THE HYDROMETEOROLOGICAL PREDICTION CENTER

CAMP SPRINGS, MD


STORM SUMMARY MESSAGE



STORM SUMMARY NUMBER 04 FOR PACIFIC NORTHWEST WINTER STORM
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
100 AM PST THU NOV 19 2009
 
...A POWERFUL PACIFIC STORM IS MOVING INTO THE PACIFIC NORTHWEST
WITH HIGH WINDS...HEAVY RAIN...AND HEAVY SNOW...
 
FLOOD WATCHES AND WARNINGS ARE IN EFFECT FOR THE COASTAL RANGES OF
WASHINGTON AND NORTHWEST OREGON.
 
WINTER STORM AND AVALANCHE WARNINGS ARE IN EFFECT FOR THE
WASHINGTON CASCADES AND OLYMPIC MOUNTAINS.  WINTER WEATHER
ADVISORIES ARE IN EFFECT FOR PARTS OF NORTHEAST WASHINGTON.  HIGH
WIND...GALE...AND STORM WARNINGS ARE IN EFFECT ALONG THE COAST OF
WASHINGTON AND OREGON.
 
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV

AT 100 AM PST...A 977 MB...28.85 INCHES...LOW PRESSURE CENTER WAS
LOCATED JUST OFFSHORE OF CENTRAL BRITISH COLUMBIA...NEAR 53.2
NORTH...130.8 WEST...WITH A STRONG COLD FRONT EXTENDING SOUTHWARD
ALONG THE PACIFIC NORTHWEST COAST.  NATIONAL WEATHER SERVICE
DOPPLER RADARS AND SURFACE OBSERVATIONS ARE SHOWING MODERATE TO
HEAVY PRECIPITATION NOW MOVING INTO CENTRAL WASHINGTON AND
NORTHWEST OREGON.

...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 400 AM PST WED NOV
18 THROUGH 100 AM PST THU NOV 19...

...WASHINGTON...
QUILLAYUTE                            3.23                     
WYNOOCHEE LAKE                        2.52                  
HOODSPORT                             1.45                  

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

...OREGON...
ASTORIA                                 49                     
NEWPORT                                 46                     

...WASHINGTON...
LA PUSH 17.0 SSE                        64                     
HOQUIAM                                 59                     
BELLINGHAM INTL ARPT                    58                     
FRIDAY HARBOR AIRPORT                   58                     
ANACORTES 5.0 S                         57                     
WHIDBEY ISLAND NAS                      52                     


THIS SYSTEM WILL BE MOVING INLAND OVERNIGHT INTO SOUTHWESTERN
CANADA AND THEN ACROSS THE PACIFIC NORTHWEST ON THURSDAY. A SECOND
AREA OF LOW PRESSURE WILL DEVELOP JUST OFF THE BRITISH COLUMBIA
COAST ON THURSDAY AND THEN MOVE ACROSS THE PACIFIC NORTHWEST ON
FRIDAY. TOTAL RAINFALL AMOUNTS OF 4 TO 8 INCHES ARE
POSSIBLE...ESPECIALLY FOR THE COASTAL RANGES WHILE SEVERAL FEET OF
SNOW ARE POSSIBLE FOR THE HIGHER ELEVATIONS. HIGH WINDS EXCEEDING
50 MPH ARE LIKELY ALONG THE COAST...AND AVALANCHES WILL ALSO BE
POSSIBLE OVER THE OLYMPICS AND THE CASCADE MOUNTAINS OF
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.

HAMRICK/GERHARDT




Last Updated: 334 AM EST THU NOV 19 2009