HAZARDOUS WEATHER OUTLOOK
Issue Date: 500 AM PST FRI JAN 1 2010
Expiration: 500 AM PST SAT JAN 02 2010
THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND NORTHEAST OREGON
AS WELL AS SOUTH CENTRAL AND SOUTHEAST WASHINGTON.
.DAY ONE...TODAY AND TONIGHT
WINTER MIX
EAST SLOPES OF THE CENTRAL CASCADES OF WASHINGTON, EAST SLOPES
OF THE SOUTHERN CASCADES OF WASHINGTON, KITTITAS VALLEY
STRONG WIND
GRANDE RONDE VALLEY
FREEZING RAIN
YAKIMA VALLEY, LOWER COLUMBIA BASIN OF WASHINGTON, FOOTHILLS
OF THE BLUE MOUNTAINS OF WASHINGTON, LOWER COLUMBIA BASIN OF
OREGON, FOOTHILLS OF THE BLUE MOUNTAINS OF OREGON
A LARGE AND COMPLEX PACIFIC STORM WILL CONTINUE TO IMPACT THE REGION
AND FORECAST AREA THIS MORNING. AREAS OF SNOW OR A MIXTURE OF
SNOW...FREEZING RAIN AND RAIN WILL PERSIST THROUGH THIS MORNING FROM
THE BLUE MOUNTAIN NORTH AND WEST AND ALSO THE GRANDE RONDE VALLEY.
THE PRECIPITATION WILL TAPER TO ISOLATED TO SCATTERED SHOWERS THIS
AFTERNOON. NUMEROUS WINTER WEATHER WARNINGS AND ADVISORIES CONTINUE
THROUGH AT LEAST 10 AM THIS MORNING. PLEASE REFER TO PRODUCT ID
PDXWSWPDT FOR MORE DETAILS.
IN ADDITION TIGHT PRESSURE AND TEMPERATURE GRADIENTS BETWEEN THE
BAKER AND GRANDE RONDE VALLEYS WILL CONTINUE TO CAUSE STRONG WINDS
IN MAINLY SOUTHERN UNION COUNTY TODAY. A WIND ADVISORY WILL REMAIN
IN EFFECT THERE THROUGH 4 PM THIS AFTERNOON. PLEASE REFER TO PRODUCT
ID PDXNPWPDT FOR MORE DETAILS.
TONIGHT CONDITIONS WILL BECOME INACTIVE THOUGH THERE COULD STILL BE
LIGHT RAIN OR SNOW SHOWERS OVER THE CASCADE EAST SLOPES AND OVER
THE NORTHEAST AND CENTRAL OREGON MOUNTAINS.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.
UNSETTLED CONDITIONS WILL PERSIST THROUGH THE WEEKEND INTO NEXT WEEK
WITH ONE PACIFIC WEATHER SYSTEM AFTER ANOTHER. THE LATEST MODELS ARE
STILL HINTING AT SOME COLDER AIR TO BE BROUGHT DOWN FROM THE NORTH
BY THE MIDDLE TO END OF NEXT WEEK AS AN UPPER RIDGE BUILDS OVER
WESTERN OREGON AND WASHINGTON WITH A COLD NORTHERLY FLOW ON THE EAST
SIDE OF THE UPPER RIDGE AXIS OVER THE FORECAST AREA. HOWEVER AT THIS
TIME AM NOT EXPECTING ANY SIGNIFICANT ARCTIC AIR.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION WILL BE LIKELY.
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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