SPECIAL WEATHER STATEMENT
Issue Date: 159 PM PST TUE DEC 8 2009
Expiration: 1000 PM PST TUE DEC 08 2009
...VERY COLD WEATHER WILL CONTINUE THIS WEEK OVER THE PACIFIC
NORTHWEST...
A MODIFIED ARCTIC AIR MASS OVER SOUTHWEST WASHINGTON AND NORTHWEST
OREGON WILL CONTINUE THIS WEEK. DAYTIME HIGH TEMPERATURES ARE NOT
EXPECTED TO RISE ABOVE FREEZING TODAY AND WEDNESDAY IN THE INLAND
VALLEYS...WHILE NIGHTTIME LOWS WILL BE AROUND 10 TO 15 DEGREES
TONIGHT. COASTAL AREAS WILL ALSO BE VERY COLD TONIGHT WITH LOW
TEMPERATURES IN THE UPPER TEENS TO MID 20S...WHILE DAYTIME HIGHS
ARE LIKELY TO REMAIN IN THE 30S THROUGH WEDNESDAY. A SLOW WARMING
TREND IS EXPECTED THURSDAY AND FRIDAY BUT CONDITIONS WILL REMAIN
COLDER THAN NORMAL.
RESIDUAL NORTHEAST WINDS WILL CONTINUE TO DECREASE IN MOST AREAS
TODAY. HOWEVER...SOME EAST WINDS ARE LIKELY AT TIMES IN THE
WESTERN COLUMBIA GORGE THROUGH MUCH OF THE WEEK.
MODEL GUIDANCE CONTINUES TO INDICATE A TRANSITION OUT OF THE
ARCTIC AIR MASS THIS WEEKEND. THE INITIAL SYSTEM IS EXPECTED
AROUND FRIDAY NIGHT...WHICH MAY BRING SOME FREEZING RAIN TO THE
INTERIOR LOWLANDS FRIDAY NIGHT INTO SATURDAY MORNING.
HAZARDOUS WEATHER OUTLOOK
Issue Date: 528 AM PST TUE DEC 8 2009
Expiration: 600 AM PST WED DEC 09 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
OREGON AND SOUTHWEST WASHINGTON.
.DAY ONE...TODAY AND TONIGHT
COLD ARCTIC AIR WILL CONTINUE OVER THE AREA TODAY AND TONIGHT.
EAST TO NORTHEAST WINDS WILL CONTINUE TO DECREASE...WITH ONLY
LOCAL GUSTS TO AROUND 20 MPH THIS MORNING. NEAR THE WESTERN
COLUMBIA RIVER GORGE EAST WINDS OF 15 TO 25 MPH WILL CONTINUE
TODAY THEN SLOWLY DROP OFF TONIGHT. TEMPERATURES WILL FALL INTO
THE TEENS IN MOST AREAS TONIGHT.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
COLD ARCTIC AIR WILL CONTINUE WEDNESDAY. CONDITIONS WILL SLOWLY
MODERATE THURSDAY AND FRIDAY...BUT WILL REMAIN COLDER THAN
NORMAL. FRIDAY NIGHT AND SATURDAY MORNING THERE IS A POSSIBILITY
OF SOME FREEZING RAIN INLAND AREAS AS A DISTURBANCE FROM THE
PACIFIC LIFTS NORTHEAST INTO THE REGION. THIS SYSTEM WILL SCOUR
OUT MOST OF THE COLDER AIR ON SATURDAY.
.SPOTTER INFORMATION STATEMENT...
SPOTTER REPORTS OF COLD TEMPERATURES LIKELY WILL BE NEEDED
THROUGH THURSDAY.
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