####018012557#### ACUS45 KWBC 131452 SCCNS5 Storm Summary Number 5 for Major Pacific Coast to High Plains Storm System NWS Weather Prediction Center College Park MD 700 AM PST Tue Dec 13 2022 ...Winter storm tracking across the Northern Plains and Midwest today with a wide variety of winter weather impacts... Winter Storm Warnings are in effect over portions of the Intermountain West, High Plains, Northern Plains, and Upper Midwest. Blizzard Warnings are in effect for portions of the Northern High Plains and Intermountain West. Ice Storm Warnings are in effect for portions of the Northern Plains. High Wind Warnings are in effect for portions of the west-central Plains and northern New Mexico. Winter Storm Watches are in effect for portions of the Upper Midwest and portions of the Appalachian Mountains. Winter Weather Advisories are in effect for portions of the Intermountain West, Rockies, Northern Plains, and Upper Midwest. Wind Advisories are in effect for Iowa and southern Minnesota and Iowa. For a detailed graphical depiction of the latest watches, warnings and advisories, please see www.weather.gov At 600 AM PST...A potent storm system that tracked eastward across the Intermountain West has made it Lee of the Rockies, with a central pressure of 990 mb (29.23 in Hg) over northwestern Kansas. An occluded boundary extends southward from the low across southern Colorado, before connecting to a cold front over central Oklahoma, which was analyzed stretching southward into portions of Texas. Meanwhile, a frigid arctic airmass continues to surge south over the Northern Plains and Intermountain West, with a southward advancing cold front being analyzed to the west of the main low, ushering in temperatures 10-20 degrees below average behind the front. Current surface observations and RADAR depict scattered areas of moderate to heavy rain, freezing rain, and elevation snow over the Intermountain West and northern Plains associated with the storm system, with convective weather toward the South. ...Selected preliminary Storm Total Snowfall in inches from 700 AM PST Tue Dec 11 through 600 AM PST Mon Dec 13... ...ARIZONA... MORMON LAKE 10.0 FOREST LAKES 9.0 GREER 6 WSW 8.0 NWS FLAGSTAFF 5.6 PRESCOTT 3.0 ...COLORADO... DOUGLAS PASS 13.0 SILVERTON .3 WSW 3.5 DURANGO 1 SSW 3.0 ...IDAHO... KETCHUM 1 SSE 36.0 BELLEVUE 18.8 SUN VALLEY 2 SW 17.0 FEATHERVILLE 14.0 BOISE 16 NNE 13.0 DOVER 2 WNW 10.2 ...MONTANA... GREAT FALLS 2 WNW 4.0 DIXON 3.0 MISSOULA 4.4 W 3.0 ...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 ...NEW MEXICO... MOGOLLON 6 ESE 5.0 PAJARITO MOUNTAIN 1 NNE 4.0 EDGEWOOD 6.1 NW 3.3 ...UTAH... ALTA 17.0 POWDER MOUNTAIN 13.0 LOGAN 11.0 ...WYOMING... TETON VILLAGE 3 WNW 6.0 JACKSON 5.3 NW 4.0 ...Selected preliminary Storm Total Freezing Rain ice amounts in inches from 700 AM PST Tue Dec 11 through 600 AM PST Mon Dec 13... ...IOWA... SANBORN 0.25 BUENA VISTA 0.20 HULL 0.13 ...SOUTH DAKOTA... SIOUX FALLS 3 ESE 0.25 MADISON LAKE 0.13 BROOKINGS 1 S 0.10 LENNOX 0.10 ROWENA 4 WNW 0.10 ...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 ...NEW MEXICO... BINGHAM 10 S 67 VAUGHN 11 SE 66 BOSQUE DEL APACHE 21 SE 64 CLINES CORNERS 1 S 59 ...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 ...Selected preliminary Storm Total Snowfall in inches where the event has ended... ...CALIFORNIA... SIERRA AT TAHOE 70.0 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 ...OREGON... REDMOND 8 ESE 10.5 MT. ASHLAND SKI ROAD 8.0 BEND 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 where the event has ended... ...CALIFORNIA... LOS GATOS 7.01 INTERLAKEN 4.4 NE 6.63 HONEYDEW 2 SSE 5.39 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 SOUTH PASADENA 0.9 SSW 1.92 ...OREGON... GOLD BEACH 3.00 SELMA 2.33 Heavy snowfall is expected to gradually dissipate across the Intermountain West and shift northward toward the High Plains into tonight. However, the most widespread and substantial impacts will occur as the system ejects into the Central Plains today along with a developing low-pressure center tracking eastward. This will result in heavy snow and blizzard conditions across portions of the Central and Northern High Plains as well as heavy freezing rain in the Upper Midwest 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. Up to 0.25" of ice, with potentially higher localized amounts, is expected to accrue across the Midwest today and into tonight, especially in southern Minnesota and western Wisconsin. Travel is currently hazardous or impossible across the Intermountain West and High Plains, where there have already been several reported accidents associated with the winter weather. On a longer-term scale, this storm system is forecast to spread toward the East Coast as the low pressure continues to occlude, bringing potential winter impacts to the northern Mid-Atlantic and Northeast. Moderate freezing rain is currently forecast over portions of the Mid-Atlantic, particularly in an axis extending from northern Virginia and Maryland northward across western Pennsylvania toward Lake Erie on Thursday morning. Toward the north, the air will be cold enough to support another snowtorm across portions of New England. Travel across these areas may become dangerous or impassible. Be sure to refer to WPC to access the latest forecasts and learn about potential impacts to your area. 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. Asherman/Genz $$