528  
FNUS75 KPSR 151838  
FWSPSR  
 
SPOT FORECAST FOR TONTO BASIN MISC. PILES RX...USFS  
NATIONAL WEATHER SERVICE PHOENIX AZ  
1138 AM MST WED OCT 15 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 MST ON OCTOBER 16.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
 
DRY CONDITIONS AND CLEAR SKIES WILL PREVAIL THROUGHOUT THE DAY  
THURSDAY. WINDS WILL GENERALLY BE LIGHT UNDER 15 MPH AND FOLLOW  
THE TYPICAL DIURNAL TREND. AFTERNOON MINRHS WILL DROP IN THE MID  
TO UPPER 20S WITH GOOD OVERNIGHT RECOVERIES OF OVER 50%.  
 
NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND  
IN THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.  
   
THURSDAY  
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........23-28 PERCENT.  
WIND (20 FT)........NORTH WINDS 5 TO 10 MPH SHIFTING TO THE SOUTH  
LATE IN THE MORNING, THEN SHIFTING TO THE  
SOUTHWEST 5 TO 11 MPH LATE IN THE AFTERNOON.  
 
TIME (MST) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........4 5 5 5 6 11 8 4 8 5  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0  
TEMP............53 59 63 67 70 74 75 76 77 75  
RH..............70 57 46 40 35 28 27 26 25 27  
20 FT WIND DIR..N N N SE SE S S SW SW W  
20 FT WIND SPD..3 2 1 1 1 2 2 3 5 6  
20 FT WIND GUST.8 6 5 3 5 6 8 10 12 13  
   
THURSDAY NIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR (0-10 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....AROUND 52.  
MAX HUMIDITY........54-59 PERCENT.  
WIND (20 FT)........WEST WINDS 5 TO 10 MPH SHIFTING TO THE  
NORTHEAST LATE IN THE EVENING.  
 
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........6 6 10 8 5 3 3 3 4 4 5 5  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............74 71 68 66 64 62 61 60 59 57 56 54  
RH..............28 31 33 36 38 41 42 42 42 42 43 44  
20 FT WIND DIR..SW W NW NW N N N NE NE NE NE NE  
20 FT WIND SPD..5 5 6 6 5 5 5 5 5 5 3 3  
20 FT WIND GUST.12 12 12 12 10 10 10 9 9 9 8 8  
   
FRIDAY  
 
SKY/WEATHER.........SUNNY (0-10 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........22-27 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS 5 TO 10 MPH SHIFTING TO THE  
SOUTH LATE IN THE MORNING, THEN SHIFTING TO THE  
SOUTHWEST IN THE AFTERNOON.  
 
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........5 4 3 2 2 2 3 3 4 3 2 2  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............54 53 52 58 63 68 71 74 77 76 76 75  
RH..............47 51 56 47 40 33 30 26 24 25 26 27  
20 FT WIND DIR..NE NE NE E SE S S SW SW SW SW SW  
20 FT WIND SPD..3 3 3 3 2 2 2 2 2 3 3 5  
20 FT WIND GUST.8 8 8 7 6 5 6 7 9 10 12 13  
 
 
FORECASTER...GL  
REQUESTED BY...JUSTIN HENDERSON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2523678.0/PSR  
.DELDT 10/15/25  
.FORMATTERVERSION 2.0.0  
.EMAIL JUSTIN.HENDERSON@USDA.GOV  
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