029
WWUS46 KPDT 171828
WSWPDT
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
1028 AM PST WED DEC 17 2025
ORZ509-171930-
/O.CAN.KPDT.WW.Y.0027.000000T0000Z-251218T0000Z/
EAST SLOPES OF THE OREGON CASCADES-
INCLUDING THE CITIES OF SUNRIVER, CAMP SHERMAN, SISTERS, AND LA
PINE
1028 AM PST WED DEC 17 2025
..WINTER WEATHER ADVISORY IS CANCELLED
THE THREAT HAS ENDED. SNOWFALL THROUGH THE DAY WILL BE LIGHT.
WAZ522-180600-
/O.CON.KPDT.WW.Y.0027.000000T0000Z-251218T0600Z/
UPPER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST-
INCLUDING THE CITIES OF EASTON AND ROSLYN
1028 AM PST WED DEC 17 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS 3 TO 5 INCHES. WINDS
GUSTING AS HIGH AS 55 MPH.
* WHERE...UPPER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST.
* WHEN...UNTIL 10 PM PST THIS EVENING.
* IMPACTS...PLAN ON WINTER WEATHER DRIVING CONDITIONS. PERIODS OF
MODERATE TO HEAVY SNOWFALL, VERY STRONG WINDS, AND BLOWING SNOW
COULD SIGNIFICANTLY REDUCE VISIBILITY ALONG I-90 AND US 12.
* ADDITIONAL DETAILS...NEAR-BLIZZARD CONDITIONS CHARACTERIZED BY
VERY STRONG WINDS AND LOW VISIBILITY ARE EXPECTED WITH THE PASSAGE
OF A STRONG COLD FRONT TUESDAY NIGHT INTO EARLY WEDNESDAY MORNING.
TEMPERATURES WILL FALL QUICKLY WITH THE PASSAGE OF THE COLD FRONT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD
CONDITIONS CAN BE OBTAINED BY VISITING THE WEBSITE
WSDOT.WA.GOV/TRAVEL.
WAZ523-180600-
/O.CON.KPDT.WW.Y.0027.000000T0000Z-251218T0600Z/
LOWER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST-
INCLUDING THE CITIES OF CLE ELUM, CLIFFDELL, AND APPLETON
1028 AM PST WED DEC 17 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING...
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO 3 INCHES. WINDS
GUSTING AS HIGH AS 50 MPH.
* WHERE...LOWER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST.
* WHEN...UNTIL 10 PM PST THIS EVENING.
* IMPACTS...PLAN ON WINTER WEATHER DRIVING CONDITIONS. PERIODS OF
MODERATE TO HEAVY SNOWFALL, VERY STRONG WINDS, AND BLOWING SNOW
COULD SIGNIFICANTLY REDUCE VISIBILITY ALONG I-90, US 12, AND US 97.
* ADDITIONAL DETAILS...NEAR-BLIZZARD CONDITIONS CHARACTERIZED BY
VERY STRONG WINDS AND LOW VISIBILITY ARE EXPECTED WITH THE PASSAGE
OF A STRONG COLD FRONT TUESDAY NIGHT INTO EARLY WEDNESDAY MORNING.
TEMPERATURES WILL FALL QUICKLY WITH THE PASSAGE OF THE COLD FRONT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD
CONDITIONS CAN BE OBTAINED BY VISITING THE WEBSITE
WSDOT.WA.GOV/TRAVEL.
MD
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