003  
WWUS86 KPDT 171536  
RFWPDT  
 
URGENT - FIRE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE PENDLETON OR  
836 AM PDT TUE JUL 17 2018  
   
..HOT WITH GUSTY WINDS AND LOW HUMIDITY TODAY AND WEDNESDAY
 
 
.WINDS WILL INCREASE ACROSS SOUTH CENTRAL WASHINGTON AND CENTRAL  
AND NORTH CENTRAL OREGON THIS AFTERNOON AND EVENING. ALTHOUGH  
WINDS WILL DIMINISH OVERNIGHT...WINDS WILL INCREASE AGAIN DURING  
THE DAY ON WEDNESDAY. THE COMBINATION OF GUSTY WINDS...LOW  
HUMIDITY...AND VERY DRY VEGETATION WILL THREATEN AREAS WITH  
EXTREME FIRE BEHAVIOR.  
 
ORZ639-WAZ639-172345-  
/O.CON.KPDT.FW.W.0007.180717T2000Z-180719T0300Z/  
EAST SLOPES OF THE NORTHERN OREGON CASCADES-  
EAST SLOPES OF THE SOUTHERN WASHINGTON CASCADES-  
836 AM PDT TUE JUL 17 2018  
 
...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO  
8 PM PDT WEDNESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE  
WEATHER ZONE 639...  
 
* AFFECTED AREA...WASHINGTON AND OREGON FIRE ZONE 639 COVERING  
THE SIMCOE HIGHLANDS...THE EASTERN COLUMBIA RIVER GORGE...AND  
THE EAST SLOPES OF THE MOUNT HOOD NATIONAL FOREST.  
 
* TIMING...WINDS WILL INCREASE THIS AFTERNOON AND BECOME WINDY IN  
MANY AREAS DURING THE EVENING. ALTHOUGH WINDS WILL DECREASE  
OVERNIGHT...ANOTHER DAY OF BREEZY TO WINDY CONDITIONS CAN BE  
EXPECTED ON WEDNESDAY.  
 
* WIND...WEST WINDS 15 TO 25 MPH WITH LOCAL GUSTS TO 35 MPH.  
 
* HUMIDITY...10 TO 20 PERCENT THIS AFTERNOON AND 15 TO 25 PERCENT  
ON WEDNESDAY.  
 
 
* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.  
OUTDOOR BURNING IS NOT RECOMMENDED.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF  
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN  
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.  
 

 
 

 
 
ORZ610-640-641-WAZ675-172345-  
/O.CON.KPDT.FW.W.0007.180717T2300Z-180719T0300Z/  
EAST SLOPES OF CENTRAL OREGON CASCADES-  
CENTRAL MOUNTAINS OF OREGON-LOWER COLUMBIA BASIN OF OREGON-  
EASTERN WASHINGTON SOUTHERN COLUMBIA BASIN-  
836 AM PDT TUE JUL 17 2018  
 
...RED FLAG WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO  
8 PM PDT WEDNESDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE  
WEATHER ZONES 610, 640, 641, AND 675...  
 
* AFFECTED AREA...IN WASHINGTON...FIRE ZONE 675 COVERING THE  
SOUTHERN KITTITAS AND SOUTHERN YAKIMA VALLEYS AS WELL AS THE  
HANFORD DISTRICT. IN OREGON...FIRE ZONES 610, 640,AND 641  
COVERING THE EAST SLOPES OF THE OREGON CASCADES...CENTRAL AND  
NORTH CENTRAL OREGON...AND THE LOWER COLUMBIA BASIN.  
 
* TIMING...WINDS WILL INCREASE LATE THIS AFTERNOON AND BECOME  
BREEZY DURING THE EVENING HOURS. ALTHOUGH WINDS WILL DIMINISH  
OVERNIGHT...WINDS WILL INCREASE AGAIN WEDNESDAY AFTERNOON AND  
EVENING.  
 
* WIND...WEST TO NORTHWEST WIND 10 TO 20 MPH WITH LOCAL GUSTS  
TO 30 MPH.  
 
* HUMIDITY...5 TO 15 PERCENT THIS AFTERNOON. 10 TO 20 PERCENT  
WEDNESDAY.  
 
* IMPACTS...ANY FIRES THAT DEVELOP WILL LIKELY SPREAD RAPIDLY.  
OUTDOOR BURNING IS NOT RECOMMENDED.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  
ARE EITHER OCCURRING NOW....OR WILL SHORTLY. A COMBINATION OF  
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN  
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.  
 

 
 

 
 
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