STORM SUMMARY NUMBER 02 FOR PACIFIC NORTHWEST WINTER STORM
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD  
100 PM PST WED NOV 18 2009
 
...A POWERFUL PACIFIC STORM WILL MOVE INTO THE PACIFIC NORTWHEST
WITH HIGH WINDS...HEAVY RAIN AND HEAVY SNOW...
 
WATCHES FOR FLOODING...HIGH WINDS...HEAVY SNOW AND AVALANCHES ARE
IN EFFECT FOR PORTIONS OF WASHINGTON...WHILE HIGH WIND WATCHES AND
WARNINGS COVER THE COASTAL AREAS OF OREGON.
 
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV

AT 100 PM PST...A 976 MB LOW PRESSURE CENTER WAS LOCATED OVER THE
SOUTHERN GULF OF ALASKA...50.9N 133.7W WITH A STRONG COLD FRONT
EXTENDING SOUTH. THIS SYSTEM WILL STRENGTHEN AND MOVE INTO
SOUTHWESTERN CANADA AND THE PACIFIC NORTHWEST STATES WEDNESDAY
NIGHT AND THEN STALL. 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
SNOW WILL INCREASE THIS EVENING AND CONTINUE OVERNIGHT INTO
THURSDAY AND POSSIBLY FRIDAY. TOTAL RAINFALL AMOUNTS OF 4 TO 8
INCHES...SNOWFALL AMOUNTS MEASURED IN FEET AND HIGH WINDS
EXCEEDING 50 MPH ARE LIKELY. AVALANCHES WILL ALSO BE POSSIBLE
LOCALLY OVER THE OLYMPICS AND THE CASCADE MOUNTAINS OF WASHINGTON.


DOPPLER WEATHER RADARS AND SURFACE OBSERVATIONS SHOWED GENERALLY
LIGHT RAIN CURRENTLY IMPACTING THE OLYMPIC PENINSULA WITH HEAVIER
PRECIPITATION APPROACHING FROM OFFSHORE. THIS PRECIPITATION WILL
CONTINUE EASTWARD AND OVERSPREAD THE REGION OVERNIGHT.

THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 700 PM PST. PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS
EVENT.

ORRISON