A strong low pressure system slowly moved across central California on December 10 and 11 providing the area with moderate to heavy precipitation. The precipitation fell as snow above 5000 feet with several SNOTEL stations picking up between 18 and 30 inches of estimated new snowfall. The snow level lowered to near 3000 feet by the afternoon of December 11 with some stations in the Sierra Nevada and higher foothills picking up between 3 and 6 inches of new snowfall. Many stations in the Sierra Nevada received between 3 and 5 inches of liquid precipitation while the adjacent foothills picked up between 1.5 and 3 inches of rainfall and much of the San Joaquin Valley and Tehachapi Mountains received between half an inch and an inch of rainfall. The precipitation did change over the snow in the Tehachapi Mountains above 4000 feet, but snowfall amounts were generally light. Rain shadowing effects limited precipitation across the Kern County Deserts with most stations receiving between a tenth of an inch and a quarter inch of rainfall. The precipitation tapered off during the evening of December 11 and ended by midday on December 12.

Debris Flow in MARIPOSA, CALIFORNIA
From 10-DEC-22 19:16:00 to 10-DEC-22 22:16:00 (PST-8)
Location: MIDPINES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a debris flow with boulders on the roadway on SR 140 5NNW Midpines.

Debris Flow in MARIPOSA, CALIFORNIA
From 10-DEC-22 19:29:00 to 10-DEC-22 22:29:00 (PST-8)
Location: JERSEYDALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a tree in the roadway on Jerseydale Rd. 5E Midpines.

Debris Flow in MADERA, CALIFORNIA
From 10-DEC-22 20:17:00 to 10-DEC-22 23:17:00 (PST-8)
Location: OAKHURST
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a mudslide on SR 41 in Oakhurst.

Debris Flow in FRESNO, CALIFORNIA
From 10-DEC-22 20:22:00 to 10-DEC-22 23:22:00 (PST-8)
Location: COALINGA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported falling rocks with regards to a collision 5SW Coalinga on SR 198.

Debris Flow in MARIPOSA, CALIFORNIA
From 10-DEC-22 20:59:00 to 10-DEC-22 23:59:00 (PST-8)
Location: CATHEYS VLY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a large boulder and trees on the roadway near the intersection of Bear Valley Rd. and Hunters Valley Rd.

Debris Flow in FRESNO, CALIFORNIA
From 10-DEC-22 21:14:00 to 11-DEC-22 00:14:00 (PST-8)
Location: LAKESHORE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported a 500 pound boulder on the roadway just east of Huntington Lake.

Heavy Snow in YOSEMITE NP OUTSIDE OF THE VALLEY, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Lower Kibbie Ridge SNOTEL (6479 feet) picked up an estimated 22 inches of new snowfall.

Heavy Snow in UPPER SAN JOAQUIN RIVER, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Kaiser Point SNOTEL (9131 feet) picked up an estimated 18 inches of new snowfall.

Debris Flow in KERN, CALIFORNIA
From 10-DEC-22 20:42:00 to 10-DEC-22 23:42:00 (PST-8)
Location: FRAZIER PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Lifeguard

California Highway Patrol reported a tree in the roadway near Cuddy Valley.

Heavy Snow in YOSEMITE NP OUTSIDE OF THE VALLEY, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Tuolumne Meadows (8600 feet) Park Rangers measured 42 inches of new snowfall.

Heavy Snow in YOSEMITE NP OUTSIDE OF THE VALLEY, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Ostrander Lake SNOTEL (8200 feet) picked up an estimated 26 inches of new snowfall.

Heavy Snow in YOSEMITE NP OUTSIDE OF THE VALLEY, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Tenaya Lake SNOTEL (8150 feet) picked up an estimated 21 inches of new snowfall.

Heavy Snow in YOSEMITE NP OUTSIDE OF THE VALLEY, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Paradise Meadow SNOTEL (7676 feet) picked up an estimated 27 inches of new snowfall.

