Strong, even damaging west-southwest winds increased travel hazards especially to high profile trucks but also increased the danger for destructive avalanches across the region. Snow started at all elevations Thursday evening with snow levels rapidly rising Friday morning.  Heavy, wet snow (Sierra Nevada Cement) fell across higher elevation areas as snow levels rose to 7000 feet over the region.  Heavy rainfall increased the possibility of flooding for lower elevation creeks, streams, along with urban drainage issues due to snow berms. Significant rises on mainstem rivers were monitored for flooding. Deep, cold snowpack absorbed most liquid precipitation during this second AR supported storm system.

Flood in PLACER, CALIFORNIA
From 09-MAR-23 06:00:00 to 10-MAR-23 06:24:00 (PST-8)
Location: SORENSENS
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported that Olympic Valley road and Alpine Meadows road were closed for operations due to flooding and lift operations.  Palisades Tahoe at Alpine Meadows.

Flood in EL DORADO, CALIFORNIA
From 09-MAR-23 11:07:00 to 10-MAR-23 11:07:00 (PST-8)
Location: SOUTH LAKE TAHOE ARP
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported the area 2.0 mi SW of South Lake Tahoe is experiencing isolated flooding throughout the city.

Flood in SIERRA, CALIFORNIA
From 09-MAR-23 14:34:00 to 10-MAR-23 14:34:00 (PST-8)
Location: LOYALTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported 4.0 mi ENE of Sattley, CA, of flooding along CA-49 from Sierraville, CA, and Loyalton, CA. Most of the flooding is due to the berms blocking the flow of water off the roadway. It was only 1-3 inches deep in most locations.

Heavy Rain in NEVADA, CALIFORNIA
From 09-MAR-23 07:00:00 to 10-MAR-23 07:00:00 (PST-8)
Location: (TRK)TRUCKEE/TAHOE A
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A COCORAHS (CA-ED-51) located 2.0 mi N of Truckee, CA reported  24 hour rainfall totals of 1.56 inches, and snowfall total of 2.0 inch.

Flood in MONO, CALIFORNIA
From 09-MAR-23 13:30:00 to 10-MAR-23 13:30:00 (PST-8)
Location: TOMS PLACE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Inyo County sheriff reported Lower Rock Creek Road/Old Sherwin Grade Road along lower Rock Creek closed due to flooding. The community of Paradise, CA, was cut-off and had been advised to shelter-in-place.

Flood in MONO, CALIFORNIA
From 09-MAR-23 14:00:00 to 10-MAR-23 14:00:00 (PST-8)
Location: CHALFANT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

CALTRANS reported US-6 in Hamill valley has flooding across the roadway.

High Wind in GREATER LAKE TAHOE AREA, CALIFORNIA
From 10-MAR-23 02:00:00 to 10-MAR-23 05:00:00 (PST-8)
Magnitude: 70.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet stations located at the Northstar Ski Summit, Heavenly Ski Summit, CA, and 1.0 mi ESE  of the Palisades Tahoe Alpine Lodge reported peak winds of 69 mph, 71 mph, and 80 mph, respectively.

High Wind in MONO, CALIFORNIA
From 10-MAR-23 17:35:00 to 10-MAR-23 17:35:00 (PST-8)
Magnitude: 89.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station (MTH01) located 0.9 mi S of Mammoth Mountain Ski resort reported a peak wind of 102 mph.

High Wind in MONO, CALIFORNIA
From 10-MAR-23 08:27:00 to 10-MAR-23 08:27:00 (PST-8)
Magnitude: 67.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station (XMLC1) Mill Canyon located 4.0 mi SSW of Walker, CA, reported a peak wind of 77 mph.

Heavy Snow in GREATER LAKE TAHOE AREA, CALIFORNIA
From 09-MAR-23 07:00:00 to 10-MAR-23 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public located 1.0 SSW of Northstar Ski Base, Bear Valley Ski Resort, and the Palisades Tahoe Ski Base reported 24-hour snowfall totals of 16, 15, and 8.0 inches respectively.

Heavy Snow in MONO, CALIFORNIA
From 09-MAR-23 08:00:00 to 12-MAR-23 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public located at  June Mountain Ski Base reported a 3 day storm total snowfall of 30.0 inches at 8600 feet.

Heavy Snow in MONO, CALIFORNIA
From 09-MAR-23 08:00:00 to 10-MAR-23 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public located at Mammoth Mountain Ski Base,  a trained spotter located 1.0 mi SW of Toms Place, and the public located at June Mountain Ski base reported a 24-hour snowfall totals of 15.0, 10.0 (with 1.7 inches SWE), and 8.0 inches respectively.

Heavy Rain in MONO, CALIFORNIA
From 09-MAR-23 07:00:00 to 10-MAR-23 07:00:00 (PST-8)
Location: LEE VINING
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A COCORAHS, CA-MN-6, located 5.0 mi NNW of Lee Vining, CA reported 24-hour rainfall totals of 1.99 inches.

Heavy Rain in EL DORADO, CALIFORNIA
From 09-MAR-23 07:00:00 to 10-MAR-23 07:00:00 (PST-8)
Location: TAHOMA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A COCORAHS, CA-ED-20, located 2.0 mi NW of Meyers, CA, and CA-ED-9 located at Tahoma, CA, both reported 24-hour rainfall totals of 2.11 inches.

Heavy Snow in GREATER LAKE TAHOE AREA, CALIFORNIA
From 11-MAR-23 07:00:00 to 12-MAR-23 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public located at the Palisades Tahoe Ski Base, 1.0 mi SSW of  Northstar Ski Base, CA, 4.0 mi NW Truckee of Tahoe-Donner Ski Area, CA, and the Heavenly Ski Base, CA, and reported 24-hour snowfall totals of 16, 14, 13, and 11 inches respectively.
Northstar Ski Base, CA, Palisades Tahoe Ski Base, Heavenly Ski Base, CA, and  Tahoe-Donner Ski Area all reported 3-day storm total snowfall totals of  37 (@8600 feet), 31 (@8000 feet), 31 (@8900 feet), and  21 (@6750 feet), inches respectively.

Heavy Rain in PLUMAS, CALIFORNIA
From 09-MAR-23 09:00:00 to 10-MAR-23 09:00:00 (PST-8)
Location: BECKWOURTH ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A COCORAHS, CA-PM-9, located 3.3 mi E of Beckwourth, CA, reported 24-hour rainfall totals of 0.78 inches.

Heavy Snow in MONO, CALIFORNIA
From 11-MAR-23 07:00:00 to 12-MAR-23 07:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A COCORAHS, CA-MN-6, located 5.0 mi NNW of Lee Vining, CA reported a 24-hour snowfall total of  9.2 inches.

Flood in MONO, CALIFORNIA
From 09-MAR-23 07:30:00 to 10-MAR-23 07:30:00 (PST-8)
Location: BRIDGEPORT
Flood cause: Heavy Rain / Snow Melt
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public reported that State Route 182 has been closed from the town of Bridgeport to the Nevada state line in Mono County due to reports of flooding.  There was no estimated time of reopening.