HAZARDOUS WEATHER OUTLOOK
Issue Date: 500 AM PST TUE DEC 22 2009
Expiration: 445 AM PST WED DEC 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 LARGE LOW PRESSURE SYSTEM OVER EASTERN OREGON WILL BRING
SCATTERED TO NUMEROUS SNOW SHOWERS OVER THE MOUNTAINS. NUMEROUS
SNOW SHOWERS WILL CONTINUE OVER NORTHEAST OREGON THIS
MORNING...MAINLY IN WALLOWA COUNTY WHERE ACCUMULATIONS UP TO 2
INCHES ARE EXPECTED. SCATTERED SNOW SHOWERS WILL DEVELOP IN CENTRAL
OREGON THIS AFTERNOON WITH LOCAL ACCUMULATIONS AROUND ONE INCH
POSSIBLE.
THE LOW WILL MOVE SOUTH AND OUT OF THE REGION TONIGHT FOLLOWED BY
CLEARING SKIES AND LIGHT WINDS. STRONG RADIATIONAL COOLING WILL
RESULT IN COLD OVERNIGHT LOW TEMPERATURES.
.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.
HIGH PRESSURE WILL STRENGTHEN OVER THE PACIFIC NORTHWEST THIS
WEEK...RESULTING IN DRY AND STABLE CONDITIONS. PATCHY FREEZING FOG
IS FORECAST OVER CENTRAL OREGON AND THE COLUMBIA BASIN ON CHRISTMAS
EVE NIGHT. HIGH PRESSURE WILL WEAKEN THIS HOLIDAY WEEKEND AND ALLOW
MOISTURE FROM THE PACIFIC TO SPREAD INLAND WITH A POTENTIAL FOR
WINTER PRECIPITATION...MAINLY ALONG THE EAST SLOPES OF THE CASCADES.
.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.
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