####018005661#### ACUS42 KWBC 010301 SCCNS2 Storm Summary Number 2 for West Coast to Upper Midwest Storm System NWS Weather Prediction Center College Park MD 700 PM PST Sat Dec 31 2022 ...Persistent onshore flow and anomalous moisture continue to produce moderate to heavy rain at low elevations and snow at high elevations in central California... Winter Weather Advisories and Winter Storm Warnings 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. Winter Storm Watches are in effect for northeastern Colorado through central and northeastern Nebraska, southern and central South Dakota, northwestern Iowa, southern and central Minnesota, and northwestern Wisconsin. Flash Flood and Flood Watches are in effect for much of central California, coastal southern California, inland northern California, and northwestern Nevada. High Wind Warnings are in effect for California's Transverse Ranges, part of southeastern Wyoming, and 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 PM PST...A frontal system was analyzed over central California with a cold front extending to the southwest and a stationary front extending to the east. This system is focusing persistent onshore flow and anomalous moisture over the state of California, resulting in moderate to heavy rainfall and flash flooding at low and middle elevations and snow at high elevations from Sacramento to Los Angeles and eastwards. In addition to precipitation, impressive wind gusts have been reported across California and extreme western Nevada as a result of the tight pressure gradient across the region. ...Selected preliminary Storm Total Rainfall in inches from 400 AM PST Sat Dec 30 through 600 PM 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 Moderate to heavy precipitation will continue to fall across California through Sunday morning with the heaviest axis of precipitation gradually shifting south. Widespread areal average totals of 1-2"+ are possible throughout California with localized 2-6"+ totals on Pacific-facing mountain slopes, especially along the Sierra Nevada Range and Transverse Mountains. Snowfall will remain confined to the high elevations (>8500 ft) with several feet of snow possible along the southern peaks of the Sierra Nevada Range and lesser amounts (1-2 ft) in higher elevations of the Great Basin, Wasatch Mountains, and Tetons. The system will push inland on Sunday and the West Coast will begin to dry out Sunday afternoon and evening. Precipitation will spread into the Southwest and southern and central Rockies on Sunday then into the central and northern Plains on Monday. 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/Russell $$