Debris Flow in Alaska

Events

21

Deaths

12

Injuries

4

Damage

$37 million

• Blizzard and Winter Storm in Alaska, November 20 to 21, 20236 deaths · 1 injured · $2.2 million · 65 kt wind · 11 eventsA hurricane-force 964 mb low lifted out of the North Pacific and into the Gulf of Alaska through the early morning hours of November 20, 2023.
• Flash Flood and Debris Flow in Alaska, August 18 to 19, 20156 deaths · $3.4 million · 52 kt wind · 4 eventsA strong front moved through the Panhandle on the morning of Tuesday August 18th. This system had abundant amount of moisture associated with the cold front as the system originated from the North Pacific and was able to tap into tropical moisture.
• Debris Flows and Flooding in Alaska, December 1 to 5, 20202 deaths · $31 million · 56 kt wind · 17 eventsA large plume of concentrated moisture or Atmospheric River (AR) with an associated low-pressure system moved across the Pacific Ocean and transported tropical moisture from the southwest which impacted Southeast Alaska (SEAK) from December 1st through December 2nd.
• Debris Flows in Alaska, August 25, 20241 death · 3 injured · $4.0 million · 2 eventsA low-pressure system moved out of the North Pacific Ocean into the Gulf of Alaska and quickly intensified into a 995 MB gale-force storm on the Sunday morning of August 25th, 2024.
• Debris Flows and Heavy Rain in Alaska, November 18 to 25, 2005$4.3 million · 8 eventsA week of record rainfall impacted much of Southeast Alaska during this time. A series of strong low pressure systems tracked northeast from the Aleutians and inland near Cape Suckling. The strongest of these lows was 963 MB around 12Z on the 18th.
• Debris Flow in Alaska, October 26, 2020$4.3 million · 1 eventA strong atmospheric river impacted Southeast Alaska on October 26th. This was associated with a southerly jet stream that brought moisture up to Southeast Alaska from the tropics that caused widespread damage across Prince of Wales Island.
• Debris Flow and High Wind in Alaska, February 13, 2006$1.6 million · 123 kt wind · 6 eventsAn intense storm rapidly moved from the north Pacific into the Bering Sea on February 13th.
• Debris Flow in Alaska, October 6, 2019$637,000 · 1 eventOn the night of October 5th through the morning of the 6th, two weather systems merged over the Northeast Gulf of Alaska producing a strong and moist weather front. This front moved through Southeast Alaska causing strong winds and heavy rain.
• Blizzard and Debris Flows in Alaska, November 1 to 2, 2020$235,000 · 55 kt wind · 8 eventsDeep low pressure tracked northward along the outer coast causing impacts across Southeast Alaska beginning Halloween night through November 2nd.
• Debris Flow and Flooding in Alaska, October 1, 2022$175,000 · 3 eventsSoutheast Alaska had been impacted by a number of atmospheric rivers through September to keep streamflow on small and large rivers high.
• Debris Flows and Flooding in Alaska, September 26 to 27, 2022$94,000 · 5 eventsAn atmospheric river moved out of the north Pacific into the Gulf of Alaska September 25th and started to impact the northern half of the Southeast Alaska's panhandle. This event brought in very high amounts of moisture, winds and very warm temps through September 27th.
• Debris Flow in Alaska, April 21, 2007$1,000 · 1 eventA series of north Pacific storms produced heavy rain over Kodiak Island beginning April 20th. Total precipitation of 2.16 inches fell April 20th and 21st.
• Debris Flow in Alaska, September 20, 2025$2,000 · 1 eventA front moved through the region with heavy rain on the evening of the 19th followed by heavy showers through the 20th. The heavy rainfall rates resulted in two landslides along Auke Lake in Juneau.

Debris Flow everywhereEvery kind of event in Alaska

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.