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WWUS46 KPDT 171411
WSWPDT
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
611 AM PST WED DEC 17 2025
ORZ509-180000-
/O.CON.KPDT.WW.Y.0027.000000T0000Z-251218T0000Z/
EAST SLOPES OF THE OREGON CASCADES-
INCLUDING THE CITIES OF CAMP SHERMAN, LA PINE, SUNRIVER, AND
SISTERS
611 AM PST WED DEC 17 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON ABOVE 4000 FEET...
* WHAT...SNOW ABOVE 4000 FEET. ADDITIONAL SNOW ACCUMULATIONS 2 TO 4
INCHES. WINDS GUSTING AS HIGH AS 55 MPH.
* WHERE...EAST SLOPES OF THE OREGON CASCADES.
* WHEN...UNTIL 4 PM PST THIS AFTERNOON.
* IMPACTS...PLAN ON SLIPPERY ROAD CONDITIONS. STRONG WINDS COULD
CAUSE TREE DAMAGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD
CONDITIONS CAN BE OBTAINED BY VISITING TRIPCHECK.COM ONLINE, OR BY
CALLING 5 1 1.
WAZ522-180030-
/O.CON.KPDT.WW.Y.0027.000000T0000Z-251218T0600Z/
UPPER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST-
INCLUDING THE CITIES OF ROSLYN AND EASTON
611 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 65 MPH.
* WHERE...UPPER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST.
* WHEN...UNTIL 10 PM PST THIS EVENING.
* IMPACTS...SIGNIFICANT SNOWFALL WITH PERIODS OF HEAVY SNOWFALL
RATES WILL COMBINE WITH LOW VISIBILITY TO CREATE VERY DIFFICULT
DRIVING CONDITIONS. WIDESPREAD BLOWING SNOW COULD SIGNIFICANTLY
REDUCE VISIBILITY. VERY STRONG WINDS COULD CAUSE EXTENSIVE TREE
DAMAGE.
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.
WAZ523-180030-
/O.CON.KPDT.WW.Y.0027.000000T0000Z-251218T0600Z/
LOWER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST-
INCLUDING THE CITIES OF APPLETON, CLE ELUM, AND CLIFFDELL
611 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 60 MPH.
* WHERE...LOWER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST.
* WHEN...UNTIL 10 PM PST THIS EVENING.
* IMPACTS...TRAVEL COULD BE DIFFICULT DUE TO PERIODS OF MODERATE TO
HEAVY SNOW. STRONG WINDS COULD CAUSE TREE DAMAGE.
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.
MF
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