Southerly flow moving into the Susitna Valley with an upper level trough helped support enough upslope enhancement into terrain with the background forcing and lift to generate moderate to heavy snowfall rates across northern parts of the region from the evening of 4/11 to the morning of 4/12. 5 feet were focused along the Parks Highway north of Talkeetna.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS AFC wrote it up.
Southerly flow moving into the Susitna Valley with an upper level trough helped support enough upslope enhancement into terrain with the background forcing and lift to generate moderate to heavy snowfall rates across northern parts of the region from the evening of 4/11 to the morning of 4/12. The highest new snowfall amounts of up to 1.5 feet were focused along the Parks Highway north of Talkeetna.
1 winter weather. Local standard time, as filed.
The Alaska Department of Transportation reported 18 inches of new snowfall that had fallen overnight near milepost 121 of the Parks Highway (northwest of Talkeetna) on the morning of 4/12. A spotter in Amber Lake also reported 10.5 inches of new snowfall during the same time frame.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Alaska in 2023Every state in 2023This day in weather historyWarnings in Alaska, April 2023
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 2026-09-30. Each event’s entry at NCEI: 1105281.