THE HYDROMETEOROLOGICAL PREDICTION CENTER

CAMP SPRINGS, MD


STORM SUMMARY MESSAGE



STORM SUMMARY NUMBER 5 FOR WESTERN U.S. WINTER STORM
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
100 AM PST THU JAN 19 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 THE
PACIFIC NORTHWEST INTO NORTHERN AND CENTRAL CALIFORNIA...THEN
EASTWARD INTO THE NORTHERN GREAT BASIN AND NORTHERN HIGH PLAINS. 
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 AND FOR PARTS OF WEST CENTRAL IDAHO AND MONTANA.
 
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV

AT 1200 AM 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. 
FARTHER INLAND...A RAIN/SNOW MIX WAS OBSERVED FALLING IN ANOTHER
SOLID AREA OF PRECIPITATION OVER CENTRAL AND SOUTHERN IDAHO
SOUTHEASTWARD INTO 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...EAST-SOUTHEASTWARD INTO CENTRAL WYOMING.

...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 200 PM PST MON JAN
16 THROUGH 100 AM PST THU JAN 19...

...CALIFORNIA...
CARRVILLE 11 SSW                     12.5                     
JUNCTION CITY 2 N                    12.0                     
WEAVERVILLE 1 SSW                    12.0                     
DUNSMUIR 4 SSW                        8.0                     

...IDAHO...
KETCHUM 22 NW                        38.5                     
STANLEY 28 NE                        32.9                     
BURLEY 30 SW                         22.2                     
PINE                                 16.5                     
MULLAN                               15.0 ESTIMATED           
BOISE 12 NE                          14.0                     
NW WASCO                             14.0                     
WALLACE                              14.0 ESTIMATED           
MONTPELIER 11 NE                     13.8                     
OSBURN                               13.5                     
OROFINO 3 NE                         12.0                     
PRICHARD                             12.0 ESTIMATED           
CORRAL 3 WSW                         11.0                     
MISSOULA 10 N                        11.0                     
NNE FAIRFIELD                        11.0                     

...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                     
HELENA                                7.7                     

...OREGON...
MT. HOOD MEADOWS                     50.0 ESTIMATED 50-55     
TIMBERLANE                           45.0 ESTIMATED 45-55     
BLAZED ALDER                         35.0 ESTIMATED           
MOUNT HOOD TEST                      35.0 ESTIMATED 35-40     
GOVERNMENT CAMP                      34.0                     
BEAR GRASS                           32.0 ESTIMATED 32-36     
NORTH FORK                           31.0                     
CLACKAMAS LAKE                       30.0 ESTIMATED           
CLEAR LAKE                           30.0 ESTIMATED           
DALY LAKE                            30.0 ESTIMATED           
GREENPOINT                           30.0 ESTIMATED 30-35     
LITTLE MEADOWS                       30.0 ESTIMATED 30-35     
MUD RIDGE                            30.0 ESTIMATED 30-35     

...WASHINGTON...
JUNE LAKE                            31.0                     
SURPRISE LAKE                        30.0 ESTIMATED           
CALAMITY                             25.0 ESTIMATED           
LONE PINE                            25.0 ESTIMATED 25-30     
PEPPER CREEK                         25.0 ESTIMATED           
SPENCER MEADOW                       25.0 ESTIMATED           
SWIFT CREEK                          25.0 ESTIMATED 25-30     
OLYMPIA 6.5 SW                       21.7                     
JUNE LAKE SNOTEL                     20.0                     
SHEEP CANYON                         20.0 ESTIMATED 20-25     
SEATTLE                               4.0                     

...WYOMING...
JACKSON 8 WNW                        13.0                     
AFTON 17 E                           12.0                     
PAHASKA 14 NE                        12.0                     
BONDURANT 19 SW                      11.0                     
SOUTH ENTRANCE 5 N - YELLOWSTONE     11.0                     
CORA 22 N                            10.0                     
THAYNE 17.2 E                        10.0                     
KEMMERER 36 N                         9.0                     
MORAN JUNCTION 8 NNE                  9.0                     
ALPINE                                8.0                     
CLARK 21 W                            8.0                     
CODY 56 SW                            8.0                     
HOBACK JUNCTION                       8.0                     

...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 200 PM PST MON JAN
16 THROUGH 100 AM PST THU JAN 19...

...CALIFORNIA...
CRESCENT CITY/MC NAMARA FIELD         3.30                        
                

...OREGON...
SALEM/MCNARY FIELD                    4.47                     
CORVALLIS MUNI ARPT                   4.21                     
LANGLOIS 1 NNE                        4.12                     
OBRIEN 1 SSW                          4.02                     
NE BROOKINGS                          3.52
MERLIN 6 SW                           3.15                    
SCOTTSBURG 2 E                        3.00                     
CAVE JUNCTION 2 SSW                   2.86                     
EUGENE/MAHLON SWEET FLD               2.67                     
MCMINNVILLE MUNI ARPT                 2.47                     
WILDERVILLE 2 WSW                     2.28                     

...SELECTED STORM TOTAL FREEZING RAIN ICE AMOUNTS IN INCHES FROM
200 PM PST MON JAN 16 THROUGH 100 AM PST THU JAN 19...

...WASHINGTON...
NORTH BEND 2 SE                       0.30                     
ISSAQUAH                              0.25                     

...SELECTED PEAK WIND GUSTS IN MILES PER HOUR EARLIER IN THE
EVENT...

...IDAHO...
MULLAN PASS                           69

...MONTANA...
LIVINGSTON AIRPORT                    71

...OREGON...
NORTH BEND MUNI ARPT                  66
NEWPORT MUNI ARPT                     64

...WYOMING...
WHEATLAND 9 S                         77                     
CENTENNIAL 14 NE                      68                     
ARLINGTON                             65
LANDER/HUNT FIELD                     64                          
       


THIS WILL BE A MULTI-DAY EVENT FOR LARGE PORTIONS OF THE
NORTHWESTERN UNITED STATES FROM THE PACIFIC NORTHWEST AND NORTHERN
AND CENTRAL CALIFORNIA 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 MUCH 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 700 AM PST. PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS
EVENT.

GERHARDT




Last Updated: 345 AM EST THU JAN 19 2012