California, 2001Heavy Snow in California, December 20, 2001
December 20, 2001 · NWS MFR · 6 events in 2 counties and zones
A Winter Storm Warning was issued for California zones CAZ080/082 above 3000 feet at 0620 PST on 12/19 and expired at 2200 PST on 12/19. The above reports, which verified the warning amounts, also indicate that the bulk of the snow fell overnight.
Every event with a place to put it; 6 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
Open the live radar over this ground
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 6
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.
A Winter Storm Warning was issued for California zones CAZ080/082 above 3000 feet at 0620 PST on 12/19 and expired at 2200 PST on 12/19. The above reports, which verified the warning amounts, also indicate that the bulk of the snow fell overnight. The warning should have included zone CAZ081, and was cancelled prematurely.
Heavy Snow, Central Siskiyou County
- When
- December 20, 6:00 AM PST
- Where
- Central Siskiyou County forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.593, -122.540 (the zone’s center; the record gives no point)
Spotter SY94 reported 13 inches of snow between 2100 on 12/19 and 0600 PST on 12/20.
Heavy Snow, Central Siskiyou County
- When
- December 20, 6:44 AM PST
- Where
- Central Siskiyou County forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.593, -122.540 (the zone’s center; the record gives no point)
Spotter SY69 reported 7 inches of snow overnight south of Weed.
Heavy Snow, Central Siskiyou County
- When
- December 20, 6:46 AM PST
- Where
- Central Siskiyou County forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.593, -122.540 (the zone’s center; the record gives no point)
Spotter SY05 2W Weed reported 6 inches of snow overnight.
Heavy Snow, South Central Siskiyou County
- When
- December 20, 8:00 AM PST
- Where
- South Central Siskiyou County forecast zone
- Reported by
- OTHER FEDERAL AGENCY
- Coordinates
- 41.593, -122.540 (the zone’s center; the record gives no point)
A snow measuring device at Sand Flat at 6750 feet maintained by the US Bureau of Reclamation recorded 9 inches of snow between 2100 PST on 12/19 and 0200 PST on 12/20.
Heavy Snow, South Central Siskiyou County
- When
- December 20, 9:00 AM PST
- Where
- South Central Siskiyou County forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.593, -122.540 (the zone’s center; the record gives no point)
Spotter SY62 at 3500 feet reported 6 inches of snow between 2300 PST on 12/19 and 0900 PST on 12/20.
Heavy Snow, South Central Siskiyou County
- When
- December 20, 9:30 AM PST
- Where
- South Central Siskiyou County forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 41.593, -122.540 (the zone’s center; the record gives no point)
Spotter 6W Black Butte reported 12.5 inches of snow in the past 24 hours.
- Heavy Snow
- Snowfall reaching the local warning threshold without the other hazards of a winter storm.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Tornado and Hail in California, December 20, 2001$350,000 · F1 · 4 events
- Heavy Snow in Maine, December 20 to 21, 20015 events
- Winter Weather in California, December 20 to 21, 20014 events
- Strong Wind in West Virginia, December 20, 20013 events
- Winter Storm and High Wind in Alaska, December 20 to 21, 200196 kt wind · 2 events
- Heavy Snow and High Wind in Alaska, December 20, 200163 kt wind · 2 events
- Blizzard and High Wind in Alaska, December 20 to 21, 20012 events
- Winter Storm in Maine, December 20 to 21, 20012 events
- Heavy Snow in Pennsylvania, December 20 to 21, 20012 events
- High Wind in Alaska, December 20, 200190 kt wind · 1 event
- High Wind in Virginia, December 20, 20011 event
- Strong Wind in Virginia, December 20, 20011 event
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: 5273879, 5273880, 5273881, 5273884, 5273882, 5273883.