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Displaying AFOS PIL: SCCNS2 Product Timestamp: 2024-11-22 15:00 UTC
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877 ACUS42 KWBC 221454 SCCNS2 Storm Summary Number 5 for West Coast Atmospheric River and Wind Event NWS Weather Prediction Center College Park MD 700 AM PST Fri Nov 22 2024 ...Heavy rainfall, high winds, and mountain snows associated with a major atmospheric river continue... A Gale Warning is active for the offshore waters of Washington, Oregon, and California and a Storm Warning over Washington. Flood Warnings, Advisories, and Watches are in effect for portions of northern California and southwest Oregon. High Wind Warnings are in effect across portions of northern California and Oregon. Winter Storm Warnings are in effect for parts of the California Cascades and Sierra Nevada. For a detailed graphical depiction of the latest watches, warnings and advisories, please see www.weather.gov At 600 AM PST...A 984 mb surface low was analyzed offshore off the Northwest U.S coast. A cold front is entering the coastlines of Oregon and Washington and a warm front was lifting north across the interior of northern Oregon and Washington State. National Weather Service radar and surface observations show moderate rain streaming across southern Oregon and northern California. Showers were ongoing over the coastal sections of Washington State and some heavier snow is ongoing across eastern Washington, Oregon, and Idaho. Gusty conditions are ongoing as well with wind reports this morning showing 25-35 mph. ...Selected preliminary Storm Total Snowfall in inches from 600 AM PST Tue Nov 19 through 600 AM PST Fri Nov 22... ...CALIFORNIA... SODA SPRINGS 2 NE 20.0 DONNER PEAK 16.0 WEAVERVILLE 10 NE 13.0 LASSEN NATIONAL PARK 3 SE 10.8 ...IDAHO... GALANE BLAINE 20.0 KETCHUM BLAINE 10.0 DEADWOOD RESERVO 9.5 ...OREGON... SISKIYOU SUMMIT 2 WNW 7.0 ...WASHINGTON... TWISP 18.1 MAZAMA 2 S 16.2 SOUTH CLE ELUM 25 SW 14.0 ...Selected preliminary Storm Total Rainfall in inches from 600 AM PST Tue Nov 19 through 600 AM PST Fri Nov 22... ...CALIFORNIA... VENADO 17.40 AUSTIN CREEK 15.88 COOKSIE MOUNTAIN 14.03 SODA CREEK 12.42 CAZADERO 6.9 WNW 12.18 SANTA ROSA 12.14 HONEYDEW 2 SSE 11.95 BRANSCOMB 6.2 N 11.82 EEL RIVER CAMP 11.14 CALISTOGA 2.5 W 11.12 MANCHESTER 10.76 MOUNT SHASTA 10.62 YOUNTVILLE 3.3 SW 10.36 BROOKTRAILS 9.56 KENTFIELD 8.22 SIMS 8.21 FORESTVILLIE 1.4 SW 8.13 WHISKEYTOWN 7.21 REDDING 7.9 NNE 6.57 ALDER SPRINGS 5.98 STONYFORD 5.72 POINT AREA 4.8 ESE 5.21 DE SABLA 4.68 SOMES BAR 3.68 FORT DICK .2 SSW 3.01 ...OREGON... ILLINOIS VALLEY AIRPORT 7.21 QUAIL PRAIRIE LOOKOUT 4.43 ILLINOIS VALLEY 4.26 MERLIN 3.79 BROOKINGS 4.2 ENE 3.27 CEDAR 3.24 O'BRIEN 2 SW 3.24 SOUTH FORK 2.71 JOSEPHINE 2.42 CANNIBAL MOUNTAIN 2.28 YREKA 1 WNW 1.89 ...Selected preliminary Peak Wind gusts in miles per hour earlier in the event... ...CALIFORNIA... MATTOLE ROAD 98 ACORN WOMAN PEAK 89 VAN BREMMER 82 INDIAN WELL 80 GAZELLE 79 WEST PROSPECT LOOKOUT 74 WEST WEED 74 BOLMUS 70 EAST LAKE SHASTINA 68 WEED AIRPORT 67 ...NEVADA... NEW WASHOE CITY 3 SW 76 ...OREGON... ACORN WOMAN PEAK 89 LONG PRAIRIE 82 FLYNN PRAIRIE 80 YAQUINA 73 FLORENCE 67 CROWN POINT 63 SUGARLOAF 61 ...WASHINGTON... MOUNT RAINEER 77 CRYSTAL MOUNTAIN 74 W CAPE ELIZABETH 72 KOSMOS 71 CAMANO ISLAND 63 SEATAC AIRPORT 59 SEATTLE 35 The potential for heavy rainfall remains across portions of northern California and far southwest Oregon through later today, but the flooding threat should start to diminish from north to south by tonight. An additional 2-4 inches of rain will be possible through today, though the northern Sierra Nevada in California could see as high as 10 inches of rain. Rock slides and debris flows are still hazards to be watched for. In addition to the heavy rainfall, another round of heavy mountain snow is likely for the Washington Cascades and northern Rockies today into Saturday, and the central Sierra Nevada tonight into Saturday. Several additional inches of snow are likely, primarily in elevations above 7500 feet. Strong winds capable of producing downed trees and power lines will also continue across the Pacific Northwest along coastal areas and mountains as a strong area of low pressure passes parallel to the coastline. 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. Wilder $$