12 inches of snow in 24 hours reported by a spotter in Portola, CA.
Every event with a place to put it; 1 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 REV wrote it up.
12 inches of snow in 24 hours reported by a spotter in Portola, CA.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Reno, NV wrote its last area forecast discussion before the first event at Feb 10, 9:00 AM PST, 3 hours 15 minutes earlier.
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</html>PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
715 AM PST SAT FEB 10 2001
TIME(PST) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0735 PM GRAYEAGLE CA HEAVY SNOWFALL
02/09/01 PLUMAS 10 INCHES OF SNOW IN 8
HOURS.REPORTED BY SPOTTER
PU11
0545 AM SQUAW VALLEY SKI AREA CA HEAVY SNOWFALL
02/10/01 PLACER 21 INCHES IN 24 HOURS AT
8200 FEET. 17 INCHES AT
6200 FEET.
0640 AM DONNER PASS CA HEAVY SNOWFALL
02/10/01 NEVADA 18 INCHES IN 24 HOURS.
REPORTED BY CALTRANS
0645 AM ECHO SUMMIT CA HEAVY SNOWFALL
02/10/01 EL DORADO 18 INCHES IN 24 HOURS
REPORTED BY CALTRANS
0645 AM MEYERS CA HEAVY SNOWFALL
02/10/01 EL DORADO 10 INCHES IN 24 HOURS
REPORTED BY CALTRANS
0700 AM MAMMOTH LAKES CA HEAVY SNOWFALL
02/10/01 MONO 10-12 INCHES IN 24 HOURS
AT 8200 FEET. 15 INCHES AT
9000 FEET REPORTED BY
SPOTTER MO13.The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
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, February 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 2026-09-24. Each event’s entry at NCEI: 5233204.