Temporary cyclone north 
DurationSeptember 26 – October 4
Peak intensity155 mph (250 km/h) (1-min)  934 mbar (hPa)

Hurricane Rose

Category 2 hurricane (SSHWS)
Temporary cyclone north 
DurationOctober 12 – October 21
Peak intensity105 mph (165 km/h) (1-min)  973 mbar (hPa)

Tropical Storm Shary

Tropical storm (SSHWS)
Temporary cyclone north 
DurationOctober 30 – November 5
Peak intensity50 mph (85 km/h) (1-min)  998 mbar (hPa)

Tropical Storm Tammy

Tropical storm (SSHWS)
Temporary cyclone north 
DurationNovember 18 – November 27
Peak intensity45 mph (75 km/h) (1-min)  1004 mbar (hPa)

Hurricane Valerie

Category 4 hurricane (SSHWS)
Temporary cyclone north 
DurationDecember 13 – December 21
Peak intensity145 mph (230 km/h) (1-min)  945 mbar (hPa)

Timeline