####018006878#### ACUS45 KWBC 132131 SCCNS5 Storm Summary Number 2 for Northwestern U.S. Winter Storm NWS Weather Prediction Center College Park MD 100 PM PST Sat Jan 13 2024 ...Moderate to heavy precipitation associated with a rapidly-moving Pacific low pressure system now overspreading the Pacific Northwest into the Great Basin. Winter Storm Warnings and Winter Weather Advisories are in effect for much of Oregon and southwestern Washington, into northern California and the Sierra Nevada, the northern and central Great Basin, as well as portions of the central Rockies. Ice Storm Warnings are in effect for portions of western Oregon. Flood watches and warnings are in effect for coastal southern Oregon and northern California. For a detailed graphical depiction of the latest watches, warnings and advisories, please see www.weather.gov At 1200 PM PST...A quasi-stationary front demarcating the southern edge of a polar air mass extended across Oregon, the Great Basin, and through the central Rockies as arctic air surges into the Plains. Meanwhile, a low pressure system with an estimated central pressure of 992 mb over the Pacific was quickly moving east toward Oregon. National Weather Service Doppler Radar showed moderate to heavy precipitation ahead of the low pressure system had already overspread northern California, down along the Sierra Nevada, much of the Pacific Northwest, and was expanding into the Great Basin. ...Selected preliminary Storm Total Snowfall in inches from 700 PM PST Thu Jan 11 through 000 PM PST Fri Jan 12... ...CALIFORNIA... MOUNT SHASTA 0.9 NNE 5.0 TRINITY CENTER 7.1 N 4.0 ALTURAS 9.5 E 2.4 ...IDAHO... DEADWOOD RESERVOIR 12 NNE 11.2 FEATHERVILLE 9.0 GRANGEVILLE 0.2 ENE 9.0 GRANGEVILLE 8.0 LEWISTON 1 SE 7.0 BOISE CITY 12.3 ENE 6.0 NEW MEADOWS 2 NNW 6.0 OROFINO 5 NE 6.0 STANLEY 4.6 ALMO 4.0 SODA SPRINGS 3.0 ...MONTANA... BIGFORK 3 ENE 9.5 HERON 3 NW 8.1 COLUMBIA FALLS 7.0 THOMPSON FALLS 1 WSW 5.2 GRANTSDALE 2 ENE 5.1 HELENA 2 W 4.7 NYE 14 W 3.0 BILLINGS 3 NNE 2.0 ...OREGON... ISLAND CITY 4 NNW 13.0 JOSEPH 0.2 SSE 6.3 ALTAMONT 5.5 ELGIN 10 N 5.0 SISTERS 2.0 WNW 5.0 PILOT ROCK 3.0 JOHN DAY 1 NW 2.5 PENDLETON 4.0 SSE 2.1 ...WASHINGTON... STEVENS PASS 15.0 WENATCHEE 1 WSW 11.4 ANATONE 2 S 7.0 WHITE SALMON 18 N 7.0 SEQUIM 2 ESE 6.0 DAYTON 9 NE 4.5 PORT ANGELES 4.0 ...Selected preliminary Storm Total Rainfall in inches from 700 PM PST Thu Jan 11 through 000 PM PST Fri Jan 12... ...CALIFORNIA... WHITETHORN 1.4 NW 4.42 KARUK SOMES BAR 2.2 WNW 3.81 WHITETHORN 1.7 NNW 3.42 FORT DICK 0.2 SSW 2.89 SMITH RIVER 1.1 SSE 2.61 CRESCENT CITY 1.2 N 2.51 ...OREGON... BROOKINGS 3.4 N 5.08 DAYS CREEK 7.7 ESE 2.52 COOS BAY 1 NNW 2.32 ...Selected preliminary Peak Wind gusts in miles per hour earlier in the event... ...IDAHO... MARION 17 WSW 73 MESONET POPLAR 2 WSW 61 JEROME 3 E 60 IDAHOME 2 NW 57 MESONET ALTON 4 SW 56 COLD WATER 2 WSW 56 POCATELLO 7 E 55 ...OREGON... VAN 14 ENE 68 MESONET DIAMOND 10 NE 61 MESONET BURNS 43 As the low pressure system continues to move toward and push onshore into Oregon this evening and tonight, precipitation will become heavier, along with increasingly strong and gusty winds. Heavy rain is forecast to continue through tonight near the coast. Meanwhile, significant icing is expected just inland across portions western Oregon. Farther inland, a swath of accumulating snow is forecast to extend from northern Oregon through southern Idaho, northern Utah and into southern Wyoming and western Colorado, as well as along the Sierra Nevada. The highest snow totals are expected in the Oregon Cascades, Sierra, Wasatch mountains of Utah, and central Rockies in Colorado, where a few feet of snow could accumulate near the highest elevations. In addition to the wintry precipitation, bitterly cold wind chills will continue for areas of the northern interior Pacific Northwest/Great Basin, and there is also the risk of flooding with heavy rain moving into southern Oregon and northern California Pacific Coast. The next Storm Summary will be issued by the Weather Prediction Center at 100 PM PST Sunday. Please refer to your local National Weather Service office for additional information on this event. Kong $$