Warm and wet system brought periods of heavy rain with flooding. Snow levels were high, with 1 to 2 feet of snow accumulating above 6,500 feet, locally more on higher peaks. Heavy rain on already saturated areas fell bringing additional roadway flooding, as well as local mudslides. Evacuations were ordered in San Joaquin County due to flooding. Thunderstorms with large hail, strong damaging winds and funnel clouds were reported. Strong winds gusting to 40 to 58 mph brought down trees and powerlines across the area, causing power outages.

Flood in SAN JOAQUIN, CALIFORNIA
From 19-MAR-23 12:00:00 to 31-MAR-23 23:59:00 (PST-8)
Location: LATHROP
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

San Joaquin County Sheriff issued evacuation orders for 2 locations along the San Joaquin River starting on March 19, 2023. Those two locations include Airport Court, Manteca and Haven Acres Marina in Lathrop due to heavy rain and snowmelt. Evacuation orders were lifted on April 11, 2023.

Heavy Snow in MT SHASTA/WESTERN PLUMAS COUNTY, CALIFORNIA
From 19-MAR-23 06:00:00 to 23-MAR-23 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

The National Operational Hydrologic Remote Sensing Center estimated 8 to 30 inches of storm total snow. Lower Lassen Peak reported 13.2 inches of snow over 72 hours.

Hail in GLENN, CALIFORNIA
From 23-MAR-23 16:35:00 to 23-MAR-23 16:50:00 (PST-8)
Location: BAYLISS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported hail, measured at 0.88 inches, associated with a thunderstorm.

Hail in TEHAMA, CALIFORNIA
From 23-MAR-23 16:35:00 to 23-MAR-23 16:50:00 (PST-8)
Location: VINA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported 1 inch hail near Haille Road. The time was estimated by radar.

Thunderstorm Wind in YOLO, CALIFORNIA
From 21-MAR-23 15:40:00 to 21-MAR-23 16:00:00 (PST-8)
Location: WOODLAND
Magnitude: 40.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Strong straight-line winds downed multiple trees and utility poles near downtown Woodland. Sacramento International Airport reported a max gust of 46 mph. Time was estimated by radar.

Heavy Snow in WEST SLOPE NORTHERN SIERRA NEVADA, CALIFORNIA
From 19-MAR-23 06:00:00 to 23-MAR-23 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The UC Berkeley Central Sierra Snow Lab reported storm total amounts of 15.5 inches of snow, Bear Valley Resort reported 17 inches of storm total snow, Dodge Ridge Summit reported 36 inches of storm total snow, Kirkwood reported 20 inches of storm total snow, Sierra-at-Tahoe reported 21 inches of storm total snow, and Sugar Bowl Resort reported 19 inches of storm total snow.

Flood in SHASTA, CALIFORNIA
From 19-MAR-23 19:18:00 to 20-MAR-23 08:30:00 (PST-8)
Location: IGO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported mud across Zogg Mine Road from heavy rain, blocking the entire roadway.

Flood in SHASTA, CALIFORNIA
From 19-MAR-23 20:58:00 to 20-MAR-23 08:58:00 (PST-8)
Location: SILVER THORN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported 3 feet of water along the Interstate 5 southbound onramp at Highway 299.

Flood in YOLO, CALIFORNIA
From 21-MAR-23 18:25:00 to 22-MAR-23 06:25:00 (PST-8)
Location: ZAMORA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported 1 foot of water in the roadway.

Funnel Cloud in SOLANO, CALIFORNIA
From 21-MAR-23 13:45:00 to 21-MAR-23 13:50:00 (PST-8)
Location: CANNON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter SO-47 reported rotation in a funnel cloud near Leisure Town Road and Alamo Drive.