295  
FNUS73 KARX 121135  
FWSARX  
 
SPOT FORECAST FOR PRESTON NORTH SUBUNIT BRAVO...THE NATURE CONSERVANCY  
NATIONAL WEATHER SERVICE LA CROSSE WI  
635 AM CDT MON OCT 12 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON OCTOBER 12.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (608) 784-8292 IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION  
 
WIND GUSTS UP TO 20 MPH ARE EXPECTED TODAY WITH DIRECTIONS,  
INITIALLY OUT OF THE SOUTHWEST, SLOWLY TURNING COUNTER-CLOCKWISE  
THROUGH THE AFTERNOON TO OUT OF THE SOUTH AROUND SUNSET. WINDS  
WILL THEN BEGIN TO TURN CLOCKWISE, SLOWLY BECOMING OUT OF THE  
NORTHWEST BY SUNRISE TUESDAY. STRONGEST GUSTS TUESDAY WILL OCCUR  
IN THE MORNING, WITH SPEEDS OUT OF THE NORTHWEST TO 20-25 MPH.  
HUMIDITY VALUES BOTH DURING THE DAY TODAY AND TUESDAY WILL DROP  
INTO THE 40-50 PERCENT RANGE. ONLY FAIR TO GOOD SMOKE VENTILATION  
IS EXPECTED TODAY.  
 
AS FOR UNCERTAINTIES IN THE FORECAST, THERE IS A SMALL (10%) FOR  
A VERY LIGHT SHOWER TO OCCUR AT OR NEAR THE FIRE SITE BETWEEN 4PM  
AND 10PM THIS EVENING. IN THE OFF CHANCE THIS DOES OCCUR, BRIEF  
ERRATIC WIND DIRECTIONS WOULD OCCUR.  
   
REST OF TODAY  
 
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF THUNDER...8 PERCENT.  
TEMPERATURE.........74 AT IGNITION...MAX 84.  
RH..................60 PERCENT AT IGNITION...MIN 51 PERCENT.  
WIND (20 FT)........WINDS SOUTHWEST AT 8 MPH AT  
IGNITION...OTHERWISE SOUTHWEST WINDS 8 TO 9  
MPH. GUSTS UP TO 20 MPH LATE IN THE MORNING.  
MIXING HEIGHT.......1300 FT AGL AT IGNITION...OTHERWISE 3100 FT  
AGL.  
TRANSPORT WINDS.....SOUTHWEST 13 TO 16 MPH.  
SMOKE DISPERSAL.....FAIR /17000 KNOT-FT/ AT IGNITION. MAX...GOOD  
/43000 KNOT-FT/.  
 
TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........14 14 15 15 23 36 31 43  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 10 10 10  
CHC OF THDR (%).0 0 0 0 0 10 10 10  
TEMP............74 77 79 81 83 83 84 82  
RH..............60 56 54 53 51 51 52 56  
20 FT WIND DIR..SW SW SW SW SW SW SW S  
20 FT WIND SPD..8 8 8 8 9 9 9 8  
20 FT WIND GUST.18 16 14 14 14 15 15 16  
MIX HGT (KFT)...1.3 1.8 2.4 2.7 2.9 3.0 3.1 1.9  
TRANSP WIND DIR.SW W SW SW SW S S S  
TRANSP WIND SPD.15 14 14 13 15 16 16 15  
SDSPL KT-FT/100017 21 29 30 38 43 43 25  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLOUDY (55-65 PERCENT) THEN BECOMING  
PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (55-65 PERCENT) THEN BECOMING  
PARTLY CLOUDY (40-50 PERCENT).  
CWR.................10 PERCENT.  
CHANCE OF THUNDER...13 PERCENT.  
TEMPERATURE.........MIN 61.  
RH..................MAX 83 PERCENT.  
WIND (20 FT)........SOUTH WINDS 5 TO 7 MPH WITH GUSTS TO AROUND 18  
MPH SHIFTING TO THE WEST WITH GUSTS TO AROUND  
23 MPH EARLY IN THE MORNING.  
MIXING HEIGHT.......400 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 14 MPH SHIFTING TO THE WEST 15  
TO 18 MPH OVERNIGHT.  
SMOKE DISPERSAL.....GOOD (34800 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (4000 KNOT-FT) LATE IN THE  
NIGHT.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........56 59 49 46 44 60 46 41 43 45 43 40  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............10 10 10 10 10 10 10 10 0 0 0 0  
CHC OF THDR (%).10 10 10 10 10 10 10 10 0 0 0 0  
TEMP............80 78 75 72 71 71 70 70 69 68 67 65  
RH..............61 64 70 75 78 75 78 79 79 79 79 83  
20 FT WIND DIR..S S S S S SW SW SW W W W W  
20 FT WIND SPD..6 6 5 6 7 6 6 7 8 8 9 10  
20 FT WIND GUST.14 13 13 16 18 14 14 16 22 22 23 23  
MIX HGT (KFT)...0.8 0.5 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.6 0.5 2.2  
TRANSP WIND DIR.S S S S SW SW SW W W W W NW  
TRANSP WIND SPD.12 10 10 13 13 13 14 15 15 16 16 18  
SDSPL KT-FT/10008 5 4 5 5 5 6 6 6 9 7 35  
   
TUESDAY  
 
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF THUNDER...1 PERCENT.  
TEMPERATURE.........MAX 71.  
RH..................MIN 56 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 7 TO 11 MPH. GUSTS UP TO 24 MPH  
IN THE MORNING.  
MIXING HEIGHT.......2700 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 10 TO 18 MPH.  
SMOKE DISPERSAL.....FAIR (19600 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO GOOD (35200 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........42 51 59 57 48 30 24 17 7 3 1 8  
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............64 62 61 61 62 64 66 68 70 70 71 69  
RH..............85 81 83 83 77 74 67 63 59 59 58 56  
20 FT WIND DIR..W W NW NW NW NW NW NW NW NW NW NW  
20 FT WIND SPD..10 11 11 11 11 10 9 9 9 9 8 7  
20 FT WIND GUST.22 21 21 20 18 15 14 14 14 14 13 12  
MIX HGT (KFT)...2.1 1.3 1.7 1.7 1.9 2.2 2.4 2.5 2.5 2.7 2.6 2.2  
TRANSP WIND DIR.NW W NW NW W W W W NW W W NW  
TRANSP WIND SPD.18 17 17 18 17 16 16 15 15 15 14 10  
SDSPL KT-FT/100034 20 26 27 28 30 33 32 33 35 31 20  
 
 
FORECASTER...AF  
REQUESTED BY...JOHN SCHWINGEL  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2623606.0/ARX  
.DELDT 10/12/26  
.FORMATTERVERSION 2.0.0  
.EMAIL JOHN.SCHWINGEL@TNC.ORG  
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