First storm formed | May 24 |
Last storm dissipated | December 21 |
Strongest storm | Joseph - 185 mph, 897 mb |
Total depressions | 21 |
Total storms | 20 |
Hurricanes | 12 |
Major hurricanes | 6 |
Total damages | $49.35 billion (2016 USD) |
Total fatalities | 4,298 |
The 2018 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 (AHC) | |||
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Category 1 hurricane | |||
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Duration | May 24 – June 2 | ||
Peak intensity | 90 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 | |||
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Duration | June 7 – June 11 | ||
Peak intensity | 45 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 | |||
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Duration | June 9 – June 10 | ||
Peak intensity | 35 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 | |||
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Duration | June 18 – June 25 | ||
Peak intensity | 135 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 | |||
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Duration | June 25 – December 5 | ||
Peak intensity | 110 mph (175 km/h) (1-min) 969 mbar (hPa) |
Tropical Storm Erika[]
Tropical storm | |||
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Duration | July 2 – July 9 | ||
Peak intensity | 50 mph (85 km/h) (1-min) 997 mbar (hPa) |
Hurricane Fiona[]
Category 1 hurricane | |||
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Duration | July 4 – July 14 | ||
Peak intensity | 75 mph (120 km/h) (1-min) 973 mbar (hPa) |
Hurricane Gert[]
Category 1 hurricane | |||
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Duration | July 6 – July 10 | ||
Peak intensity | 85 mph (140 km/h) (1-min) 976 mbar (hPa) |
Hurricane Helene[]
Category 4 hurricane | |||
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Duration | July 13 – July 18 | ||
Peak intensity | 150 mph (240 km/h) (1-min) 939 mbar (hPa) |
Tropical Storm Ingrid[]
Tropical storm | |||
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Duration | July 20 – July 26 | ||
Peak intensity | 50 mph (85 km/h) (1-min) 998 mbar (hPa) |
Hurricane Joseph[]
- Main article: Hurricane Joseph
Category 5 hurricane | |||
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Duration | August 3 – August 9 | ||
Peak intensity | 185 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 | |||
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Duration | August 6 – August 12 | ||
Peak intensity | 40 mph (65 km/h) (1-min) 1005 mbar (hPa) |
Tropical Storm Lisa[]
Tropical storm | |||
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Duration | August 12 – August 16 | ||
Peak intensity | 50 mph (85 km/h) (1-min) 1000 mbar (hPa) |
Hurricane Maria[]
Category 3 hurricane | |||
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Duration | August 19 – August 24 | ||
Peak intensity | 120 mph (195 km/h) (1-min) 956 mbar (hPa) |
Tropical Storm Nadine[]
Tropical storm | |||
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Duration | August 28 – September 7 | ||
Peak intensity | 70 mph (110 km/h) (1-min) 989 mbar (hPa) |
Hurricane Olga[]
Category 3 hurricane | |||
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Duration | September 14 – September 27 | ||
Peak intensity | 115 mph (185 km/h) (1-min) 967 mbar (hPa) |
Hurricane Paulette[]
Category 4 hurricane | |||
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Duration | September 26 – October 4 | ||
Peak intensity | 155 mph (250 km/h) (1-min) 934 mbar (hPa) |
Hurricane Rose[]
Category 2 hurricane | |||
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Duration | October 12 – October 21 | ||
Peak intensity | 105 mph (165 km/h) (1-min) 973 mbar (hPa) |
Tropical Storm Shary[]
Tropical storm | |||
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Duration | October 30 – November 5 | ||
Peak intensity | 50 mph (85 km/h) (1-min) 998 mbar (hPa) |
Tropical Storm Tammy[]
Tropical storm | |||
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Duration | November 18 – November 27 | ||
Peak intensity | 45 mph (75 km/h) (1-min) 1004 mbar (hPa) |
Hurricane Valerie[]
Category 4 hurricane | |||
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Duration | December 13 – December 21 | ||
Peak intensity | 145 mph (230 km/h) (1-min) 945 mbar (hPa) |