A wet system brought periods of heavy rain with flooding. There was 1 to 2 feet of snow accumulated above 6,500 feet, locally higher on some peaks. Heavy rain fell bringing widespread roadway flooding, as well as local mudslides, flash flooding, with evacuations ordered in some areas. Thunderstorms with large hail, strong damaging winds and tornadoes were reported. Strong winds gusting to 55 to 75 mph brought down numerous trees and powerlines across the area, causing widespread and extended power outages.

Hail in TUOLUMNE, CALIFORNIA
From 11-MAR-23 15:00:00 to 11-MAR-23 16:00:00 (PST-8)
Location: BROWNS FLAT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 1 inch hail in Downtown Sonora.

Tornado in TUOLUMNE, CALIFORNIA
From 11-MAR-23 14:52:00 to 11-MAR-23 14:53:00 (PST-8)
Location: CHINESE
Tornado F-scale: EF1
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Numerous hardwood trees snapped or uprooted. A wooden power pole snapped in half.  NWS Storm Survey determined it to be rated EF-1 with 90 mph winds.

Thunderstorm Wind in TUOLUMNE, CALIFORNIA
From 11-MAR-23 13:55:00 to 11-MAR-23 15:55:00 (PST-8)
Location: JAMESTOWN
Magnitude: 53.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tuolumne County Emergency Manager reported several trees and power poles down near the intersection of Martin Lane and Campo Seco Road. The Mount Elizabeth RAWS reported a maximum wind gusts of 61 mph.

Thunderstorm Wind in TUOLUMNE, CALIFORNIA
From 11-MAR-23 13:55:00 to 11-MAR-23 15:55:00 (PST-8)
Location: JAMESTOWN
Magnitude: 53.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tuolumne County OES reported extensive tree damage at Woods Creek Mobile Home Park with 34 trees down.

Flash Flood in CALAVERAS, CALIFORNIA
From 12-MAR-23 11:27:00 to 12-MAR-23 17:27:00 (PST-8)
Location: COPPEROPOLIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Calaveras County Public Works reported the closure of Cooper Cove Drive between Black Creek Drive and Cheyenne Road in Copperopolis due to severe road damage by flooding.

Flood in YOLO, CALIFORNIA
From 10-MAR-23 03:26:00 to 10-MAR-23 06:26:00 (PST-8)
Location: MADISON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The California Highway Patrol reported roadway flooding along southbound Interstate 505 offramp at County Road 19.

Flood in EL DORADO, CALIFORNIA
From 14-MAR-23 04:55:00 to 14-MAR-23 08:00:00 (PST-8)
Location: PLACERVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The California Highway Patrol reported mud, dirt and rock along the southbound lane of State Highway 49 near the SR 193 junction.

Flood in PLACER, CALIFORNIA
From 14-MAR-23 05:36:00 to 14-MAR-23 09:00:00 (PST-8)
Location: BOWMAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The California Highway Patrol reported a mudslide in the roadway between Old Auburn Foresthill Road and Mammoth Bar Road.

Flood in SACRAMENTO, CALIFORNIA
From 14-MAR-23 08:48:00 to 14-MAR-23 13:00:00 (PST-8)
Location: COSUMNE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Kiefer Blvd closed at Highway 16 due to water on the roadway.

Flood in SHASTA, CALIFORNIA
From 14-MAR-23 11:13:00 to 14-MAR-23 14:00:00 (PST-8)
Location: GIRVAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The California Highway Patrol reported a mudslide between China Gulch Drive and Canyon Road.

Flood in STANISLAUS, CALIFORNIA
From 14-MAR-23 15:16:00 to 14-MAR-23 18:00:00 (PST-8)
Location: KNIGHTS FERRY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The California Highway Patrol reported flooding across SR 108 where the roadway dips down.

Flood in TEHAMA, CALIFORNIA
From 14-MAR-23 15:37:00 to 14-MAR-23 18:37:00 (PST-8)
Location: JELLY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The California Highway Patrol reported water across the Interstate 5 on-ramp.

Flood in SHASTA, CALIFORNIA
From 14-MAR-23 17:24:00 to 14-MAR-23 20:30:00 (PST-8)
Location: WHITMORE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The California Highway Patrol reported water rushing across the roadway at Whitmore Road and Cow Creek Road.

Hail in SAN JOAQUIN, CALIFORNIA
From 11-MAR-23 13:01:00 to 11-MAR-23 13:06:00 (PST-8)
Location: ORFORD
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported hail up to quarter size along Highway 26 near Beyer Lane. Photos confirmed this. The Time was estimated by radar.

