733 
FLUS46 KPDT 212248 AAA
HWOPDT

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE PENDLETON OR
250 PM PST THU JAN 21 2010

UPDATED FOR SNOW ACCUMULATIONS FRIDAY THROUGH SATURDAY

ORZ041>044-049-050-501>506-WAZ024-026>030-501-502-221300-
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 OF WASHINGTON-
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON-
EAST SLOPES OF THE SOUTHERN CASCADES OF WASHINGTON-
250 PM PST THU JAN 21 2010

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

.DAY ONE...REST OF TODAY AND TONIGHT

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

WHILE MOST OF THE FORECAST AREA WILL BE DRY TODAY AND TONIGHT WITH 
PARTLY TO MOSTLY CLOUDY SKIES...A LOW PRESSURE SYSTEM OVER 
CALIFORNIA WILL BRING A CHANCE OF SNOW IN CENTRAL OREGON AFTER 
MIDNIGHT.  

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SNOW FRIDAY
     NORTHWEST BLUE MOUNTAINS OF WASHINGTON, NORTH CENTRAL OREGON, 
     CENTRAL OREGON, GRANDE RONDE VALLEY, WALLOWA COUNTY, NORTHERN 
     BLUE MOUNTAINS OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON, 
     NORTHERN WHEELER AND SOUTHERN GILLIAM COUNTIES, JOHN DAY 
     BASIN, OCHOCO-JOHN DAY HIGHLANDS 

SNOW SATURDAY
    NORTHWEST BLUE MOUNTAINS OF WASHINGTON, NORTHERN BLUE MOUNTAINS
    OF OREGON, SOUTHERN BLUE MOUNTAINS OF OREGON, GRANDE RONDE      
    VALLEY, WALLOWA COUNTY

THE LOW PRESSURE SYSTEM OVER CALIFORNIA WILL SWING NORTHEAST ON 
FRIDAY AND INTO IDAHO FRIDAY NIGHT.  THIS SYSTEM WILL BRING 
WIDESPREAD RAIN AND SNOW OVER CENTRAL AND NORTHEAST OREGON LATE 
FRIDAY WITH SNOW LEVELS AROUND 3000 FEET.  THE HEAVIEST 
ACCUMULATIONS WILL OCCUR FROM THE BLUE MOUNTAINS EASTWARD...AND A 
SPECIAL WEATHER STATEMENT HAS BEEN ISSUED TO HIGHLIGHT THE POTENTIAL 
FOR SIGNIFICANT SNOW.  FOR DETAILS...REFER TO THE NWS 
PRODUCT...PDXSPSPDT.  

THE NEXT SYSTEM WILL MOVE INTO THE PACNW SUNDAY AND SUNDAY NIGHT. 
THIS SYSTEM WILL SPREAD PRECIP INTO CENTRAL OREGON AND ALONG THE 
CASCADE CREST SUNDAY... MAINLY SUNDAY AFTERNOON...THEN ACROSS THE 
ENTIRE REGION SUNDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED FRIDAY NIGHT THROUGH SATURDAY
NIGHT.

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.

$$