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Heavy Rain in Alpine County, California
Heavy Rain December 17, 2023 – December 18, 2023 · Alpine County, California
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Mesonet stations (FDCC1) located 1.7 mi SE of Carson Pass, CA (SNOTEL), and (XXXC1) located 7.7 mi SW of Coleville, CA (SNOTEL) reported 24hr rainfall storm totals of 1.1 inches and 1.0 inches respectively.
The wider storm
A rather warm low pressure system supported by a moderate AR flow (IVT: 400-600 kgm-1s-1) anchored in the eastern Pacific offshore the western US, and initiated a stormy pattern over the region. This system swung multiple short wave troughs into California and Nevada that produced widespread valley rain, higher mountain snow, some periods of freezing rain across northeast California to include lower valley areas of the Basin and Range, and breezy south-southwest winds. As snow levels dropped over a 48 hour period, moderate to heavy higher elevation snowfall increased travel difficulties over higher Sierra passes from northeast California to the Lake Tahoe Basin.
Began near Loope (38.4700, -119.6094).
Source: NOAA Storm Events Database, event 1152449. Narratives are written by the National Weather Service forecast office that issued the report.
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