Flood in PLACER, CALIFORNIA
From 10-MAR-23 00:55:00 to 10-MAR-23 04:00:00 (PST-8)
Location: CISCO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The California Highway patrol reported flooding of Interstate 80 west of the Cisco Road onramp. There were also other various other reports of flooding of on and off ramps along Interstate 80.

Flood in SAN JOAQUIN, CALIFORNIA
From 10-MAR-23 02:22:00 to 10-MAR-23 06:00:00 (PST-8)
Location: CARBONA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The California Highway Patrol reported flooding near the Corral Hollow Rd and West Linne Road near the creek. Water was reported to be over the roadway.

Flood in CALAVERAS, CALIFORNIA
From 10-MAR-23 03:02:00 to 10-MAR-23 07:00:00 (PST-8)
Location: COPPEROPOLIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The California Highway Patrol reported roadway flooding in both lanes of traffic along California Highway 4 at Bonanza Mine Way.

Flash Flood in CALAVERAS, CALIFORNIA
From 11-MAR-23 15:30:00 to 11-MAR-23 21:30:00 (PST-8)
Location: COPPEROPOLIS
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: State Official

Calaveras County Sheriff Dispatch reported significant roadway flooding with two houses flooded in Copperopolis.

Flash Flood in TUOLUMNE, CALIFORNIA
From 11-MAR-23 16:15:00 to 11-MAR-23 21:15:00 (PST-8)
Location: TUOLUMNE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tuolumne County Emergency Manager reported significant roadway flooding in the town of Tuolumne with creeks overflowing their banks.

Flood in SAN JOAQUIN, CALIFORNIA
From 12-MAR-23 10:37:00 to 12-MAR-23 15:37:00 (PST-8)
Location: ORTEGA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

California Highway Patrol in Stockton reported roadway flooding leading to the road closure near Filbert Street Off Ramp and Highway 4.

Flood in TUOLUMNE, CALIFORNIA
From 13-MAR-23 10:17:00 to 13-MAR-23 16:17:00 (PST-8)
Location: SONORA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Caltrans District 10 reported a mudslide on State Route 49 between Fairview Lane and Mill Villa Court in Sonora due to heavy rain.

Flood in SAN JOAQUIN, CALIFORNIA
From 13-MAR-23 13:49:00 to 13-MAR-23 21:49:00 (PST-8)
Location: LATHROP
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Law enforcement reported roadway flooding across all lanes at State Route 120 West and Interstate 5 South.

Flash Flood in TUOLUMNE, CALIFORNIA
From 11-MAR-23 14:30:00 to 11-MAR-23 21:10:00 (PST-8)
Location: SONORA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash flooding was reported in the downtown area of Sonora due to heavy rain from a severe thunderstorm. Tuolumne County OES reported a creek flowing out of banks, and water flowing over Washington Street, impacting approximately 25 to 30 homes, 10 public buildings and 30 businesses.

Flood in PLUMAS, CALIFORNIA
From 13-MAR-23 17:50:00 to 15-MAR-23 17:50:00 (PST-8)
Location: INDIAN FALLS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Caltrans District 2 initiated 24-hour traffic control on State Route 89 between Moccasin and Indian Falls due to heavy rain leading to a slide.

Flood in SACRAMENTO, CALIFORNIA
From 14-MAR-23 07:12:00 to 14-MAR-23 14:12:00 (PST-8)
Location: GLANNVALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported flooding near Twin Cities Road and Hardesty Lane.

Flood in GLENN, CALIFORNIA
From 14-MAR-23 08:03:00 to 15-MAR-23 08:03:00 (PST-8)
Location: ARTOIS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Glenn County OES reported numerous road closures across the county due to flooding, including County Road FF from CR 9 to CR 200, County Road G from CR 9 to CR 200, County Road 25 from CR F to CR H, County Road 67 from CR Z to Butte County.

Flood in SACRAMENTO, CALIFORNIA
From 14-MAR-23 10:28:00 to 14-MAR-23 16:28:00 (PST-8)
Location: CARMICHAEL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding at Winding Way and Walnut Avenue, with the entire lane flooded.

Winter Storm in WEST SLOPE NORTHERN SIERRA NEVADA, CALIFORNIA
From 10-MAR-23 03:30:00 to 15-MAR-23 10:30:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Heavy snow fell over high elevations, impacting travel at Sierra passes, causing chain controls and slow downs. Bear Valley Ski Resort measured 15 inches on the morning of the 10th, with a storm total through the 15th of 30.5 inches. Kirkwood Ski Resort measured 15 inches on the morning of the 10th, with a storm total through the 15th of 29 inches. Sugar Bowl Ski Resort measured 12 inches on the morning of the 10th, with a storm total through the 15th of 29 inches.

