####018007716#### ACUS42 KWBC 011511 SCCNS2 Storm Summary Number 3 for West Coast to Upper Midwest Storm System NWS Weather Prediction Center College Park MD 700 AM PST Sun Jan 01 2023 ...Heavy mountain snow and low-elevation rainfall continues across much of southern California and Intermountain West as system moves inland... Winter Storm Warnings and Winter Weather Advisories are in effect from the Sierra Nevada through much of Nevada, Utah, and Wyoming and for parts of southern Idaho, western Colorado, northwestern Nebraska, and the higher elevations of Arizona and New Mexico. High Wind Warnings are in effect for southwestern New Mexico. Wind Advisories are in effect for southern California and Nevada and parts of northwestern and southeastern Arizona. For a detailed graphical depiction of the latest watches, warnings and advisories, please see www.weather.gov At 600 AM PST...A frontal system was analyzed stretching across the Intermountain West, with several centers of low pressure embedded throughout the boundary. The strongest of which being analyzed near Death Valley National Park in California, with a central pressure of 998mb (29.47 mmHg). A cold front extended southward from the low through southern California, while a stationary boundary stretched northeastward through Nevada and into the Intermountain West. Latest RADAR and surface observations indicated that the heaviest axis of preciptation had pushed inland into extreme southwestern California and Arizona, as southeasterly flow ahead of the advancing cold front advected anomalously moist air into the region. Light to moderate precpitation with heavier high-elevation snow was also reported on the backside of the main low-pressure center across the westward facing Sierra Nevada slopes. Elsewhere, snow continued to fall throughout much of the higher elevations of the Intermountain West, particulary across the Wasatch Range, Colorado Rockies, and central Wyoming. In addition to precipitation, impressive wind gusts have been reported across California and the Great Basin as a result of the tight pressure gradient across the region. ...Selected preliminary Storm Total Snowfall in inches from 400 AM PST Sat Dec 30 through 600 AM PST Sun Dec 31... ...CALIFORNIA... SOUTH LAKE 1 NNE 39.0 LONE PINE 11 SW 29.0 ROUND VALLEY 9 WNW 27.0 ...COLORADO... MONARCH PASS 1 NNW 7.0 MILNER 4 NE 6.9 HAHNS PEAK 1 N 6.5 ROCKWOOD 7 NNW 5.0 ...IDAHO... GENEVA 9.0 BERN 8.0 ST. ANTHONY 7.0 HOLBROOK 4 NNE 6.8 ...MONTANA... CARROT BASIN 5.0 CLOVER MEADOW 4.0 LONE MOUNTAIN 4.0 ...UTAH... SUNDANCE 32.0 BRIGHTON 15.0 PARK CITY 14.0 SNOWBASIN 13.0 POWDER MOUNTAIN 11.0 ...WYOMING... COKEVILLE 12 NE 13.0 SOUTH ENTRANCE 5 N 13.0 ALTA 6 ENE 12.0 SMOOT 15 ESE 12.0 TURNERVILLE 16 ENE 12.0 CASPER 22 SE 9.0 ...Selected preliminary Storm Total Rainfall in inches from 400 AM PST Sat Dec 30 through 600 AM PST Sun Dec 31... ...CALIFORNIA... HOMEWOOD 8.67 WHITETHORN 2.4 WSW 8.56 CAMINO 1.2 N 8.52 FRESH POND 8.40 VOLCANO 3.2 N 8.05 SANTA CRUZ 8.9 NW 7.74 PLACERVILLE 0.9 NE 7.52 BLUE CANYON NYACK AIRPORT 7.37 WHITETHORN 1.7 NNW 6.98 HELL HOLE 6.49 BALD MTN LOC 6.33 LAYTONVILLE 9.8 NNW 6.18 AVERY 5.82 SOUTH LAKE TAHOE 4.9 SW 5.68 MOUNT ZION 5.45 SOUTH FORK EEL RIVER AT LEGGETT 5.44 STRAWBERRY VALLEY 5.42 WHITE CLOUD 5.37 MOUNT ELIZABETH 5.17 STEELY FORK 4.87 BEN LOMOND 4.55 PIEDMONT 2 N 4.45 KNEELAND 3.33 ...Selected preliminary Peak Wind gusts in miles per hour earlier in the event... ...CALIFORNIA... PALISADES TAHOE SUMMIT 160 MAMMOTH MOUNTAIN 116 HEAVENLY SKI SUMMIT 1 NNW 99 CONWAY SUMMIT 82 CROWLEY LAKE 6 W 80 JAWBONE 70 BIRD SPRINGS PASS 66 HORSE THIEF SPRINGS 61 MAMMOTH YOSETIME AIRPORT 47 ...NEVADA... HAWTHORNE 6 NW 93 YERINGTON 5 ENE 64 RENO 2 NW 55 ...UTAH... SCIPIO SUMMIT 54 PAROWAN 51 MONUMENT PEAK 49 Precipitation will continue to wind down across California as the system pushes inland, with some light to moderate snow continuing across the southern Sierra Nevada range through the afternoon. Across the Intermountain West, the heaviest snowfall will remain confined to the higher elevations (>6000ft) of the Great Basin, Wasatch Mountains, and Tetons with totals of 1-2+ feet possible. As the system pushes inland on Sunday into Monday, the energy associated with it will begin to consolidate across the Rockies, with low-pressure developing and intensifying before tracking northeast into the central High Plains on Tuesday, producing a large swath of moderate to heavy snow, sleet, and freezing rain. The next Storm Summary will be issued by the Weather Prediction Center at 700 PM PST. Please refer to your local National Weather Service office for additional information on this event. Russell $$