Winter Weather — Susitna Valley, Alaska

2023-04-11 to 2023-04-12 · Susitna Valley, Alaska

Event narrative

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.

Wider weather episode

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.

Source: NOAA Storm Events Database, event_id 1105281. Narrative written by the NWS forecast office that issued the report.