Flood in SUTTER, CALIFORNIA
From 14-MAR-23 10:31:00 to 14-MAR-23 16:31:00 (PST-8)
Location: PLEASANT GROVE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast media reported roadway flooding between Fifield Road and Pleasant Grove Road.

Flood in TEHAMA, CALIFORNIA
From 14-MAR-23 10:38:00 to 14-MAR-23 16:38:00 (PST-8)
Location: PROBERTA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding near Flores Avenue.

Flood in BUTTE, CALIFORNIA
From 14-MAR-23 11:20:00 to 14-MAR-23 18:20:00 (PST-8)
Location: CHICO RANCHAERO ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding between River Road and Chico River Road.

Flood in SHASTA, CALIFORNIA
From 14-MAR-23 13:13:00 to 14-MAR-23 19:13:00 (PST-8)
Location: OAK RUN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding near Whitmore Road.

Flood in TEHAMA, CALIFORNIA
From 14-MAR-23 14:15:00 to 14-MAR-23 20:15:00 (PST-8)
Location: RED BLUFF
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding between Antelope Boulevard and Gilmore Road.

Flood in SHASTA, CALIFORNIA
From 14-MAR-23 14:47:00 to 14-MAR-23 23:47:00 (PST-8)
Location: COTTONWOOD
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported water overflowing the roadway and going into houses at Main Street and Trefoil Lane.

Flood in TEHAMA, CALIFORNIA
From 14-MAR-23 15:10:00 to 14-MAR-23 23:10:00 (PST-8)
Location: (RBL)RED BLUFF MUNI
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding at the corner of Live Oak Road and Willard Road west of Red Bluff.

Flood in SHASTA, CALIFORNIA
From 14-MAR-23 15:22:00 to 15-MAR-23 10:22:00 (PST-8)
Location: COTTONWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported substantial flooding across the roadway, leading to the closure of the roadway near Gas Point Road and Park Drive.

Flood in SHASTA, CALIFORNIA
From 14-MAR-23 15:22:00 to 15-MAR-23 10:22:00 (PST-8)
Location: COTTONWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported substantial flooding across the roadway, leading to the closure of the roadway near Gas Point Road and Park Drive.

Flood in SHASTA, CALIFORNIA
From 14-MAR-23 15:22:00 to 15-MAR-23 10:22:00 (PST-8)
Location: COTTONWOOD
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported substantial flooding across the roadway, leading to the closure of the roadway near Gas Point Road and Park Drive.

Flood in SACRAMENTO, CALIFORNIA
From 14-MAR-23 15:00:00 to 14-MAR-23 17:36:00 (PST-8)
Location: DEL PASO HGTS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Sacramento Fire reported a water rescue via rescue boats of two adults and a dog that were trapped inside of a makeshift shelter. No injuries.

Flood in SUTTER, CALIFORNIA
From 14-MAR-23 16:40:00 to 18-MAR-23 16:40:00 (PST-8)
Location: MERIDIAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast media reported mandatory evacuation orders for the commercial trailer park called Loveys Landing due to flooding near the Sacramento River.

Flood in SHASTA, CALIFORNIA
From 14-MAR-23 18:30:00 to 15-MAR-23 06:30:00 (PST-8)
Location: MILLVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported roadway flooding at Dersch Road and Hyrax Road.

Funnel Cloud in TUOLUMNE, CALIFORNIA
From 11-MAR-23 15:00:00 to 11-MAR-23 15:10:00 (PST-8)
Location: JAMESTOWN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tuolumne County Emergency Manager received multiple reports of a funnel cloud, observed along Campo Seco Road in Jamestown.

Funnel Cloud in SAN JOAQUIN, CALIFORNIA
From 13-MAR-23 13:21:00 to 13-MAR-23 13:25:00 (PST-8)
Location: BANTA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

A National Weather Service employee as well as multiple reports on social media confirmed a funnel cloud east of Tracy at 1321 PDT. The time and location was estimated from radar.

Hail in SAN JOAQUIN, CALIFORNIA
From 11-MAR-23 12:42:00 to 11-MAR-23 13:30:00 (PST-8)
Location: STOCKTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported hail with hail stones up to an inch in Stockton. Time was estimated from radar.