Winter Weather, P Sw San Bernardino
- When
- December 20, 5:00 PM PST to December 21, 1:39 PM PST
- Where
- P Sw San Bernardino forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 34.841, -116.178 (the zone’s center; the record gives no point)
Winter Weather in California, December 20 to 21, 2001
Three to eight inches of snow fell above 4000 feet elevation. Visibility was less than 100 feet at times in fog.
Where it happened
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.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 4
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.
What happened
The episode as NWS SGX wrote it up.
Three to eight inches of snow fell above 4000 feet elevation. Visibility was less than 100 feet at times in fog. Winds were gusting over 25 mph. At the lower elevations brief heavy rain and hail fell, causing minor street flooding.
The radar
The national radar mosaic for the moment the first event began.
Event by event
4 winter weather. Local standard time, as filed.
Winter Weather, P W Riverside
- When
- December 21, 1:00 AM PST to 2:00 PM PST
- Where
- P W Riverside forecast zone
- Reported by
- DEPT OF HIGHWAYS
- Coordinates
- 33.744, -115.994 (the zone’s center; the record gives no point)
Winter Weather, X W San Diego Valley
- When
- December 21, 3:00 AM PST to 6:30 AM PST
- Where
- X W San Diego Valley forecast zone
- Reported by
- TRAINED SPOTTER
- Coordinates
- 33.028, -116.770 (the zone’s center; the record gives no point)
Winter Weather, San Diego T X W
- When
- December 21, 5:00 AM PST to 1:15 PM PST
- Where
- San Diego T X W forecast zone
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 33.028, -116.770 (the zone’s center; the record gives no point)
What these are
- Winter Weather
- Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornado and Hail in California, December 20, 2001
- Heavy Snow in California, December 20, 2001
- Heavy Snow in Maine, December 20 to 21, 2001
- Strong Wind in West Virginia, December 20, 2001
- Winter Storm and High Wind in Alaska, December 20 to 21, 2001
- Heavy Snow and High Wind in Alaska, December 20, 2001
- Blizzard and High Wind in Alaska, December 20 to 21, 2001
- Winter Storm in Maine, December 20 to 21, 2001
- Heavy Snow in Pennsylvania, December 20 to 21, 2001
- High Wind in Alaska, December 20, 2001
- High Wind in Virginia, December 20, 2001
- Strong Wind in Virginia, December 20, 2001
More
Every storm in California in 2001Every state in 2001This day in weather historyWarnings in California, December 2001
Sources
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: 5274842, 5274843, 5274845, 5274844.