Blizzard — Kuskokwim Delta Coast and Nunivak Island, Alaska

2025-04-03 to 2025-04-04 · Kuskokwim Delta Coast and Nunivak Island, Alaska

Event narrative

The Toksook Bay and Chefornak webcams displayed visibility lower than half a mile at 7:30 PM AKDT on April 3rd. Conditions further deteriorated with winds becoming sustained at 30 to 40 mph by 11:00 PM AKDT the same day. Blizzard conditions persisted in these settlements until the evening hours of April 4th.

Wider weather episode

A large north Pacific low moved south of the Eastern Aleutians/Alaska Peninsula Regions on April 3rd. This, combined with a ridge to the west over Shemya, an upper level low in the Central Aleutians, as well as cold air advection from the north allowed for tight pressure gradients. The tighter gradients led to strong, gusty winds that reached storm force strength from the Eastern Aleutians to the Kuskokwim Delta. Heavy snowfall also accompanied this low that, combined with the gusty winds, brought about blizzard conditions in the aforementioned regions.

Source: NOAA Storm Events Database, event_id 1249940. Narrative written by the NWS forecast office that issued the report.