028  
WWUS76 KPDT 080450  
NPWPDT  
 
URGENT - WEATHER MESSAGE  
NATIONAL WEATHER SERVICE PENDLETON OR  
850 PM PST WED DEC 7 2022  
 
ORZ044-507-WAZ026>029-081500-  
/O.CON.KPDT.ZF.Y.0022.000000T0000Z-221208T1500Z/  
LOWER COLUMBIA BASIN OF OREGON-  
FOOTHILLS OF THE NORTHERN BLUE MOUNTAINS OF OREGON-  
KITTITAS VALLEY-YAKIMA VALLEY-LOWER COLUMBIA BASIN OF WASHINGTON-  
FOOTHILLS OF THE BLUE MOUNTAINS OF WASHINGTON-  
INCLUDING THE CITIES OF BOARDMAN, HERMISTON, IONE, PENDLETON,  
PILOT ROCK, ELLENSBURG, THORP, NACHES, SUNNYSIDE, TOPPENISH,  
YAKIMA, CONNELL, PROSSER, TRI-CITIES, DAYTON, WAITSBURG,  
AND WALLA WALLA  
850 PM PST WED DEC 7 2022  
 
...FREEZING FOG ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST  
THURSDAY...  
 
* WHAT...VISIBILITY ONE QUARTER MILE OR LESS IN FREEZING FOG.  
 
* WHERE...IN OREGON, LOWER COLUMBIA BASIN. IN WASHINGTON, YAKIMA  
VALLEY AND LOWER COLUMBIA BASIN.  
 
* WHEN...UNTIL 7 AM PST THURSDAY.  
 
* IMPACTS...HAZARDOUS DRIVING CONDITIONS DUE TO LOW VISIBILITY  
AND POTENTIAL FROST ON BRIDGES.  
 
* ADDITIONAL DETAILS...DENSE FREEZING FOG WILL MOSTLY BE IN THE  
HIGHER ELEVATIONS IN THE ADVISORY AREA SUCH AS THE HORSE HEAVEN  
HILLS, AND THE HIGHER TERRAIN SURROUNDING THE YAKIMA VALLEY, IN  
THE LOWER COLUMBIA BASIN AND THE FOOTHILLS OF THE BLUE  
MOUNTAINS. HOWEVER, SOME LOWER ELEVATION LOCATIONS MAY ALSO HAVE  
DENSE FREEZING FOG.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
IF DRIVING, SLOW DOWN, USE YOUR HEADLIGHTS, AND LEAVE PLENTY OF  
DISTANCE AHEAD OF YOU. ALSO, BE ALERT FOR FROST ON BRIDGE DECKS  
CAUSING SLIPPERY ROADS.  
 

 
 

 
 
FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE VISIT  
HTTPS://WEATHER.GOV/PENDLETON  
 
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