SPECIAL WEATHER STATEMENT
Issue Date: 202 PM PST SUN DEC 6 2009
Expiration: 1015 PM PST SUN DEC 06 2009
...VERY COLD WEATHER SWEEPING SOUTH TOWARD THE PACIFIC NORTHWEST...
AN ARCTIC FRONT CURRENTLY IN SOUTHERN BRITISH COLUMBIA WILL
CONTINUE TO DROP SOUTH ON ITS WAY TO THE PACIFIC NORTHWEST PUSHING
GUSTY NORTHEAST WINDS OUT AHEAD OF ITSELF. WIND GUSTS OF 30 TO 40
MPH WILL CONTINUE TODAY AND TONIGHT...WITH HIGHER GUSTS OF 50 TO
60 MPH IN THE MOUNTAINS AND WESTERN COLUMBIA RIVER GORGE. ISOLATED
SNOW SHOWERS ARE POSSIBLE IN AND NEAR THE WEST SLOPES OF THE
CASCADES BUT ACCUMULATIONS ARE EXPECTED TO BE MINIMAL.
THE COLDER AIR MASS WILL ARRIVE TONIGHT...WITH NIGHTTIME
TEMPERATURES FALLING INTO THE TEENS AND TWENTIES FOR THE NEXT TWO
NIGHTS. DAYTIME TEMPERATURES WILL LIKELY REMAIN BELOW FREEZING ON
MONDAY...WITH SLIGHT WARMING EXPECTED ON TUESDAY. GUSTY EAST TO
NORTHEAST WINDS WILL CONTINUE TONIGHT AND MONDAY. THE COLD DRY
OFFSHORE FLOW WILL GRADUALLY EASE TUESDAY AND WEDNESDAY...BUT
PERSISTENT EAST WINDS ARE LIKELY TO CONTINUE THROUGH THE WESTERN
GORGE THROUGH MUCH OF THE UPCOMING WEEK. PRECIPITATION CHANCES
WILL REMAIN LOW UNTIL NEXT WEEKEND.
WIND CHILL VALUES WILL DROP SIGNIFICANTLY TONIGHT. IN THE
COLUMBIA GORGE...WHERE WIND GUSTS UP TO 60 MPH WILL COINCIDE WITH
TEMPERATURES IN THE UPPER TEENS TO LOWER 20S...WIND CHILL VALUES
WILL DROP TO NEAR ZERO AT TIMES. SIMILARLY...WIND CHILL VALUES IN
THE SINGLE DIGITS CAN BE EXPECTED IN SECTIONS OF THE PORTLAND
METRO AREA AND CLARK COUNTY NEAR THE GORGE. OVERNIGHT TEMPERATURES
IN THE CASCADES WILL BE IN THE SINGLE DIGITS WITH WIND CHILLS AS
LOW AS 20 DEGREES BELOW ZERO AT THE PASSES AND RIDGES.
HAZARDOUS WEATHER OUTLOOK
Issue Date: 533 AM PST SUN DEC 6 2009
Expiration: 600 AM PST MON DEC 07 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
OREGON AND SOUTHWEST WASHINGTON.
.DAY ONE...TODAY AND TONIGHT
COLD ARCTIC AIR WILL MOVE INTO THE AREA TODAY AND TONIGHT...
ACCOMPANIED BY GUSTY EAST TO NORTHEAST WINDS OF 30 TO 40 MPH...
WITH GUSTS OF 50 TO 60 MPH POSSIBLE IN THE WESTERN COLUMBIA RIVER
GORGE AND OVER THE MOUNTAINS. TEMPERATURES IN THE TEENS AND 20S
TONIGHT TONIGHT COMBINED WITH THE GUSTY WINDS WILL CREATE LOW
WIND CHILLS IN SOME AREAS.
.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
COLD ARCTIC AIR ALONG WITH GUSTY EAST TO NORTHEAST WINDS WILL
CONTINUE ON MONDAY...WITH TEMPERATURES REMAINING BELOW FREEZING
IN MOST INLAND VALLEYS. CONDITIONS WILL SLOWLY MODERATE TUESDAY
THROUGH THE REMAINDER OF THE WEEK...BUT WILL REMAIN COLDER THAN
NORMAL.
.SPOTTER INFORMATION STATEMENT...
SPOTTER REPORTS OF WIND AND COLD TEMPERATURES LIKELY WILL BE
NEEDED TODAY AND FOR THE NEXT COUPLE OF DAYS.
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