A shortwave trough lifted across California and the Great Basin the 21st into the 23rd. This weather system brought high winds, rain, and snow to the Sierra Nevada and parts of Eastern California.

Heavy Rain in EL DORADO, CALIFORNIA
From 21-NOV-18 19:50:00 to 22-NOV-18 15:53:00 (PST-8)
Location: LAKE TAHOE ARPT
Reported by: ASOS

ASOS Station KTVL, South Lake Tahoe Airport, reported 0.81 inches of heavy rain from 21 November 1950PST to 22 November 1553PST.

Heavy Rain in EL DORADO, CALIFORNIA
From 21-NOV-18 10:00:00 to 22-NOV-18 07:00:00 (PST-8)
Location: POMINS
Reported by: COOP Observer

CO-OP Observer TAAC1, Tahoma, reported 0.87 inches of heavy rain from 21 November 1000PST to 22 November 0700PST.

Heavy Rain in PLUMAS, CALIFORNIA
From 21-NOV-18 08:00:00 to 22-NOV-18 08:00:00 (PST-8)
Location: PORTOLA
Reported by: COOP Observer

CO-OP Observer PRAC1, Portola, reported 0.92 inches of heavy rain in a 24-hour period from 21 November 0800PST to 22 November 0800PST.

Heavy Snow in MONO, CALIFORNIA
From 21-NOV-18 07:00:00 to 23-NOV-18 07:00:00 (PST-8)
Reported by: Public

Mammoth Mountain Ski Resort reported 23 inches of snowfall at an elevation of 11083 feet MSL and 15 inches of snowfall at an elevation of 8900 feet MSL in a 48-hour period from 21 November 0700PST to 23 November 0700PST.

Heavy Snow in MONO, CALIFORNIA
From 21-NOV-18 07:30:00 to 22-NOV-18 07:30:00 (PST-8)
Reported by: Trained Spotter

A trained weather spotter 6 miles west-northwest of Bridgeport reported 11 inches of heavy wet snow in a 24-hour period from 21 November 0730PST to 22 November 0730PST at an elevation of 7369 feet MSL.

Heavy Snow in MONO, CALIFORNIA
From 21-NOV-18 07:00:00 to 22-NOV-18 07:32:00 (PST-8)
Reported by: COOP Observer

CO-OP Observer BDEC1, Bodie, reported 10 inches of snowfall from 21 November 0700PST to 22 November 0732PST at an elevation of 8432 feet MSL.

Heavy Snow in GREATER LAKE TAHOE AREA, CALIFORNIA
From 21-NOV-18 07:00:00 to 23-NOV-18 07:00:00 (PST-8)
Reported by: Public

Squaw Valley Ski Resort reported 18 inches of snowfall in a 48-hour period from 21 November 0700PST to 23 November 0700PST at an elevation of 8000 feet MSL.

Heavy Snow in GREATER LAKE TAHOE AREA, CALIFORNIA
From 21-NOV-18 07:00:00 to 23-NOV-18 07:00:00 (PST-8)
Reported by: Public

Northstar Ski Resort reported 13 inches of snowfall in a 48-hour period from 21 November 0700PST to 23 November 0700PST at an elevation of 8610 feet MSL.

Heavy Snow in GREATER LAKE TAHOE AREA, CALIFORNIA
From 21-NOV-18 07:00:00 to 23-NOV-18 07:00:00 (PST-8)
Reported by: Public

Alpine Meadows Ski Resort reported 19 inches of snowfall in a 48-hour period from 21 November 0700PST to 23 November 0700PST at an elevation of 8000 feet MSL.

High Wind in GREATER LAKE TAHOE AREA, CALIFORNIA
From 23-NOV-18 12:33:00 to 23-NOV-18 12:34:00 (PST-8)
Magnitude: 61.00 MG
Reported by: Mesonet

Mesonet station TADC1, 2 miles northeast of Donner Peak reported a wind gust of 70 mph at an elevation of 7399 feet MSL.

High Wind in GREATER LAKE TAHOE AREA, CALIFORNIA
From 23-NOV-18 12:15:00 to 23-NOV-18 12:16:00 (PST-8)
Magnitude: 93.00 MG
Reported by: Mesonet

Squaw Crest mesonet reported a wind gust of 107 mph with sustained wind speeds between 67-74 mph near the observation time. Mesonet elevation 8700 feet MSL.

High Wind in GREATER LAKE TAHOE AREA, CALIFORNIA
From 23-NOV-18 15:15:00 to 23-NOV-18 15:16:00 (PST-8)
Magnitude: 102.00 MG
Reported by: Mesonet

Ward Mountain Summit mesonet reported a wind gust of 117 mph with sustained wind speeds between 65-86 mph near the observation time. Mesonet elevation 8483 feet MSL.

Heavy Rain in EL DORADO, CALIFORNIA
From 21-NOV-18 19:50:00 to 22-NOV-18 07:00:00 (PST-8)
Location: TAHOE PARADISE
Reported by: CoCoRaHS

CoCoRaHS station CA-ED-20, 2 miles northwest of Meyers, reported 1.01 inches of rainfall from 21 November 1950PST to 22 November 0700PST.

Heavy Rain in SIERRA, CALIFORNIA
From 21-NOV-18 08:00:00 to 22-NOV-18 07:00:00 (PST-8)
Location: SIERRAVILLE
Reported by: CoCoRaHS

CoCoRaHS station CA-SI-2, 1 mile southwest of Sierraville, reported 1.04 inches of rainfall from 21 November 0800PST to 22 November 0700PST.