THE HYDROMETEOROLOGICAL PREDICTION CENTER
CAMP SPRINGS, MD
STORM SUMMARY MESSAGE
STORM SUMMARY NUMBER 4 FOR WESTERN U.S. WINTER STORM
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
700 PM PST WED JAN 18 2012
...A MAJOR WINTER STORM AFFECTING THE NORTHWESTERN UNITED STATES
WITH HEAVY SNOW...HEAVY RAINS...AND VERY STRONG WINDS...
WINTER STORM WATCHES...WARNINGS...AND ADVISORIES ARE CURRENTLY IN
EFFECT FOR A LARGE PORTION OF THE NORTHWESTERN U.S. FROM NORTHERN
CALIFORNIA...THE PACIFIC NORTHWEST...NORTHERN ROCKIES...AND INTO
THE NORTHERN GREAT BASIN AND NORTHERN HIGH PLAINS. WINTER STORM
WARNINGS AND WINTER WEATHER ADVISORIES HAVE ALSO BEEN ISSUED ALONG
THE SIERRA NEVADA RANGES. FLOOD WARNINGS ARE CURRENTLY IN EFFECT
FROM COASTAL NORTHWESTERN CALIFORNIA INTO COASTAL OREGON. HIGH
WIND WARNINGS AND WIND ADVISORIES ARE IN EFFECT ACROSS WESTERN
OREGON. HAZARDOUS SEAS WARNINGS HAVE BEEN ISSUED ALONG THE OREGON
COAST. AVALANCHE WARNINGS AND WATCHES ARE IN EFFECT FOR THE
WASHINGTON AND OREGON CASCADES.
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV
AT 600 PM PST...NATIONAL WEATHER SERVICE DOPPLER RADARS AND
SURFACE OBSERVATIONS INDICATED A LARGE AREA OF MODERATE TO HEAVY
PRECIPITATION COVERING WESTERN OREGON AND NORTHERN CALIFORNIA.
MOST OF THE HEAVIEST PRECIPITATION WAS FALLING AS RAIN...EXCEPT
FOR SOME LOCATIONS IN THE HIGHER ELEVATIONS OF THE CASCADES.
SUSTAINED WINDS IN EXCESS OF 35 MPH WERE OBSERVED ALONG THE OREGON
AND NORTHERN CALIFORNIA COASTS. FARTHER INLAND...A RAIN/SNOW MIX
WAS OBSERVED FALLING IN ANOTHER SOLID AREA OF PRECIPITATION OVER
SOUTHERN IDAHO AND SOUTHEASTWARD ACROSS NORTHERN UTAH. NORTH OF
THE HEAVIEST PRECIPITATION...SCATTERED AREAS OF MOSTLY LIGHT SNOW
WERE OBSERVED TO THE NORTH OF A WELL DEFINED ARCTIC FRONT
STRETCHING FROM SOUTHERN WASHINGTON...EASTWARD INTO CENTRAL
WYOMING.
...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 200 PM PST MON JAN
16 THROUGH 600 PM PST WED JAN 18...
...CALIFORNIA...
WEAVERVILLE 1 N 7.0
...IDAHO...
STANLEY 28 NE 28.9
KETCHUM 22 NW 28.2
MULLAN 15.0 ESTIMATED
NW WASCO 14.0
WALLACE 14.0 ESTIMATED
OSBURN 13.5
PRICHARD 12.0 ESTIMATED
MISSOULA 10 N 11.0
ELK CITY 9.6
CLARK FORK SSE 9.0
MCCALL 9 SSE 8.0
BOISE 7 SW 6.0
MISSOULA 6 E 5.5
...MONTANA...
HERON 2 NW 15.3
COPPER CAMP 13.0
MANY GLACIER 13.0
FLATTOP MOUNTAIN 12.0
SALTESE 6 NW 12.0
PIKE CREEK 11.0
SPUR PARK 11.0
BABB 11 WSW 10.0
BADGER PASS 9.0
BLACK BEAR 9.0
MADISON PLATEAU 7.0
MULE CREEK 6.0
TROY 6.0 ESTIMATED
...OREGON...
MOUNT HOOD MEADOWS 28.0
SILVERTON 9.1 SE 27.0
TIMBERLINE 26.0 ESTIMATED
LITTLE MEADOW SNOTEL 19.0
DETROIT 1 ESE 18.0
RED HILL SNOTEL 18.0
BEAR GRASS SNOTEL 16.0
BENNETT PASS 16.0
BLAZED ALDER SNOTEL 16.0
DALY LAKE SNOTEL 16.0
WHITE RIVER 16.0
CITY OF THE DALLE 10.0
...WASHINGTON...
