638  
FNUS76 KPDT 071150  
FWSPDT  
 
SPOT FORECAST FOR BOWMAN CREEK RX...WASHINGTON DNR  
NATIONAL WEATHER SERVICE PENDLETON OR  
450 AM PDT TUE OCT 7 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 PDT ON OCTOBER 07.  
***THUNDERSTORMS IMPLY GUSTY AND ERRATIC WINDS***  
***WINDS ARE 20 FOOT 10-MINUTE AVERAGES***  
***CWR-CHANCE OF WETTING RAIN 0.10 OR GREATER***  
***VENTILATION INDEX IS DERIVED FROM THE  
TRANSPORT WIND MULTIPLIED BY THE MIXING  
HEIGHT IN 100'S OF FEET. INDEX CATEGORIES  
ARE A GENERALIZED INDICATOR ONLY.***  
 
IF YOU HAVE QUESTIONS OR CONCERNS WITH THIS FORECAST, PLEASE  
CONTACT OUR OFFICE AT (541) 276-8134.  
   
DISCUSSION  
DRY AND WARMER CONDITIONS OVER THE FIRE AREA TODAY  
AS THE RIDGE SETTLES OVER. WINDS TODAY WILL BE SLIGHTLY VARIABLE  
REMAINING BELOW 10 MPH. DAYTIME RHS WILL BE IN THE LOW TO MID 20%  
WITH UPPER 80 TO LOW 90% RECOVERIES. A FRONTAL SYSTEM WILL BRING  
COOLER TEMPERATURES AND A SHIFT IN WINDS. WINDS WILL BE FROM THE  
WEST 5 TO 10 IN THE MORNING AND ONCE THE INVERSION BREAKS AROUND  
11 AM, WINDS WILL INCREASE TO 10 TO 15 MPH AND DAYTIME RHS IN THE  
LOW TO MID 30%.  
   
TODAY  
 
SKY/WEATHER.........SUNNY (0-10 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....73-76.  
MIN HUMIDITY........20-25 PERCENT.  
WIND (20 FT)........EAST WINDS 5 TO 7 MPH SHIFTING TO THE SOUTHWEST  
5 TO 6 MPH AFTER 11 AM THEN SOUTH AFTER 2 PM.  
RIDGETOP WIND.......EAST WINDS 6 TO 8 MPH SHIFTING TO THE SOUTHWEST  
6 TO 7 MPH AFTER 11 AM THEN SOUTH AFTER 2 PM.  
MIXING HEIGHT.......3400 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 6 TO 8 MPH SHIFTING TO THE SOUTH 5 TO  
7 MPH LATE IN THE AFTERNOON.  
VENTILATION INDEX...POOR (40) INCREASING TO POOR (180) IN THE  
AFTERNOON.  
 
TIME (PDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM  
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............47 54 61 65 69 70 72 73 71 68 64 60  
RH..............55 46 36 32 28 25 25 23 25 28 33 36  
20 FT WIND DIR..E E SE SE SE S S S SW SW SW NW  
20 FT WIND SPD..5 5 6 6 6 7 7 7 6 6 6 5  
20 FT WIND GUST.6 6 7 7 7 8 8 8 8 8 8 6  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MIN TEMPERATURE.....39-42.  
MAX HUMIDITY........87-92 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH SHIFTING TO THE  
NORTHWEST AFTER 8 PM, THEN SHIFTING TO THE  
WEST OVERNIGHT.  
RIDGETOP WIND.......SOUTHWEST WINDS 6 TO 8 MPH SHIFTING TO THE  
NORTHWEST AFTER 8 PM, THEN SHIFTING TO THE  
WEST OVERNIGHT.  
MIXING HEIGHT.......600 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 5 MPH SHIFTING TO THE WEST 5  
TO 8 MPH EARLY IN THE EVENING.  
VENTILATION INDEX...POOR (40).  
   
WEDNESDAY  
 
SKY/WEATHER.........SUNNY (15-25 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF LIGHTNING.0 PERCENT.  
MAX TEMPERATURE.....65-68.  
MIN HUMIDITY........32-37 PERCENT.  
WIND (20 FT)........WEST WINDS 5 TO 10 MPH INCREASING TO 15 MPH  
AFTER 11 AM.  
RIDGETOP WIND.......WEST WINDS 7 TO 12 MPH INCREASING TO 17 MPH  
AFTER 11 PM.  
MIXING HEIGHT.......3200 FT AGL.  
TRANSPORT WINDS.....WEST 7 TO 15 MPH INCREASING TO AROUND 18 MPH  
LATE IN THE AFTERNOON.  
VENTILATION INDEX...POOR (50) INCREASING TO FAIR (370) IN THE  
AFTERNOON.  
 
 
FORECASTER...BENNESE  
REQUESTED BY...ADAM LIEBERG  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2522731.6/PDT  
.DELDT 10/06725  
.FORMATTERVERSION 2.0.0  
.EMAIL ALIEBERG@COLUMBIALANDTRUST.ORG  
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