Nov 18, 2020
Low pressure formed off the coast of California and tapped into tropical moisture which lead to widespread Valley rain, mountain snow, and eventually even thunderstorm development over interior northern California. Valley rain amounts generally ranged from 0.25 to 1.0 inch of rain while foothill locations received 1.0 to 4.0 inches of rain. High elevation mountain snow was bountiful too with most sites reporting 1 to 2 feet of snow. The next day, behind the main front, widespread showers and thu
Source: NOAA National Weather Service Storm Events Database (event 930952). Narrative written by NWS staff at the time of the event.
This event is one of many recorded floods in Shasta County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.