118  
FNUS73 KARX 130941  
FWSARX  
 
SPOT FORECAST FOR MEDFORD FARM UNIT 4 RX...US FOREST SERVCE  
NATIONAL WEATHER SERVICE LA CROSSE WI  
441 AM CDT SAT APR 13 2024  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON APRIL 13.  
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
 
SMOKE DISPERSAL WILL BE FAIR AROUND IGNITION TIME  
BUT WILL QUICKLY IMPROVE TO EXCELLENT THIS AFTERNOON AS WINDS AND  
MIXING HEIGHTS INCREASE. OTHERWISE A DRY AND WARM DAY IS ON TAP  
WITH MOSTLY SUNNY SKIES AND AFTERNOON MINIMUM RH AROUND 30%.  
WINDS WILL BECOME BREEZY OUT OF THE SOUTH TO SOUTHWEST, GUSTING  
20 TO 25 MPH. SMALL CHANCE (20%) FOR A SPRINKLE OR BRIEF, LIGHT  
SHOWER GRAZING THE AREA THIS EVENING AS A COLD FRONT PUSHES  
THROUGH. THIS WILL BRING A SHIFT TO NORTHWEST WINDS ON SUNDAY (NOT  
AS BREEZY), BUT OTHERWISE ANOTHER WARM AND DRY DAY ON TAP.  
   
TODAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT).  
CWR.................0 PERCENT.  
TEMPERATURE.........53 AT IGNITION...MAX 68.  
RH..................46 PERCENT AT IGNITION...MIN 30 PERCENT.  
WIND (20 FT)........WINDS SOUTH AT 6 MPH AT IGNITION...OTHERWISE  
LIGHT WINDS BECOMING SOUTH 5 TO 12 MPH WITH  
GUSTS TO AROUND 22 MPH IN THE LATE MORNING AND  
AFTERNOON.  
MIXING HEIGHT.......1800 FT AGL INCREASING TO 2500 FT AGL AT  
IGNITION...OTHERWISE 4000 FT AGL LATE IN THE  
MORNING.  
TRANSPORT WINDS.....SOUTH 3 TO 12 MPH INCREASING TO SOUTHWEST 24 TO  
26 MPH.  
SMOKE DISPERSAL.....FAIR /25200 KNOT-FT/ AT IGNITION.  
MAX...EXCELLENT /90800 KNOT-FT/.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH AT IGNITION...MAX 4.  
 
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........4 5 15 20 35 18 30  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0  
TEMP............53 57 61 63 66 67 68  
RH..............46 40 35 34 30 30 32  
20 FT WIND DIR..S S S S S S S  
20 FT WIND SPD..6 8 9 10 12 12 12  
20 FT WIND GUST.12 13 14 16 20 22 21  
MIX HGT (KFT)...2.5 2.8 3.2 3.5 3.7 4.0 3.9  
TRANSP WIND DIR.SW S S S S SW SW  
TRANSP WIND SPD.12 13 15 18 22 24 26  
HAINES INDEX....4 4 4 4 4 4 4  
SDSPL KT-FT/100025 31 41 55 71 83 91  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT) THEN BECOMING  
CLEAR (0-10 PERCENT). SLIGHT CHANCE OF RAIN  
SHOWERS LATE IN THE EVENING.  
CWR.................10 PERCENT INCREASING TO 20 PERCENT LATE IN THE  
EVENING, THEN DECREASING TO 10 PERCENT  
OVERNIGHT.  
TEMPERATURE.........MIN 44.  
RH..................MAX 86 PERCENT.  
WIND (20 FT)........SOUTH WINDS 7 TO 11 MPH WITH GUSTS TO AROUND 21  
MPH SHIFTING TO THE NORTHWEST 5 TO 6 MPH  
OVERNIGHT.  
MIXING HEIGHT.......3000 FT AGL DECREASING TO 300 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 23 MPH DECREASING TO 10 TO 15  
MPH IN THE EVENING AND OVERNIGHT, THEN SHIFTING  
TO THE NORTH 9 TO 10 MPH OVERNIGHT.  
SMOKE DISPERSAL.....GOOD (59100 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (2700 KNOT-FT) LATE IN THE  
NIGHT.  
HAINES INDEX........4 TO 5 OR LOW TO MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........32 35 36 22 5 3  
WEATHER COV..... S CHC S CHC  
WEATHER TYPE....NONE NONE RNSHWR RNSHWR NONE NONE  
TSTM COV........  
CWR.............0 10 20 20 10 10  
TEMP............68 62 59 55 52 48  
RH..............33 46 55 72 77 86  
20 FT WIND......S 11 S 8 S 8 SW 8 NW 6 N 5  
20 FT WIND GUST.21 15 16 13 11 8  
MIX HGT (FT)....3000 700 600 500 400 300  
TRANSPORT WIND..SW 23 S 12 S 15 SW 14 NW 10 N 9  
HAINES INDEX....4 4 4 4 5 5  
SDSPL KT-FT/100059 7 7 6 4 3  
   
SUNDAY
 
 
SKY/WEATHER.........SUNNY (0-10 PERCENT).  
CWR.................0 PERCENT.  
TEMPERATURE.........MAX 67.  
RH..................MIN 30 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 5 TO 11 MPH.  
MIXING HEIGHT.......1900 FT AGL INCREASING TO 6800 FT AGL.  
TRANSPORT WINDS.....NORTH 9 TO 17 MPH SHIFTING TO THE NORTHWEST 16  
TO 23 MPH LATE IN THE MORNING.  
SMOKE DISPERSAL.....POOR (3100 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO EXCELLENT (121400 KNOT-FT) IN THE  
AFTERNOON.  
HAINES INDEX........4 TO 5 OR LOW TO MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........4 4 4 4 5 7  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CWR.............0 0 0 0 0 0  
TEMP............45 48 58 63 66 67  
RH..............86 80 57 43 33 30  
20 FT WIND......NW 6 NW 7 NW 8 NW 10 NW 11 NW 10  
20 FT WIND GUST.9 11 14 16 18 16  
MIX HGT (FT)....400 600 1900 4900 5900 6800  
TRANSPORT WIND..N 9 NW 10 N 17 NW 21 NW 23 NW 20  
HAINES INDEX....5 4 4 4 4 4  
SDSPL KT-FT/10003 5 29 89 119 116  
 

 
FORECASTER...MK  
REQUESTED BY...RXB2-T  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2410566.0/ARX  
.DELDT 04/13/24  
.FORMATTERVERSION 2.0.0  
.EMAIL JOSEPH.F.EUCOLONO@USDA.GOV,JOAN.LAWRANCE@USDA.GOV  
 
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