682  
FNUS76 KPQR 072053  
FWSPQR  
 
SPOT FORECAST FOR DORENA PILE BURN...USFS  
NATIONAL WEATHER SERVICE PORTLAND OR  
1253 PM PST SUN DEC 7 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0700 PST ON DECEMBER 08.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
A FRONTAL SYSTEM WILL BE APPROACHING THE BURN SITE  
MONDAY WITH LIGHT RAIN AND SOUTH TO SOUTHWEST WINDS LESS THAN 10  
MPH DURING THE DAY. MONDAY NIGHT, RAIN INCREASES IN INTENSITY,  
WITH MODERATE TO HEAVY RAIN THROUGH TUESDAY. WINDS INCREASE  
MONDAY NIGHT WITH SOUTH WINDS UP TO 10 MPH AND GUSTS UP TO 20  
MPH AT TIMES THROUGH TUESDAY.  
   
MONDAY
 
 
SKY/WEATHER.........CLOUDY WITH LIGHT RAIN.  
CWR.................15 PERCENT INCREASING TO 50 PERCENT LATE IN THE  
AFTERNOON.  
MAX TEMPERATURE.....AROUND 59.  
MIN HUMIDITY........88 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTH WINDS 5 TO 8 MPH SHIFTING TO THE SOUTHWEST  
IN THE AFTERNOON.  
MIXING HEIGHT.......2200 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 13 TO 18 MPH.  
 
TIME (PST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........91 86 94 92 89 87 88 90 87 92 92  
WEATHER COV.....DEF DEF DEF LKY LKY LKY LKY LKY LKY DEF DEF  
WEATHER TYPE....RN RN RN RN RN RN RN RN RN RN RN  
TSTM COV........  
CWR.............20 20 20 20 20 20 20 20 20 50 50  
TEMP............50 50 50 51 53 55 57 57 58 57 56  
RH..............95 98 99 100 99 95 92 87 86 88 87  
20 FT WIND DIR..S S S S SW SW SW SW SW SW SW  
20 FT WIND SPD..6 6 6 6 7 7 7 6 6 6 6  
20 FT WIND GUST.10 11 12 13 14 14 14 14 14 14 14  
MIX HGT (KFT)...1.2 1.4 1.5 1.7 2.1 2.2 2.1 2.0 2.0 1.9 1.7  
TRANSP WIND DIR.S SW SW SW SW SW SW SW SW SW SW  
TRANSP WIND SPD.13 13 13 15 17 18 16 14 14 14 13  
   
MONDAY NIGHT
 
 
SKY/WEATHER.........CLOUDY. RAIN.  
CWR.................76 PERCENT INCREASING TO 90 PERCENT AFTER 3 AM.  
MIN TEMPERATURE.....AROUND 50.  
MAX HUMIDITY........100 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTHWEST WINDS 6 TO 10 MPH. GUSTS UP TO 21 MPH  
IN THE EVENING AND OVERNIGHT.  
MIXING HEIGHT.......1200 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 14 TO 18 MPH.  
 
TIME (PST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........92 92 92 92 92 92 92 92 92 92 96 96  
WEATHER COV.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF  
WEATHER TYPE....RN RN RN RN RN RN RN RN RN RN RN RN  
TSTM COV........  
CWR.............80 80 80 80 80 80 80 80 80 80 90 90  
TEMP............55 52 52 52 52 52 51 51 51 51 51 51  
RH..............89 92 93 92 90 90 91 92 92 92 92 93  
20 FT WIND DIR..SW SW SW SW S S S S S S S S  
20 FT WIND SPD..6 6 6 6 8 8 8 7 7 7 6 6  
20 FT WIND GUST.14 16 16 16 17 17 17 16 16 16 14 14  
MIX HGT (KFT)...1.7 1.2 1.2 1.3 1.4 1.4 1.4 1.4 1.4 1.3 1.4 1.4  
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW SW SW SW  
TRANSP WIND SPD.14 14 14 15 16 17 18 18 18 18 18 18  
   
TUESDAY
 
 
SKY/WEATHER.........CLOUDY. RAIN.  
CWR.................90 PERCENT.  
MAX TEMPERATURE.....AROUND 58.  
MIN HUMIDITY........94 PERCENT.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTH WINDS AROUND 6 MPH. GUSTS UP TO 20 MPH  
EARLY IN THE AFTERNOON.  
MIXING HEIGHT.......1900 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 12 TO 17 MPH.  
 
TIME (PST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........96 96 96 96 98 98 98 98 98 98 99 99  
WEATHER COV.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF  
WEATHER TYPE....RN RN RN RN RN RN RN RN RN RN RN RN  
TSTM COV........  
CWR.............90 90 90 90 90 90 90 90 90 90 90 90  
TEMP............51 51 51 51 52 53 54 55 56 56 56 56  
RH..............94 96 98 99 100 100 100 99 98 97 96 96  
20 FT WIND DIR..S S S S S S S S S S S S  
20 FT WIND SPD..6 6 6 6 6 6 6 6 6 6 6 6  
20 FT WIND GUST.14 14 14 14 14 14 14 16 16 16 16 16  
MIX HGT (KFT)...1.5 1.5 1.6 1.7 1.8 1.9 1.9 1.9 1.8 1.8 1.6 1.4  
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW SW SW SW  
TRANSP WIND SPD.17 17 17 17 17 17 17 16 15 13 12 12  
 

 
FORECASTER...HEC  
REQUESTED BY...FABIAN GARZA  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2526983.0/PQR  
.DELDT 12/07/25  
.FORMATTERVERSION 2.0.0  
.EMAIL FABIAN.GARZA@USDA.GOV,JOSHUA.D.COLLINS@USDA.GOV,STACYSTACY.AINSLIE@USDA.GOV  
 
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