Heavy precipitation occurred across northern portions of the SGX CWA from December 28-30. Widespread precipitation amounts greater than 1 inch occurred across Orange and San Bernardino Counties, with 2 to 3 feet of snow reported in the San Bernardino County Mountains.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 30-DEC-21 12:07:00 to 30-DEC-21 12:07:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

County official reported 14 inches of snow at the end of Baldy Road at 6400 feet. Report of Mt Baldy Road closed at Ice House Canyon with 15 inches of snow reported. 2.3 inches of snow water equivalent.

Dense Fog in APPLE AND LUCERNE VALLEYS, CALIFORNIA
From 31-DEC-21 08:00:00 to 31-DEC-21 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Dense fog with a visibility of 1/8 mile reported 6 SE Lucerne Valley.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 30-DEC-21 00:00:00 to 31-DEC-21 08:29:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Mt Baldy Ski Area in San Bernardino County reported snow of 24 to 36 inches Top of the Notch 7800 to 8300 feet. Most of the snow occurred on December 30. Nearest gauge indicated 4 inches of water equivalent.

High Wind in RIVERSIDE COUNTY MOUNTAINS, CALIFORNIA
From 31-DEC-21 20:33:00 to 31-DEC-21 20:33:00 (PST-8)
Magnitude: 65.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Wind gust of 75 mph reported at Toro Peak.

Flood in ORANGE, CALIFORNIA
From 30-DEC-21 16:01:00 to 30-DEC-21 16:01:00 (PST-8)
Location: SEAL BEACH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Water up over the curbs and onto the sidewalks all over Old Town Seal Beach. 1.58 inch of rain since noon Wednesday.

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 30-DEC-21 17:56:00 to 30-DEC-21 17:56:00 (PST-8)
Location: CRESTLINE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Debris flow reported 1 mile NNE Crestline. The Department of Highways reported boulders in northbound lanes of SR138 / Old Mill Road.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 29-DEC-21 00:00:00 to 30-DEC-21 00:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Department of Highways reported widespread snow amounts of 4 to 9 inches across the San Bernardino Mountains on the evening of December 29. Rime icing was reported for 24 to 30 hours and snow water equivalent of 0.5 to 0.75 inch. Numerous trees and powerlines down at the following locations:
Powerline down in roadway at 21622 Sawpit Canyon Road.
Trees and powerlines reported down on Highway 189 with vehicles trapped near Strawberry Peak.
Downed trees blocking Kuffel Canyon Road in both directions at Highway 18.
Downed tree blocking road on La Casita Drive.
Downed powerline on Sugar Cone Lane.
Downed powerline on Lake Forest Road.
Live wire down on Highway 189 on roadway to Blue Jay. Area was cutoff at Highway 189.
Live wire down on West Victoria Court on vehicle.
Downed tree on Oakmount Lane which took out two powerlines.
Downed powerline on Oak Road. Numerous reports of power outages and downed powerlines.
Downed tree covered in snow on Ocean View Drive and City Creek Road.
Downed powerline on Valley Ridge Drive and Wilderness Road.
Downed tree on Meadow Brook Drive and Meacham Drive.
Downed power pole and lines on Rim of the World Drive at Highway 330.
Downed trees and powerlines in Running Springs.
Tree fell on wires on Nob Hill Drive.
Downed tree on Oak Glen Drive and Wild Oak Drive, so plow was unable to plow road.
Downed powerlines on Walnut Hills Drive and Spyglass Drive, and vehicles are driving on powerlines.
Downed powerline on Pioneer Road.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 30-DEC-21 10:47:00 to 30-DEC-21 10:47:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

County Official reported 10 inches of new in Wrightwood at 5900 feet.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 30-DEC-21 07:35:00 to 30-DEC-21 07:35:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 11.5 inches of snow in Wrightwood at 6275 feet.

Heavy Rain in ORANGE, CALIFORNIA
From 28-DEC-21 00:00:00 to 31-DEC-21 00:00:00 (PST-8)
Location: ANAHEIM
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Widespread rainfall reports of 2 to 5 inches, locally higher across Orange County through the duration of the event.

Heavy Rain in SAN BERNARDINO, CALIFORNIA
From 28-DEC-21 00:00:00 to 31-DEC-21 00:00:00 (PST-8)
Location: (CNO)CHINO ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Widespread rainfall reports of 2 to 5 inches, locally higher across San Bernardino County through the duration of the event.

High Wind in SAN DIEGO COUNTY MOUNTAINS, CALIFORNIA
From 27-DEC-21 19:40:00 to 27-DEC-21 19:40:00 (PST-8)
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wind gust of 73 mph reported at Volcan Mountain.

High Wind in SAN DIEGO COUNTY MOUNTAINS, CALIFORNIA
From 27-DEC-21 19:40:00 to 27-DEC-21 19:40:00 (PST-8)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Wind gust of 63 mph reported at Harrison Peak.

Astronomical Low Tide in SAN GORGONIO PASS NEAR BANNING, CALIFORNIA
From 31-DEC-21 19:50:00 to 31-DEC-21 19:50:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Whitewater RAWS reported a peak wind gust of 68 mph.

High Wind in SAN GORGONIO PASS NEAR BANNING, CALIFORNIA
From 31-DEC-21 20:10:00 to 31-DEC-21 20:10:00 (PST-8)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Whitewater (015SCE) reported a peak wind gust of 64 mph.

High Wind in SAN GORGONIO PASS NEAR BANNING, CALIFORNIA
From 31-DEC-21 20:00:00 to 31-DEC-21 20:00:00 (PST-8)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Whitewater South reported a peak wind gust of 61 mph.