An atmospheric river moved into the California bight on March 10th, bringing heavy rainfall and mountain snow to Southern California. A closed upper low moved into the region on March 12, bringing a southerly moisture surge, resulting in more heavy rain (especially in the deserts) and mountain snow. Rainfall totals in the deserts were 1 to 2 inches on March 12th and 550 lightning strikes occurred. Flash flooding occurred in the deserts near Canebrake and Borrego Springs. Snowfall occurred above 7000 feet on March 10th and above 6000 feet on March 12th.

Flood in SAN DIEGO, CALIFORNIA
From 10-MAR-20 17:00:00 to 10-MAR-20 19:00:00 (PST-8)
Location: (SEE)SAN DIEGO GILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Between 6pm and 8pm on March 10th, heavy rain in El Cajon and Santee was observed. A vehicle was traveling on I-8 westbound when it crashed into the Forrester Creek canal near First street and Naranca Avenue in El Cajon. As they were trying to escape, one of the passengers got caught in the fast-moving canal (but still within its banks) and was swept miles away. The person was located about 5 miles down Forrester creek near Prospect Avenue in Santee. When pulled from the water, the individual was alive but unconscious, but was later pronounced dead at the hospital.

Debris Flow in RIVERSIDE, CALIFORNIA
From 12-MAR-20 12:00:00 to 12-MAR-20 14:00:00 (PST-8)
Location: LA QUINTA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Lifeguard

Report of a mudslide near mile marker 74 on Highway 74 near Pinyon Pines.

Flood in RIVERSIDE, CALIFORNIA
From 12-MAR-20 13:00:00 to 12-MAR-20 15:00:00 (PST-8)
Location: COACHELLA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reports flooding along I-10 west near Coachella.

Flash Flood in RIVERSIDE, CALIFORNIA
From 12-MAR-20 13:00:00 to 12-MAR-20 15:00:00 (PST-8)
Location: ARLINGTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reports Highway 91 at the Adams Street off ramp completely flooded, with vehicles floating.

Debris Flow in RIVERSIDE, CALIFORNIA
From 12-MAR-20 13:00:00 to 12-MAR-20 15:00:00 (PST-8)
Location: INDIO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reports mud in the road on Dillion Road with cars stuck.

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 12-MAR-20 13:00:00 to 12-MAR-20 15:00:00 (PST-8)
Location: CHAMPAGNE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

HOV lanes on Highway 60, just east of I-15, flooded with approximately 2 ft of water.

Lightning in RIVERSIDE, CALIFORNIA
From 12-MAR-20 14:00:00 to 12-MAR-20 15:00:00 (PST-8)
Location: PALM DESERT
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Riverside County Fire responded to a palm tree on fire next to a home. The tree was struck by lightning.

Flash Flood in SAN BERNARDINO, CALIFORNIA
From 12-MAR-20 14:00:00 to 12-MAR-20 15:00:00 (PST-8)
Location: CROWN JEWELL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Road damage at Lugonia and Tennessee ave with severe erosion.

Flood in RIVERSIDE, CALIFORNIA
From 12-MAR-20 14:00:00 to 12-MAR-20 16:00:00 (PST-8)
Location: CORONA MUNI ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Rescue of 2 adults and a minor from a heavily flooded storm channel near Lincoln Avenue and Rincon Street in Corona. Unknown how they entered channel or if it was overflowing.

Flash Flood in RIVERSIDE, CALIFORNIA
From 12-MAR-20 14:00:00 to 12-MAR-20 17:00:00 (PST-8)
Location: LAKEVIEW
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Roadway completely submerged under approximately 2 feet of water at Hansen Ave and Ramona Expressway.

Flash Flood in RIVERSIDE, CALIFORNIA
From 12-MAR-20 15:00:00 to 12-MAR-20 17:00:00 (PST-8)
Location: GLEN AVON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Water rescue performed on two individuals stuck in their vehicle. 3 to 4 ft of water reported around the vehicle, at the intersection of Pedley rd and Jurupa rd.

Flood in SAN BERNARDINO, CALIFORNIA
From 12-MAR-20 17:00:00 to 12-MAR-20 18:00:00 (PST-8)
Location: APPLE VLY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Between one half and one foot of standing water across the intersection of Tonikan rd and Cholena rd in Apple Valley.

Heavy Snow in SAN BERNARDINO COUNTY MOUNTAINS, CALIFORNIA
From 12-MAR-20 12:00:00 to 13-MAR-20 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Between 7 and 12 inches of snow fell in the San Bernardino Mountains from Thursday afternoon (March 12) through Friday morning (March 13).