The strongest winter storm of December passed through the region on the final two days of December. This storm initially produced very high snow levels near 9000 feet on 30 December.  Colder air and enhanced forcing, coupled with the final push of extensive moisture worked in unison to rapidly drop snow levels to most valley floors (above 4000 feet) during the morning of New Years Eve. Although this early change-over to snow reduced the flooding risks, it brought widespread winter travel hazards region-wide. Storm total snow totals ranged from 5��� to around 1 foot for lower elevations of western NV/northeast CA with lesser amounts below 4000 feet in west-central Nevada and areas near the Oregon border. Some foothill areas received 1-2 feet plus with Sierra snowfall totals generally ranging from 18-30 inches below 7000 feet. Higher Sierra areas and passes received 3-4 feet plus above 7000 feet. Liquid equivalent totals were impressive with 4-8��� in the Tahoe basin/parts of eastern CA and over 10��� near the Sierra crest. The Reno Airport���s liquid total of 2.26��� on the 31st was the third wettest calendar day on record.

Winter Storm in MINERAL/SOUTHERN LYON, NEVADA
From 30-DEC-22 18:56:00 to 30-DEC-22 18:56:00 (PST-8)
Property damage: 5000.00K
Crop damage: 0.00K
Reported by: Department of Highways

Nevada Department of Transportation (NDOT) reported multiple overturned semi-trailer trucks with multiple injuries due to high winds along US-95 near mile marker 55.

High Wind in MINERAL/SOUTHERN LYON, NEVADA
From 30-DEC-22 18:56:00 to 30-DEC-22 18:56:00 (PST-8)
Magnitude: 81.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station (WLKNV-NDOT) located 6.1 mi NW of Hawthorne, NV reported a peak wind gust of 93 mph.

High Wind in MINERAL/SOUTHERN LYON, NEVADA
From 30-DEC-22 18:47:00 to 30-DEC-22 18:47:00 (PST-8)
Magnitude: 58.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter located 6.0 mi S of Yerington, NV, reported trees toppled over the Yerington area. Estimated wind gust of 67 mph.

High Wind in WESTERN NEVADA BASIN AND RANGE, NEVADA
From 30-DEC-22 18:47:00 to 30-DEC-22 18:47:00 (PST-8)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station (CYVN2) Cherry Valley located 7.0 mi E of Dixie Valley, NV, reported a peak wind gust of 61 mph.

High Wind in MINERAL/SOUTHERN LYON, NEVADA
From 30-DEC-22 16:20:00 to 30-DEC-22 17:55:00 (PST-8)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet station (EW0588) Yerington located 5.0 mi ENE of Yerington, NV, and mesonet station (NV059) Pine Grove Mountain located 11mi SE of Smith Valley, NV, both reported maximum wind gusts to 64 mph.

Heavy Snow in GREATER LAKE TAHOE AREA, NEVADA
From 31-DEC-22 00:00:00 to 31-DEC-22 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The public at the Mount Rose Ski Base and Diamond Peak Ski Base both reported Storm total snowfall of 40 inches during the period from 12/31/22 07:00 LST  through 1/1/23 07:00 LST.

Flood in DOUGLAS, NEVADA
From 31-DEC-22 07:20:00 to 31-DEC-22 07:20:00 (PST-8)
Location: TOPAZ LAKE
Flood cause: Heavy Rain
Property damage: 5000.00K
Crop damage: 0.00K
Reported by: Department of Highways

Heavy rains contributed to flooding and minor rock and mud flow along US-395 near Topaz Lake in Douglas County.

Heavy Snow in GREATER RENO/CARSON CITY/MINDEN AREA, NEVADA
From 31-DEC-22 00:00:00 to 31-DEC-22 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

A CO-OP observer (DAGN2) located at Dagget Pass, NV, as well as the public (via social media) located 2.0 miles SE of Gardnerville, NV, and 10.0 mi E of Gardnerville Ranch reported storm total snowfall of 31, 30, and 25 inches respectively during the period from 12/31/22 09:00 LST through 1/1/23 09:00 LST.

Heavy Rain in CHURCHILL, NEVADA
From 30-DEC-22 22:20:00 to 31-DEC-22 22:20:00 (PST-8)
Location: BANGO
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet Station (EDCVY0) located 9.8 mi NE of Cold Springs, NV, and mesonet station (NBNG) located 3.2 mi NE of Lahontan Reservoir, NV, reported rainfall totals of 1.07 inches and 1.06 inches respectively.

Heavy Rain in DOUGLAS, NEVADA
From 31-DEC-22 20:50:00 to 31-DEC-22 23:30:00 (PST-8)
Location: GENOA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet Station (NCVA) NW Minden located 3.0 mi ESE of of Genoa, NV, and mesonet station (NSPO) located at Spooner Summit, NV, reported rainfall totals of 2.37 inches and 2.19 inches respectively.

Winter Storm in GREATER RENO/CARSON CITY/MINDEN AREA, NEVADA
From 31-DEC-22 00:00:00 to 31-DEC-22 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Utility Company

Sierra power outages region wide with power out for tens of thousands of customers.  Due to heavy wet snow loading on area trees, tree limbs and branches broke across and cut power lines across the region. NV Energy announced that 120,000 customers were impacted by power outages caused by snapped trees.

Heavy Snow in GREATER RENO/CARSON CITY/MINDEN AREA, NEVADA
From 31-DEC-22 00:00:00 to 31-DEC-22 23:59:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Broadcast and social media showed areas where heavy wet snow that fell over many areas below 5000 feet elevation caused many travel impacts and contributed to hazardous travel conditions region-wide. Many cars were stranded in upper foothill neighborhoods due to snow depths of several inches over many of those areas.

High Wind in MINERAL/SOUTHERN LYON, NEVADA
From 30-DEC-22 18:56:00 to 30-DEC-22 18:56:00 (PST-8)
Magnitude: 82.00 MG
Property damage: 5000.00K
Crop damage: 0.00K
Reported by: Department of Highways

Nevada Department of Transportation (NDOT) reported multiple overturned semi-trailer trucks with multiple injuries due to high winds along US-95 near mile marker 55. Mesonet station located at US-95 Walker Lake (WLKNV) reported a max wind gust of 94 mph at 16:01 PST, 12/30/2022.