Two closed upper low pressure systems produced widespread precipitation, high-elevation snow and lightning from March 3 to 6. The first system occurred on March 3, producing strong winds across the mountains and deserts, scattered thunderstorms, and light snow in the mountains. The second, colder system, occurred March 5 and 6, and produced heavier snow in the San Bernardino and San Diego County Mountains.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 05-MAR-22 16:00:00 to 05-MAR-22 16:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Department of Highways reported 2 inches of snow. Multiple reports of cars stuck in snow on Route 330. Chain control in effect.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 03-MAR-22 08:30:00 to 06-MAR-22 08:30:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Bear Mountain Snow Summit reported 15 inches of snow at 7000 feet. 72 hour snow total.

Heavy Rain in SAN DIEGO, CALIFORNIA
From 04-MAR-22 07:50:00 to 04-MAR-22 07:50:00 (PST-8)
Location: MT HELIX
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported rainfall of 0.68 inch 2 WSW El Cajon. Rain started at 1:50 AM.

Heavy Rain in SAN DIEGO, CALIFORNIA
From 04-MAR-22 08:56:00 to 04-MAR-22 08:56:00 (PST-8)
Location: (CRQ)PALOMAR ARPT CA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS employee reported 1.20 inch of rain via Davis Pro Weather Station. About 10 lightning strikes from 2 to 3 AM.

Strong Wind in SAN DIEGO COUNTY DESERTS, CALIFORNIA
From 03-MAR-22 20:15:00 to 03-MAR-22 20:15:00 (PST-8)
Magnitude: 43.00 MG
Property damage: 0.00K
Crop damage: 0.10K
Reported by: Trained Spotter

Trained spotter reported a peak wind gust of 49 mph.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 05-MAR-22 16:00:00 to 05-MAR-22 16:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Department of Highways reported 4 inches of snow. Multiple reports of cars stuck in snow on Route 330. Chain control in effect.

Heavy Snow in SAN DIEGO COUNTY MOUNTAINS, CALIFORNIA
From 05-MAR-22 17:29:00 to 05-MAR-22 17:29:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Department of Highways reported 1 inch of snow. Black ice was reported on I-8 at Williams Road. A car lost control, skid off the road and went down the embankment around 4,100 feet. A separate solo vehicle spinout occurred at 6:55 PM.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 05-MAR-22 17:45:00 to 05-MAR-22 17:45:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Snow and ice covered roads contributed to a multi-car pileup on Kuffel Canyon Road at Wabash Drive. Cars kept sliding down the hill into the pileup.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 03-MAR-22 09:00:00 to 06-MAR-22 09:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Snowfall of 10 to 12 inches measured at Snow Valley Resort. 72 hour total.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 03-MAR-22 09:00:00 to 06-MAR-22 09:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Snow accumulation of 4 inches measured in Twin Peaks at 5700 feet. 72 hour snow total.

Heavy Snow in SAN DIEGO COUNTY MOUNTAINS, CALIFORNIA
From 05-MAR-22 23:00:00 to 05-MAR-22 23:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Estimated 1 inch of snow accumulation in Julian based on webcams at 4000 feet.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 03-MAR-22 09:00:00 to 06-MAR-22 09:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Snowfall of 6 inches measured in Running Springs at 6200 feet in elevation. 72 hour snow total.

Heavy Snow in APPLE AND LUCERNE VALLEYS, CALIFORNIA
From 05-MAR-22 22:00:00 to 05-MAR-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Snowfall of 1 inch measured in Lucerne Valley at 3500 feet.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 03-MAR-22 09:00:00 to 06-MAR-22 09:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Snowfall of 6 to 9 inches measured in Big Bear City. 72 hour total.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 03-MAR-22 09:00:00 to 06-MAR-22 09:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Snowfall of 4 inches measured in Crestline. 72 hour snow total.

Heavy Snow in SAN DIEGO COUNTY MOUNTAINS, CALIFORNIA
From 04-MAR-22 09:00:00 to 06-MAR-22 09:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Snowfall of 5 inches measured at Palomar Mountain (Birch Hill) at 5600 feet. 72 hour snow total.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 03-MAR-22 09:00:00 to 06-MAR-22 09:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Snowfall of 6 inches measured at Arrowbear at 6200 feet. 72 hour snow total.