Upper Koyukuk Valley storm history
Storm events recorded in Upper Koyukuk Valley, Alaska between 1950 and 2025.
51
Total events
0
Tornadoes
0
Hail
8
Floods
0
Deaths
$666K
Property damage
Most significant events
Strongest tornadoes, deadliest events, and biggest damage in this county. Up to 50 shown.
Flood Flood
Emergency management personnel with the Tanana Chiefs Conference and local officials from Allakaket reported a prolonged moderate to major flood that surrounded most of the lower community, Old Town, and the old runway. Several roads including the airport access road and Main Str…
Heavy Snow Heavy Snow
The Bettles Field SNOTEL reported 8 inches of snow in 24 hours.
Heavy Snow Heavy Snow
Heavy snow fell over the Upper Koyukuk Valley. The Bettles Field SNOTEL (BFLA2) reported 8 inches of new snow in 24 hours.
Flood Flood
Heavy rainfall over the northern Interior caused rapid rises on the Alatna and Kuyokuk Rivers. The water came up 4 to 6 feet in three days on the Alatna River and the Koyukuk was very high with debris and flooding. In Allakaket, water flooding the boat launch, as well as fish cam…
Heavy Snow Heavy Snow
The Bettles Field (BFLA2) SNOTEL reported 0.70 inches of precipitation in 24 hours, using a 10:1 snow ratio, an estimated 7 inches of snow fell in 24 hours. The estimated storm total accumulation was 10 inches through 11/17/2023.
Flood Flood
Water levels on the Koyukuk River at Allakaket rose overbank in low-lying areas of the community near the river on June 10th. Minor flooding was reported when the water crested early Monday morning June 12th. Water inundated the old runway by the river and overtopped Stanley Slou…
Heavy Snow Heavy Snow
The Alaska Department of Transportaion reported 10 inches of snow fell in a 24-hour period at Gobblers Knob.
Winter Storm Winter Storm
Bettles reported multiple hours of heavy and moderate snow with visibilities as low as quarter mile at times.
Heavy Snow Heavy Snow
Storm system brought 8 inches of snow at the Bettles Airport.
Winter Storm Winter Storm
Heavy snow impacted several of the Upper Koyukuk River Valley communities. The weather observer in Bettles reported 13.7 inches of snow between Sunday evening December 5th and Monday afternoon December 6th.
Blizzard Blizzard
Blizzard conditions were observed at the Bettles ASOS. Visibility was reduced to one quarter mile or less at times in snow and blowing snow. There was a peak wind gust of 32 kt (37 mph) at the Bettles ASOS.
Heavy Snow Heavy Snow
Allakaket City Office Personnel estimated 12 inches of snow during the event.
Flood Flood
The Alaska DOT estimated that a three day storm peaked with around 4 inches of rain in 24 hours ending on Aug 3rd in the vicinity of the Jim River between Dalton Highway Mileposts 142 to 145. Water overtopped the Highway at two locations between Jim River #3 and Douglas Cr. Water…
Flood Flood
In the village of Allakaket, several roads were inundated including First and Second Avenue. Water also flowed over the road adjacent to the store. Several outbuildings were flooded and/or moved to higher ground. The local observer estimates water levels would need to rise 2 feet…
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Strong Wind Strong Wind
High Wind High Wind
Peak wind gust 60 mph (52 kt).
High Wind High Wind
Ice Storm Ice Storm
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Flood Flood
Heavy Snow Heavy Snow
Cold/Wind Chill Cold/Wind Chill
Heavy Snow Heavy Snow
Winter Storm Winter Storm
Ice Storm Ice Storm
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Winter Storm Winter Storm
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
Extreme Cold/Wind Chill Extreme Cold/Wind Chill
Winter Weather Winter Weather
A 980 mb low 350 miles south of Saint Lawrence Island on the afternoon of the 4th weakened to 1002 mb near Kodiak Island on the afternoon of the 6th. A moist flow of air from the Bering Sea brought a prolonged period of snowfall to the Bettles area. A total of 6.7 inches of snow …
High Wind High Wind
Flood Flood
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Winter Storm Winter Storm
Heavy Snow Heavy Snow
Blizzard Blizzard
Heavy Snow Heavy Snow
High Wind High Wind
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Winter Weather Winter Weather
Flood Flood
Heavy Snow Heavy Snow
Heavy Snow Heavy Snow
Events by year
| Year | Events | Tornadoes |
|---|---|---|
| 2025 | 2 | 0 |
| 2024 | 2 | 0 |
| 2023 | 4 | 0 |
| 2021 | 2 | 0 |
| 2020 | 2 | 0 |
| 2019 | 2 | 0 |
| 2017 | 1 | 0 |
| 2016 | 1 | 0 |
| 2015 | 2 | 0 |
| 2014 | 1 | 0 |
| 2013 | 5 | 0 |
| 2012 | 1 | 0 |
| 2011 | 2 | 0 |
| 2010 | 1 | 0 |
| 2009 | 5 | 0 |
| 2008 | 2 | 0 |
| 2006 | 2 | 0 |
| 2005 | 2 | 0 |
| 2004 | 5 | 0 |
| 2003 | 6 | 0 |
| 2002 | 1 | 0 |