####018010083#### ACUS42 KWBC 020257 SCCNS2 Storm Summary Number 4 for West Coast to Upper Midwest Storm System NWS Weather Prediction Center College Park MD 700 PM PST Sun Jan 01 2023 ...Heavy precipitation continues in the Intermountain West and is beginning to spread into the Central Plains as the system progresses inland... Winter Storm Warnings and Winter Weather Advisories are in effect for the Sierra Nevada, east central Nevada, much of Utah, Colorado, Wyoming, Nebraska and South Dakota, southern and central Minnesota, northwestern Iowa and Wisconsin, part of southeastern Idaho, 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 parts of southern California, Arizona, and New Mexico and West Texas. For a detailed graphical depiction of the latest watches, warnings and advisories, please see www.weather.gov At 600 PM PST...A frontal system was analyzed stretching across the Intermountain West, with several centers of low pressure embedded along the boundary. Two strong low pressure centers were analyzed in southern Nevada and southern Utah with pressures of 998 mb (29.47 in Hg) and 997 mb (29.44 in Hg), respectively. A cold front extended from southern Nevada through western Arizona while a stationary boundary extended east from southern Nevada through Colorado and into the southern and central Plains. Latest radar and surface observations show moderate to heavy precipitation continuing across the Intermountain West and light precipitation beginning to spread into the central Plains. The heaviest precipitation was focused ahead of the cold front in Arizona and New Mexico where precipitable water values were highest. Precipitation was falling as rain at low elevations and mixed precipitation and snow at mid and high elevations. 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 Fri Dec 30 through 600 PM PST Sun Jan 01... ...ARIZONA... FOREST LAKES 1 E 10.0 BELLEMONT 1 NE 7.9 SUMMERHAVEN 7.0 ...CALIFORNIA... MAMMOTH MOUNTAIN SKI BA 54.0 PALISADES TAHOE SKI BAS 47.0 SOUTH LAKE 1 NNE 39.0 TAHOMA .5 S 33.7 LONE PINE 11 SW 29.0 TRUCKEE 1.6 N 28.0 ROUND VALLEY 9 WNW 27.0 SOUTH LAKE TAHOE 4.9 SW 24.5 ...COLORADO... MOUNT ZIRKEL 4 SE 23.0 CAMERON PASS 9 SE 19.0 CRESTED BUTTE 6.2 N 18.0 GLENDEVEY 8 NW 17.0 STEAMBOAT SPRINGS 1.9 E 16.1 ARAPAHOE PEAK 6 W 15.0 CLARK 7.5 N 13.5 MONARCH PASS 1 NNW 7.0 MILNER 4 NE 6.9 HAHNS PEAK 1 N 6.5 ROCKWOOD 7 NNW 5.0 ...IDAHO... MCCALL 9.3 SSE 27.5 NEW MEADOWS 2.1 NNW 10.8 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 ...NEVADA... DIAMOND PEAK SKI BASE 40.0 MT. ROSE SKI BASE 40.0 GARDNERVILLE 2 SE 30.0 INCLINE VILLAGE 1 NNW 24.0 RENO 9.0 W 11.0 ...UTAH... SUNDANCE 32.0 BRIGHTON 27.0 PARK CITY 24.0 SNOWBASIN 24.0 HEBER CITY 10.1 ESE 20.3 POWDER MOUNTAIN 11.0 ...WYOMING... COKEVILLE 12 NE 13.0 SOUTH ENTRANCE 5 N 13.0 WILSON 2.6 SSW 13.0 ALTA 6 ENE 12.0 MUDDY GAP 1 SSW 12.0 SMOOT 15 ESE 12.0 TURNERVILLE 16 ENE 12.0 CENTENNIAL 1.1 NNE 10.5 ELK MOUNTAIN 10.0 CASPER 22 SE 9.0 ...Selected preliminary Storm Total Rainfall in inches from 400 AM PST Fri Dec 30 through 600 PM PST Sun Jan 01... ...CALIFORNIA... CAMINO 1.2 N 11.68 PLACERVILLE 0.9 NE 11.30 SANTA CRUZ 8.9 NW 10.98 VOLCANO 3.2 N 10.41 HOMEWOOD 8.67 WHITETHORN 2.4 WSW 8.58 MIDPINES 4 ESE 8.44 FRESH POND 8.40 JERSEYDALE 8.03 GOAT MOUNTAIN 7.56 BLUE CANYON NYACK AIRPORT 7.37 MARIPOSA 3.7 NNW 7.23 SNF06 PORTABLE 6.84 CRANE FLAT 6.51 HELL HOLE 6.49 BALD MTN LOC 6.33 SHAVER LAKE RAWS 6.23 LAYTONVILLE 9.8 NNW 6.18 NORTH FORK 6.14 GIANT FOREST 5.97 AVERY 5.82 CHILKOOT MEADOW 5.72 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 RANCHO MURIETA 3.5 N 4.29 ...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 ALPINE MEADOWS 2.9 W 82 CONWAY SUMMIT 82 CROWLEY LAKE 6 W 80 JAWBONE 70 BIRD SPRINGS PASS 66 SACRAMENTO EXEC AIRPORT 64 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 is forecast to continue across the Intermountain West with snowfall mainly confined to the higher elevations (>6000ft). Snowfall totals of 8-12 inches are likely in the highest terrain areas with some locations forecast to receive 1-2+ feet of snow through Monday afternoon. Maximum snowfall totals will be focused across the San Juan Mountains of Colorado, the Unita Mountains of Utah, and portions of central Wyoming. As the system continues to push east through midweek, the energy associated with it will consolidate across the Rockies, with low-pressure developing over the central and southern Plains and intensifying while tracking towards the Upper Midwest. This system is forecast to produce a large swath of moderate to heavy snow, sleet, and freezing rain as it tracks across the central United States. 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. Dolan $$