A Snow Advisory was issued at 2015 PST on 12/21 for California zones CAZ080/082 above 3000 feet. The advisory was upgraded to a Heavy Snow Warning for zone CAZ082 at 0930 on 12/22 in response to the first two reports above.
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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 MFR wrote it up.
A Snow Advisory was issued at 2015 PST on 12/21 for California zones CAZ080/082 above 3000 feet. The advisory was upgraded to a Heavy Snow Warning for zone CAZ082 at 0930 on 12/22 in response to the first two reports above. In addition, a High Wind Warning was issued for CAZ081 at 0626 PST on 12/22. The warnings and advisory were expired at 1400 PST on 12/22. Based on the above reports, a Heavy Snow Warning should have been issued for CAZ080/081/082 along with a Wind Advisory for CAZ081.
The national radar mosaic for the moment the first event began.
3 heavy snow, 1 high wind. Local standard time, as filed.
Mt. Shasta Ski Park reported 10 inches of snow at the bottom and 14 inches on top in the 24 hours ending at 0800 PST.
Spotter SY39 6W Black Butte reported 6 inches snow between 2200 PST on 12/21 and 0800 on 12/22,
Spotter SY84 northeast of Weed at 4100 feet reported 10 inches snow in 10 hours ending at 1000 PST.
Spotter SY84 also recorded a wind gust of 45 mph at 0830 PST on 12/22.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2001Every state in 2001This day in weather historyWarnings in California, December 2001
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 2026-10-01. Each event’s entry at NCEI: 5273885, 5273886, 5274172, 5274173.