887  
FNUS76 KPDT 231443  
FWSPDT  
 
SPOT FORECAST FOR MICROWAVE TOWER...OREGON STATE FIRE MARSHAL  
NATIONAL WEATHER SERVICE PENDLETON OR  
743 AM PDT TUE JUL 23 2024  
 
FORECAST IS BASED ON FORECAST START TIME OF 0800 PDT ON JULY 23.  
***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS***  
***WINDS ARE 20 FOOT 10-MINUTE AVERAGES***  
***CWR-CHANCE OF WETTING RAIN 0.10 OR GREATER***  
 
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE  
CONTACT OUR OFFICE AT (541) 276-8134.  
   
DISCUSSION
 
CLEAR SKIES WITH WEST WINDS 5 TO 10 MPH EXPECTED  
THROUGH TONIGHT WITH WINDS INCREASING TO 10 TO 15 MPH WITH GUSTS  
TO 30 MPH WEDNESDAY AFTERNOON. RHS 25-30 PERCENT TODAY WITH GOOD  
RECOVERIES OVERNIGHT. HIGHER RHS WEDNESDAY WITH A MARINE PUSH  
THROUGH THE COLUMBIA GORGE AS A TROUGH PUSHES THE PERSISTENT  
RIDGE OFF TO THE EAST. TEMPERATURES TO REMAIN IN THE MID TO  
UPPER 80S THROUGH THE WEEK WITH BREEZY WINDS AGAIN ON THURSDAY.  
DAYTIME RHS WILL BE IN THE 30S WITH GOOD OVERNIGHT RECOVERIES.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (0-10 PERCENT).  
CWR.................0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....86-88.  
MIN HUMIDITY........24-29 PERCENT.  
WIND (20 FT)........WEST WINDS 5 TO 9 MPH.  
RIDGETOP WIND.......WEST WINDS 6 TO 11 MPH.  
MIXING HEIGHT.......4400 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....WEST WINDS 6 TO 11 MPH INCREASING TO 10 TO  
15 MPH IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
 
TIME (PDT) 8 AM 10 AM NOON 2 PM 4 PM 6 PM  
TEMP............58 66 74 82 86 85  
RH..............71 55 43 32 29 31  
20 FT WIND......W 8 W 8 W 8 W 8 W 8 W 8  
20 FT WIND GUST.12 12 11 14 14 14  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (0-10 PERCENT).  
CWR.................0 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....54-58.  
MAX HUMIDITY........77-82 PERCENT.  
WIND (20 FT)........WEST WINDS 4 TO 8 MPH.  
RIDGETOP WIND.......WEST WINDS 5 TO 10 MPH.  
MIXING HEIGHT.......1400 FT AGL.  
TRANSPORT WINDS.....WEST WINDS 13 TO 15 MPH.  
HAINES INDEX........4 TO 5 OR LOW TO MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
CWR.................0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....84-87.  
MIN HUMIDITY........33-38 PERCENT.  
WIND (20 FT)........WEST WINDS 5 TO 8 MPH INCREASING TO 10 TO 15  
MPH IN THE AFTERNOON. GUSTS UP TO 30 MPH IN  
THE AFTERNOON.  
RIDGETOP WIND.......WEST WINDS 6 TO 11 MPH INCREASING TO 12 TO 18  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......4600 FT AGL IN THE AFTERNOON.  
TRANSPORT WINDS.....WEST WINDS 14 TO 22 MPH INCREASING TO 10 TO 27  
MP LATE IN THE AFTERNOON.  
HAINES INDEX........3 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 

 
FORECASTER...PERRY  
REQUESTED BY...ROB ROOT  
TYPE OF REQUEST...WILDFIRE  
.TAG 2418732.0/PDT  
.DELDT 07/23/24  
.FORMATTERVERSION 2.0.0  
.EMAIL ROBERT.ROOT@PORTLANDOREGON.GOV  
 
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