409
WWUS46 KPDT 181044
WSWPDT
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
244 AM PST THU DEC 18 2025
ORZ509-181800-
/O.CON.KPDT.WW.Y.0027.000000T0000Z-251218T1800Z/
EAST SLOPES OF THE OREGON CASCADES-
INCLUDING THE CITIES OF CAMP SHERMAN, LA PINE, SISTERS, AND
SUNRIVER
244 AM PST THU DEC 18 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST THIS
MORNING...
* WHAT...WET SNOW. ADDITIONAL SNOW ACCUMULATIONS UP TO 4 INCHES.
WINDS GUSTING AS HIGH AS 35 MPH.
* WHERE...EAST SLOPES OF THE OREGON CASCADES.
* WHEN...UNTIL 10 AM PST THIS MORNING.
* IMPACTS...TRAVEL COULD BE DIFFICULT DUE TO PERIODS OF MODERATE TO
HEAVY SNOW. WIDESPREAD BLOWING SNOW COULD SIGNIFICANTLY REDUCE
VISIBILITY.
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.
WAZ522-181800-
/O.CON.KPDT.WW.Y.0027.000000T0000Z-251219T0000Z/
UPPER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST-
INCLUDING THE CITIES OF EASTON AND ROSLYN
244 AM PST THU DEC 18 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
* WHAT...SNOW. ADDITIONAL SNOW ACCUMULATIONS BETWEEN 1 AND 8 INCHES.
WINDS GUSTING 25 TO 35 MPH. FREEZING RAIN UP TO A TENTH OF AN INCH
THIS AFTERNOON.
* WHERE...UPPER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST.
* WHEN...UNTIL 4 PM PST THIS AFTERNOON.
* IMPACTS...PERIODS OF MODERATE AND HEAVY SNOW WILL COMBINE WITH LOW
VISIBILITIES TO CREATE DIFFICULT DRIVING CONDITIONS. GUSTY WINDS
COULD BRING DOWN TREE BRANCHES.
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.
WAZ523-181800-
/O.CON.KPDT.WW.Y.0027.000000T0000Z-251219T0000Z/
LOWER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST-
INCLUDING THE CITIES OF CLE ELUM, APPLETON, AND CLIFFDELL
244 AM PST THU DEC 18 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
* WHAT...SNOW AND FREEZING RAIN. ADDITIONAL SNOW ACCUMULATIONS
BETWEEN 2 AND 6 INCHES MOSTLY THROUGH THURSDAY MORNING. FREEZING
RAIN UP TO A TENTH OF AN INCH THIS AFTERNOON.
* WHERE...LOWER SLOPES OF THE EASTERN WASHINGTON CASCADES CREST.
* WHEN...UNTIL 4 PM PST THIS AFTERNOON.
* IMPACTS...TRAVEL COULD BE DIFFICULT DUE TO PERIODS OF MODERATE TO
HEAVY SNOW.
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.
ORZ502-WAZ030-181800-
/O.CON.KPDT.WW.Y.0027.251218T1200Z-251219T0000Z/
NORTHERN BLUE MOUNTAINS OF OREGON-NORTHWEST BLUE MOUNTAINS-
INCLUDING THE CITIES OF TOLLGATE, MEACHAM, AND SKI BLUEWOOD
RESORT
244 AM PST THU DEC 18 2025
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS
AFTERNOON...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS UP TO 7 INCHES.
WINDS GUSTING 20 TO 30 MPH.
* WHERE...IN OREGON, NORTHERN BLUE MOUNTAINS OF OREGON. IN
WASHINGTON, NORTHWEST BLUE MOUNTAINS.
* WHEN...UNTIL 4 PM PST THIS AFTERNOON.
* IMPACTS...TRAVEL COULD BE DIFFICULT DUE TO PERIODS OF MODERATE TO
HEAVY SNOW.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. IN OREGON, THE LATEST
ROAD CONDITIONS CAN BE OBTAINED BY VISITING TRIPCHECK.COM ONLINE, OR
BY CALLING 5 1 1. IN WASHINGTON, THE LATEST ROAD CONDITIONS CAN BE
OBTAINED BY VISITING THE WEBSITE WSDOT.WA.GOV/TRAVEL.
MF
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