A second winter storm impacted Southwestern California. The heaviest rainfall impacted San Luis Obispo and Santa Barbara counties where rainfall totals ranged from 2 to 4 inches across the coast with 5 to 10 inches across the foothills and mountains. For Ventura and Los Angeles counties, rainfall totals ranged between 0.50 and 1.50 inches with local amounts up to 3 inches across the foothills. The heavy rainfall produced numerous reports of flooding across San Luis Obispo and Santa Barbara counties. Also, gusty south to southwest winds were reported across many areas.

Flash Flood in SAN LUIS OBISPO, CALIFORNIA
From 10-MAR-23 08:00:00 to 10-MAR-23 12:00:00 (PST-8)
Location: ATASCADERO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rainfall produced flash flooding near the community of Atascadero in San Luis Obispo county. California Highway Patrol reported mud and rocks across Highway 41.

Flash Flood in SANTA BARBARA, CALIFORNIA
From 10-MAR-23 06:06:00 to 10-MAR-23 09:30:00 (PST-8)
Location: LOS ALAMOS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rainfall produced flash flooding in Santa Barbara county. Highway 135 was closed from Bell Street to the Harris Grade, due to significant mud and water flowing across the roadway.

Flash Flood in SAN LUIS OBISPO, CALIFORNIA
From 10-MAR-23 08:51:00 to 10-MAR-23 12:00:00 (PST-8)
Location: SYCAMORE SPGS
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rainfall produced flash flooding in San Luis Obispo county. California Highway Patrol reported road closures between Avila Beach Drive and San Luis Bay drive, due to flooding.

High Wind in WESTERN ANTELOPE VALLEY FOOTHILLS, CALIFORNIA
From 10-MAR-23 01:55:00 to 10-MAR-23 04:00:00 (PST-8)
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Strong winds impacted the western foothills of the Antelope Valley. The RAWS sensor at Lake Palmdale recorded wind gusts up to 68 MPH.

High Wind in EST SAN GABRIEL MOUNTAINS, CALIFORNIA
From 10-MAR-23 03:40:00 to 10-MAR-23 08:00:00 (PST-8)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Strong winds impacted the eastern range of the San Gabriel Mountains. The sensor at Ford Observatory reported wind gusts up to 60 MPH.

High Wind in SANTA LUCIA MOUNTAINS, CALIFORNIA
From 09-MAR-23 19:30:00 to 10-MAR-23 00:30:00 (PDT-7)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Strong winds impacted the Santa Lucia Mountains in San Luis Obispo county. The sensor at TV Tower reported wind gusts up to 62 MPH.

High Wind in SAN LUIS OBISPO COUNTY INTERIOR VALLEYS, CALIFORNIA
From 10-MAR-23 00:50:00 to 10-MAR-23 02:50:00 (PDT-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Strong winds impacted the interior valleys of San Luis Obispo county. The sensor at Lewis Ranch Road reported wind gusts up to 60 MPH.

High Wind in SAN LUIS OBISPO COUNTY MOUNTAINS, CALIFORNIA
From 10-MAR-23 03:00:00 to 10-MAR-23 06:00:00 (PDT-7)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Strong winds impacted the mountains of San Luis Obispo county. The sensor at Mount Lowe reported wind gusts up to 63 MPH.

High Wind in WESTERN SAN GABRIEL MOUNTAINS INCLUDING THE HIGHWAY 14 CORRIDOR, CALIFORNIA
From 10-MAR-23 03:40:00 to 10-MAR-23 08:00:00 (PST-8)
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Strong winds impacted the western range of the San Gabriel Mountains. Some peak wind gusts from the local mesonet include: Magic Mountain Truck Trail (gust 67 MPH) and N3 Highway.

Flash Flood in SAN LUIS OBISPO, CALIFORNIA
From 10-MAR-23 07:54:00 to 10-MAR-23 13:00:00 (PST-8)
Location: ADELAIDA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported Chimney Rock Road was completely washed out, due to heavy rain and flash flooding.

Flash Flood in SAN LUIS OBISPO, CALIFORNIA
From 10-MAR-23 08:58:00 to 10-MAR-23 13:00:00 (PST-8)
Location: CHOLAME
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported significant flooding in the community of Cambria in San Luis Obispo county. At a gas station, water rose to a depth up to half of the gas pumps.

Flash Flood in SAN LUIS OBISPO, CALIFORNIA
From 10-MAR-23 10:13:00 to 10-MAR-23 14:00:00 (PST-8)
Location: GORMAN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported mud and debris completely blocking York Mountain Road and Shadow Canyon Road.

Flash Flood in SANTA BARBARA, CALIFORNIA
From 10-MAR-23 12:45:00 to 10-MAR-23 16:00:00 (PST-8)
Location: HOPE RANCH
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

California Highway Patrol reported mud and debris blocking the offramp of Highway 154.