Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE PENDLETON OR
528 AM PST MON NOV 23 2009

ORZ041>044-049-050-501>506-WAZ024-026>030-501-502-241315-
EASTERN COLUMBIA RIVER GORGE OF OREGON-NORTH CENTRAL OREGON-
CENTRAL OREGON-LOWER COLUMBIA BASIN OF OREGON-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-
EASTERN COLUMBIA RIVER GORGE OF WASHINGTON-KITTITAS VALLEY-
YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-
NORTHWEST BLUE MOUNTAINS-
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON-
EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON-
528 AM PST MON NOV 23 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON
AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON.

.DAY ONE...TODAY AND TONIGHT

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

A WEAK UPPER RIDGE WILL BE OVER THE REGION TODAY AND WILL CAUSE
MOSTLY DRY CONDITIONS. A DISTURBANCE IN THE GULF OF ALASKA WILL
FLATTEN THE RIDGE LATE TODAY AND TONIGHT AS IT MOVES THROUGH
SOUTHERN BRITISH COLUMBIA. THIS SYSTEM WILL BRING SOME LIGHT RAIN OR
SNOW TO SOUTHEAST WASHINGTON AND PORTIONS OF NORTHEAST OREGON LATE
THIS AFTERNOON AND TONIGHT. THE AREA THAT HAS THE BEST CHANCE FOR
PRECIPITATION WILL BE THE EAST SLOPES OF THE WASHINGTON CASCADES.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

A FEW SHOWERS WILL LINGER...ESPECIALLY OVER THE MOUNTAINS...AS THE
LATE MONDAY/MONDAY NIGHT DISTURBANCE EXITS THE REGION. AN UPPER
LEVEL HIGH PRESSURE RIDGE WILL CAUSE MOSTLY DRY CONDITIONS WEDNESDAY
AND ON THANKSGIVING. THERE MAY BE SOME FOG OR FREEZING FOG IN THE
COLUMBIA BASIN AS WELL WEDNESDAY AND THANKSGIVING DAY. UNSETTLED
CONDITIONS SHOULD RETURN THANKSGIVING NIGHT AND PERSIST INTO SUNDAY.

.SPOTTER INFORMATION STATEMENT..

SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

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.

$$

Webmaster
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Pendleton Weather Forecast Office
2001 NW 56th Drive
Pendleton, OR 97801

Tel: (541) 276-7832