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FNUS73 KMKX 241426

FWSMKX



Spot Forecast for Main Farm Extended Rx Burn...WDNR

National Weather Service Milwaukee/Sullivan WI

926 AM CDT Wed Apr 24 2024



Forecast is based on ignition time of 0800 CDT on April 25. 



Please contact the National Weather Service if conditions become 

unrepresentative or if you have questions/concerns about this forecast.



.DISCUSSION...

Northeast winds at ignition will gradually weaken by this

afternoon.  Cooler temperatures are expected today.  Relative

humidity values this afternoon will be very low, around 30

percent, and may drop to 25 percent.  Mixing heights will be

above 2000 feet AGL at ignition, and above 4000 feet by middle 

afternoon.  Smoke dispersal values will be in the good

category.



.THURSDAY...



Sky/weather.........Sunny (0-10 percent). 

Temperature.........36 at ignition...Max 54. 

RH..................56 percent at ignition...Min 29 percent. 

Wind (20 ft)........Winds southeast at 3 mph at 

                    ignition...otherwise Light winds becoming 

                    southeast 5 to 9 mph in the late morning and 

                    afternoon. 

Mixing height.......900 ft AGL at ignition...otherwise 3600 ft AGL. 

Transport winds.....Southeast 5 to 14 mph increasing to 14 to 15 

                    mph late in the afternoon. 

Smoke dispersal.....Poor /3800 knot-ft/ at ignition. Max...good 

                    /36700 knot-ft/. 

Haines Index........5 or moderate potential for large plume 

                    dominated fire growth at ignition...max 5. 



TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 

Sky (%).........5   4   3   3   4   5   5   4   4   6   

Weather cov.....                                        

Weather type....                                        

Tstm cov........                                        

Temp............36  42  48  51  52  53  54  54  54  53  

RH..............56  45  37  33  32  31  30  30  30  31  

20 FT wind dir..SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  

20 FT wind spd..3   4   5   6   7   8   9   9   9   9   

20 FT wind gust.5   6   6   8   10  10  11  12  13  13  

Mix hgt (kft)...0.9 1.5 2.3 2.9 3.3 3.6 3.3 3.1 2.8 2.1 

Transp wind dir.SE  S   SE  SE  SE  SE  SE  SE  SE  SE  

Transp wind spd.5   6   7   7   9   10  12  14  15  14  

Haines index....5   5   5   5   5   5   5   5   5   5   

SDspl kt-ft/10004   8   14  18  26  33  34  37  36  25  



$$

Forecaster...Halbach

Requested by...Andrew Krsnich

Type of request...PRESCRIBED

.TAG 2412278.0/MKX

.DELDT 04/24/24

.FormatterVersion 2.0.0

.EMAIL Andrew.Krsnich@Wisconsin.gov