SPECIAL WEATHER STATEMENT
Issue Date: 512 PM PST THU DEC 10 2009
Expiration: 500 AM PST FRI DEC 11 2009
...WINTER PRECIPITATION EVENT ACROSS OREGON AND FAR SOUTHERN
WASHINGTON THIS WEEKEND...
A COMPLEX STORM SYSTEM WILL APPROACH THE AREA FRIDAY NIGHT AND MOVE
ACROSS OREGON AND FAR SOUTHERN WASHINGTON SATURDAY THROUGH SUNDAY.
THE ARCTIC AIR MASS OVER THE REGION IS MODERATING VERY SLOWLY...SO
MOST OF THE PRECIPITATION FROM THIS STORM WILL FALL IN THE FORM OF
SNOW. THERE IS SOME UNCERTAINTY ON HOW FAR NORTH THE MOISTURE FROM
THIS SYSTEM WILL SPREAD...BUT THERE IS THE POTENTIAL FOR
ACCUMULATING SNOW IN THE LOWER ELEVATIONS OF NORTHEAST OREGON AND FAR
SOUTHERN WASHINGTON IN ADDITION TO THE MOUNTAINS DEPENDING ON THE
STORM TRACK. SOME WARMER AIR ALOFT WILL SPREAD OVER PARTS OF THE
COLUMBIA RIVER GORGE, THE LOWER COLUMBIA BASIN, AND THE ADJOINING
FOOTHILLS WHICH COULD LEAD TO SOME FREEZING RAIN AND SLEET MIXED IN
WITH THE SNOW ON SATURDAY.
THIS IS AN EVOLVING SITUATION AND PEOPLE ACROSS INTERIOR PORTIONS
OF OREGON AND EXTREME SOUTHERN WASHINGTON SHOULD CONTINUE TO MONITOR
THE FORECASTS OVER THE NEXT COUPLE OF DAYS. THOSE PLANNING TRAVEL
ACROSS THE AREAS MENTIONED ABOVE SHOULD BE PREPARED FOR WINTER
DRIVING CONDITIONS.
HAZARDOUS WEATHER OUTLOOK
Issue Date: 255 PM PST THU DEC 10 2009
Expiration: 615 AM PST FRI DEC 11 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON
AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON.
.DAY ONE...TONIGHT
STRONG WIND
GRANDE RONDE VALLEY
BREEZY TO WINDY CONDITIONS ARE EXPECTED OVERNIGHT MAINLY IN THE
SOUTHERN PORTION OF THE GRANDE RONDE VALLEY.
.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY
WINTER MIX FRIDAY NIGHT
NORTH CENTRAL OREGON, CENTRAL OREGON
SNOW FRIDAY NIGHT
NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES, JOHN DAY
BASIN, OCHOCO-JOHN DAY HIGHLANDS
STRONG WIND FRIDAY
GRANDE RONDE VALLEY
WINTER MIX SATURDAY
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON, EASTERN COLUMBIA
RIVER GORGE OF OREGON, NORTH CENTRAL OREGON, CENTRAL OREGON,
LOWER COLUMBIA BASIN OF OREGON, FOOTHILLS OF THE BLUE
MOUNTAINS OF OREGON, NORTHERN WHEELER AND SOUTHERN GILLIAM
COUNTIES, JOHN DAY BASIN
SNOW SATURDAY
EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON, LOWER
COLUMBIA BASIN OF WASHINGTON, FOOTHILLS OF THE BLUE MOUNTAINS
OF WASHINGTON, NORTHWEST BLUE MOUNTAINS, GRANDE RONDE VALLEY,
WALLOWA COUNTY, NORTHERN BLUE MOUNTAINS OF OREGON, SOUTHERN
BLUE MOUNTAINS OF OREGON, OCHOCO-JOHN DAY HIGHLANDS
SNOW SUNDAY
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON, NORTHWEST BLUE
MOUNTAINS, GRANDE RONDE VALLEY, WALLOWA COUNTY, FOOTHILLS OF
THE BLUE MOUNTAINS OF OREGON, NORTHERN BLUE MOUNTAINS OF
OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON, NORTHERN WHEELER
AND SOUTHERN GILLIAM COUNTIES, JOHN DAY BASIN, OCHOCO-JOHN DAY
HIGHLANDS
A MIX OF WINTERY PRECIPITATION IS EXPECTED TO IMPACT A LARGE PORTION
OF THE FORECAST AREA FRIDAY NIGHT THROUGH SUNDAY. CHECK THE LATEST
FORECAST FOR MORE DETAILS.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUIRED.
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
GRAPHICAL FORECASTS OF WEATHER HAZARDS OUT TO SEVEN DAYS
ARE DISPLAYED ON THE WORLD WIDE WEB AT:
WWW.WRH.NOAA.GOV/PDT/CURRENTHAZARDS/HWO.HTML
ALL LETTERS IN THE ABOVE URL ARE LOWER CASE...EXCEPT THE H IN
CURRENTHAZARDS.
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