####018010369#### ACUS45 KWBC 120302 SCCNS5 Storm Summary Number 2 for Major Pacific Coast to High Plains Storm System NWS Weather Prediction Center College Park MD 700 PM PST Sun Dec 11 2022 ...Heavy precipitation and strong winds continue across the western region, as strong storm system continues to track inland... Blizzard Warnings are in effect for eastern Wyoming and northwestern Nebraska. Winter Storm Warnings are in effect for west-central Oregon, the Sierra Nevada and Transverse Mountain Ranges, the Sawtooth Range of Idaho, western Nevada, central Utah, southwestern Colorado, central Wyoming, and southeastern Montana. High Wind Warnings are in effect for southwestern Utah and central New Mexico. Winter Storm Watches are in effect for southeastern Montana, North Dakota, much of South Dakota, extreme western and central Minnesota, eastern Wyoming, northeastern Colorado, and northernwestern Nebraska. Winter Weather Advisories are in effect for the Cascade Range of Oregon, northern California, northeastern Nevada, much of Arizona, eastern Utah, central Idaho, western Wyoming, western Montana, the Colorado Rockies, and northwestern New Mexico. Wind Advisories are in effect for southern California, extreme southeastern Nevada, western Utah, and central New Mexico. For a detailed graphical depiction of the latest watches, warnings and advisories, please see www.weather.gov At 600 PM PST...A potent storm system was moving through the western portion of the Great Basin, with the main low being analyzed in south-central Idaho with a central pressure of 999mb, or 29.50 inches of mercury. An occluded boundary extended southwestward from the low across northern Utah connecting to the triple point located on the northwestern shore of the Great Salt Lake. From the triple point, a cold front stretched southwestward through western Utah and southern California, while a stationary front extended eastward through northwestern Utah. Current surface observations and RADAR continue to show widespread areas of preciptation across the Pacific Coast and Intermountain West associated with the deep upper-level low that is driving that system tracking across the region. Furthermore, onshore flow on the southern flank of a surface low located off the northern California coast was producing an axis of moderate preciptation across north-central portions of the state, with higher elevation snow being reported across the Northern Coast and Klamath Mountain ranges. Further east, ahead of the advancing storm system, RADAR indicated preciptation falling along a north-south axis extending from southern Idaho through Utah and into western Arizona, with snow being reported in the higher elevations (above 5000ft). Strong wind gusts were also occurring across the region. ...Selected preliminary Storm Total Snowfall in inches from 700 AM PST Tue Dec 11 through 600 PM PST Fri Dec 12... ...CALIFORNIA... SODA SPRINGS 2 ENE 60.0 TWIN BRIDGES 2 ESE 48.0 TAHOE-DONNER 46.0 PALISADES TAHOE SKI BASE 44.0 PINECREST 2 E 39.0 MAMMOTH MOUNTAIN SKI BASE 30.0 ASPENDELL 24.5 MT. SHASTA SKI PARK 21.0 WEED 2 SSW 18.0 CARRVILLE 14 N 10.0 ...IDAHO... SUN VALLEY 2 SW 17.0 FEATHERVILLE 14.0 BOISE 16 NNE 13.0 DOVER 2 WNW 10.2 ...NEVADA... MT. ROSE SKI BASE 48.0 SKY TAVERN 43.0 DIAMOND PEAK SKI BASE 42.0 INCLINE VILLAGE 1 NNW 38.0 ZEPHYR COVE 30.0 VIRGINIA CITY 3 NNW 21.0 RENO 4 SW 12.0 ...OREGON... REDMOND 8 ESE 10.5 MT. ASHLAND SKI ROAD 8.0 BEND 6.0 MADRAS 6.0 LA PINE 5 NNW 5.0 E DIAMOND LAKE SUMMIT 4.0 ...WASHINGTON... FORTY-NINE DEGREES NORTH 22.0 LEAVENWORTH 2 SSW 20.5 TROUT LAKE 1 SSW 17.5 MALOTT 7 WNW 17.0 WAUCONDA 12 S 9.0 FIVE MILE 7 NW 8.8 YAKIMA 2 ENE 5.0 ...Selected preliminary Storm Total Rainfall in inches from 700 AM PST Tue Dec 11 through 600 PM PST Fri Dec 12... ...CALIFORNIA... FIDDLETOWN 3.5 SE 5.10 VOLCANO 3.7 N 4.87 OJAI 5.9 E 4.76 BUCKS LAKE 1 NW 4.44 BOULDER CREEK 3 NW 4.38 EBBETTS PASS 4.30 CITRUS HEIGHTS 3.73 WOODLAND 3.62 ARNOLD 3.48 STRAWBERRY VALLEY 3.48 LA CRESCENTA-MONTROSE 1.2 SW 3.34 DOWNIEVILLE 3.33 PARADISE 1.1 W 2.48 DE SABLA 2.36 VOLCANO 2.16 LEGGETT 2.00 SOUTH PASADENA 0.9 SSW 1.92 NOVATO 5 NNW 1.14 ...OREGON... GOLD BEACH 3.00 SELMA 2.33 ...Selected preliminary Peak Wind gusts in miles per hour earlier in the event... ...CALIFORNIA... HEAVENLY SKI SUMMIT 1 NNW 103 MAMMOTH MOUNTAIN SKI 98 WALKER 4 SSW 93 ANTELOPE LAKE 5 NNW 92 AGUA DULCE 6 NE 89 CRESTLINE 2 NNE 84 BIG PINES 4 NNW 80 SAN LUIS OBISPO 4 NE 80 LYTLE CREEK 7 NNE 77 FT DICK 5 SE 60 KNEELAND 2 ESE 57 HIGHLANDS 1 SW 40 ...MONTANA... BIG SKY 6 WSW 67 EMIGRANT 10.7 W 66 LIVINGSTON 2 WSW 63 LIMA 4 NE 57 ...NEVADA... WASHOE CITY 4 NNW 76 GREAT BASIN NP 3 WSW 75 MT. CHARLESTON 6 NE 75 STEAD 2 WSW 73 SPARKS 3 SSW 66 GARDENVILLE RANCH 3 WSW 65 ...OREGON... PILOT ROCK 9 S 80 TALENT 2 NE 50 ...UTAH... LOFTY LAKE PEAK 81 CENTRAL WASATCH PEAKS 79 REYNOLDS PEAK 75 SIGNAL PEAK 69 CEDAR CITY 62 MONUMENT PEAK 60 Across California, precipitation is forecast to push south as the surface low tracks along the coast before weakening on Monday, with additional rainfall amounts expected to remain below one inch. Localized higher amounts will be possible, especially in the northern portion of the state. Further east, precipitation is expected to continue to fall across the Great Basin and Intermountain West regions over the next 24-36 hours as the potent storm system continues to track eastward, with 1-3 feet of snow forecast to fall in the higher elevations of the region. The system will then eject out into the central Plains on Tuesday, where a developing low-pressure will track eastward, leading to heavy snow and possible blizzard conditions across portions of the central and northern High Plains through Wednesday. A rather broad swath of 12"+ of snow is forecast to fall along an axis extending from southwestern Nebraska northward through South Dakota, North Dakota, and eastern Montana, with localized areas potentially receiving over 2 feet of snow, especially across southern South Dakota. Multiple days of significant impacts to travel and infrastructure is expected due to snow, blowing snow, and freezing rain, with travel becoming impossible at times. The next Storm Summary will be issued by the Weather Prediction Center at 700 AM PST. Please refer to your local National Weather Service office for additional information on this event. Russell $$