Heavy Snow in KAISER TO RODGERS RIDGE, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The West Woodchuck Meadow SNOTEL (9209 feet) picked up an estimated 19 inches of new snowfall.

Heavy Snow in KINGS CANYON NP, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Volcanic Knob SNOTEL (10050 feet) picked up an estimated 25 inches of new snowfall.

Flood in MERCED, CALIFORNIA
From 10-DEC-22 19:19:00 to 10-DEC-22 21:19:00 (PST-8)
Location: SNELLING
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding on SR J59 in Snelling.

Flood in FRESNO, CALIFORNIA
From 10-DEC-22 20:06:00 to 10-DEC-22 22:06:00 (PST-8)
Location: CLOVIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Report on MPING of Dry Creek overflowing in Clovis flooding nearby basements.

Flood in MERCED, CALIFORNIA
From 10-DEC-22 20:07:00 to 10-DEC-22 22:07:00 (PST-8)
Location: ATWATER MUNI ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding on northbound SR 99 in Atwater.

Flood in MERCED, CALIFORNIA
From 10-DEC-22 20:21:00 to 10-DEC-22 22:21:00 (PST-8)
Location: FERGUS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding at the intersection of N. Fox and W. Cardella in Atwater.

Flood in MERCED, CALIFORNIA
From 10-DEC-22 20:51:00 to 10-DEC-22 22:51:00 (PST-8)
Location: LIVINGSTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding at the intersection of Westside and Lincoln Boulevards in Livingston.

Flood in FRESNO, CALIFORNIA
From 10-DEC-22 21:04:00 to 10-DEC-22 23:04:00 (PST-8)
Location: PANOCHE JCT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding at the intersection of interstate 5 and Manning Ave 16SW Mendota.

Heavy Snow in UPPER SAN JOAQUIN RIVER, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Devil's Postpile SNOTEL (8004 feet) picked up an estimated 26 inches of new snowfall.

Heavy Snow in UPPER SAN JOAQUIN RIVER, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Green Mountain SNOTEL (7900 feet) picked up an estimated 25 inches of new snowfall.

Heavy Snow in UPPER SAN JOAQUIN RIVER, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Chilkoot Meadow SNOTEL (7150 feet) picked up an estimated 23 inches of new snowfall.

Heavy Snow in UPPER SAN JOAQUIN RIVER, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Poison Ridge SNOTEL (6988 feet) picked up an estimated 19 inches of new snowfall.

Heavy Snow in GRANT GROVE AREA, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Big Meadows SNOTEL (7599 feet) picked up an estimated 23 inches of new snowfall.

Heavy Snow in SEQUOIA NP, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Crabtree Meadow SNOTEL (10700 feet) picked up an estimated 18 inches of new snowfall.

Heavy Snow in UPPER SAN JOAQUIN RIVER, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Graveyard Meadows SNOTEL (6897 feet) picked up an estimated 19 inches of new snowfall.

Heavy Snow in KAISER TO RODGERS RIDGE, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Upper Burnt Corral SNOTEL (9700 feet) picked up an estimated 19 inches of new snowfall.

Heavy Snow in SOUTH END OF THE UPPER SIERRA, CALIFORNIA
From 10-DEC-22 10:00:00 to 11-DEC-22 22:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: SNOTEL

The Wet Meadows SNOTEL (9019 feet) picked up an estimated 23 inches of new snowfall.

Flood in FRESNO, CALIFORNIA
From 10-DEC-22 21:06:00 to 10-DEC-22 23:06:00 (PST-8)
Location: THREE FORKS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding on Interstate 5 just north of the intersection with SR 33 north of Coalinga.

Flood in MERCED, CALIFORNIA
From 10-DEC-22 21:24:00 to 10-DEC-22 23:24:00 (PST-8)
Location: CRESSEY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding near the intersection of Lee and Bradbury Roads.