STORM SUMMARY NUMBER 03 FOR PACIFIC NORTHWEST WINTER STORM
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD   
700 PM PST WED NOV 18 2009
 
...A POWERFUL PACIFIC STORM WILL MOVE INTO THE PACIFIC NORTHWEST
WITH HIGH WINDS...HEAVY RAIN AND HEAVY SNOW...
 
FLOOD WATCHES AND HIGH WIND 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
THE OLYMPICS. WINTER WEATHER ADVISORIES ARE IN EFFECT FOR PORTIONS
OF NORTHEAST WASHINGTON. 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 600 PM PST...A 976 MB LOW PRESSURE CENTER WAS LOCATED JUST
OFFSHORE OF CENTRAL BRITISH COLUMBIA...NEAR 52.7N 132.5W WITH A
STRONG COLD FRONT EXTENDING SOUTHWARD OFF THE PACIFIC NORTHWEST
COAST. DOPPLER RADARS AND SURFACE OBSERVATIONS SHOW MODERATE TO
HEAVY RAIN NOW MOVING INLAND ACROSS THE OLYMPIC PENINSULA AND
STRETCHING SOUTHWARD ALONG THE WASHINGTON COAST INTO NORTHWEST
OREGON.


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 THEN MOVE ACROSS THE PACIFIC NORTHWEST ON
FRIDAY. STRONG WINDS...HEAVY RAIN AND HEAVY SNOW WILL SPREAD
INLAND OVERNIGHT AND CONTINUE THROUGH THURSDAY AND FRIDAY. TOTAL
RAINFALL AMOUNTS OF 4 TO 8 INCHES ARE POSSIBLE...ESPECIALLY FOR
THE COASTAL RANGES WHILE SEVERAL FEET OF SNOW IS 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 100 AM PST. PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS
EVENT.

ORRISON