OLYMPIA 6.5 SW 21.7
JUNE LAKE SNOTEL 20.0
EASTON 7 NNW 18.0
SHEEP CANYON SNOTEL 17.0
SURPRISE LAKE SNOTEL 17.0
TROUT LAKE 1 W 17.0
CHEHALIS 2 SSE 16.0
SPENCER MEADOW SNOTEL 15.0
SWIFT CREEK SNOTEL 15.0
VAIL 4 ENE 14.0
OSBURN 13.5
LACEY 5 S 13.0 ESTIMATED
PEPPER CREEK SNOTEL 13.0
PLAIN 1 NW 12.7
PORT ANGELES 8.1 SSW 10.3
ARLINGTON 2 NNE 10.0
CAMAS 10.0
OLYMPIA 6 WNW 10.0
WHITE SALMON 4 ENE 10.0
BELLINGHAM 1.5 SW 9.0
HURRICANE RIDGE 6 NW 8.0
SEATTLE 4.0
YAKIMA 1 SSW 4.0
...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 200 PM PST MON JAN
16 THROUGH 600 PM PST WED JAN 18...
...OREGON...
LANGLOIS 1 NNE 4.12
SCOTTSBURG 2 E 3.00
WILDERVILLE 2 WSW 2.28
SAGINAAW 2 W 2.02
BANDON 3 S 1.98
LANGLOIS 2 NNE 1.95
COOS BAY 3 SSE 1.55
W MYRTLE POINT 1.14
...SELECTED PEAK WIND GUSTS IN MILES PER HOUR EARLIER IN THE
EVENT...
...OREGON...
PORT ORFORD 6 NW 88
BANDON 3 S 63
...UTAH...
BURNTFORK 80
SNOWBASIN 65
WELLSVILLE 62
THIS WILL BE A MULTI-DAY EVENT FOR LARGE PORTIONS OF THE
NORTHWESTERN UNITED STATES FROM NORTHERN CALIFORNIA...THROUGH THE
PACIFIC NORTHWEST OF WASHINGTON AND OREGON AND INTO THE NORTHERN
ROCKIES ACROSS NORTHWESTERN MONTANA...ALL OF IDAHO...WESTERN
WYOMING...NORTHEASTERN NEVADA AND INTO THE NORTHERN WASATCH AND
UINTA RANGES OF UTAH. A SERIES OF STORM SYSTEMS WILL BE MOVING
OFF THE NORTHEASTERN PACIFIC OCEAN AND INTO THE NORTHWESTERN
UNITED STATES THROUGH THE END OF THIS WEEK AND INTO A LARGE
PORTION OF NEXT WEEK. WHILE THERE WILL BE BREAKS IN THE HEAVY
PRECIPITATION BETWEEN THE STORM SYSTEMS AFFECTING THE NORTHWESTERN
UNITED STATES...VERY HEAVY RAINFALL AND SNOWFALL AMOUNTS ARE
LIKELY. RAINFALL TOTALS WILL RANGE FROM 10-20 INCHES ALONG THE
OREGON COAST AND INTO THE NORTHERN CALIFORNIA COAST...WHILE
SNOWFALL TOTALS OF 4 TO 6 FEET ARE LIKELY THROUGH THE CASCADES OF
WASHINGTON/OREGON...THE SHASTA/SISKIYOU/NORTHERN SIERRA RANGES OF
CALIFORNIA...THROUGH THE NORTHERN WASATCH AND UINTA RANGES OF UTAH
AND ACROSS THE NORTHERN ROCKIES FROM FAR EASTERN IDAHO/WESTERN
WYOMING...THROUGH CENTRAL TO NORTHERN IDAHO...NORTHWESTERN MONTANA
AND NORTHEASTERN OREGON. IN ADDITION TO THE HEAVY
PRECIPITATION...VERY STRONG WINDS WILL ACCOMPANY EACH STORM SYSTEM
AS IT MOVES ASHORE THROUGH THE REMAINDER OF THIS WEEK INTO NEXT
WEEK ALONG COASTAL SECTIONS FROM NORTHWESTERN CALIFORNIA INTO
OREGON AND WASHINGTON.
THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 100 AM PST. PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS
EVENT.
GERHARDT
Last Updated: 959 PM EST WED JAN 18 2012