FNUS73 KMKX 251239 FWSMKX Spot Forecast for La Grange Core...WI DNR National Weather Service Milwaukee/Sullivan WI 739 AM CDT Thu Apr 25 2024 Forecast is based on ignition time of 1100 CDT on April 25. Please contact the National Weather Service if conditions become unrepresentative or if you have questions/concerns about this forecast. .DISCUSSION... Temperatures in the upper 30s at ignition should rise quickly into the middle 50s by midday and into the upper 50s this afternoon. Light southeast 20 foot winds at ignition will gradually increase later this morning but remain in the 5 to 9 MPH range into this afternoon. Relative humidity values around 60 percent at ignition will quickly drop to around 33 percent by midday and to 28 percent by middle afternoon. It could drop to as low as 20 percent this afternoon. Poor smoke dispersal values at ignition will quickly become good by midday into this afternoon. Low mixing heights at ignition will quickly rise above 4000 feet AGL by midday into this afternoon. .REST OF TODAY... Sky/weather.........Sunny (0-10 percent). Temperature.........51 at ignition...Max 58. RH..................34 percent at ignition...Min 27 percent. Wind (20 ft)........Winds southeast at 6 mph at ignition...otherwise Southeast winds 6 to 9 mph. Mixing height.......2900 ft AGL at ignition...otherwise 4800 ft AGL. Transport winds.....Southeast 9 to 13 mph. Smoke dispersal.....Fair /23000 knot-ft/ at ignition. Max...good /47000 knot-ft/. Haines Index........5 or moderate potential for large plume dominated fire growth at ignition...max 5. TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........9 7 5 6 7 8 9 Weather cov..... Weather type.... Tstm cov........ Temp............51 53 56 57 57 58 57 RH..............34 32 29 28 28 28 30 20 FT wind dir..SE SE SE SE SE E E 20 FT wind spd..6 6 6 7 8 9 9 20 FT wind gust.7 10 10 11 11 11 11 Mix hgt (kft)...2.9 4.0 4.4 4.7 4.8 4.5 4.0 Transp wind dir.SE E E SE SE E E Transp wind spd.9 10 12 12 10 12 13 Haines index....5 5 5 5 5 5 5 SDspl kt-ft/100023 36 44 47 43 45 44 .TONIGHT... Sky/weather.........Mostly clear (20-30 percent). Temperature.........Min 37. RH..................Max 82 percent. Wind (20 ft)........Southeast winds 7 to 10 mph. Gusts up to 21 mph after 3 am. Mixing height.......400 ft AGL. Transport winds.....East 13 to 18 mph. Smoke dispersal.....Good (38400 knot-ft) early in the evening decreasing to poor (4800 knot-ft) late in the night. Haines Index........4 to 5 or low to moderate potential for large plume dominated fire growth. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........11 12 11 11 10 10 10 10 16 23 29 37 Weather cov..... Weather type.... Tstm cov........ Temp............56 54 48 45 42 41 40 40 39 39 39 38 RH..............32 36 47 55 65 67 73 76 76 76 79 79 20 FT wind dir..E E E E E E SE SE SE SE SE SE 20 FT wind spd..9 8 8 7 7 7 7 7 8 8 9 10 20 FT wind gust.11 11 10 10 10 10 11 13 14 14 16 17 Mix hgt (kft)...3.2 0.9 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.6 Transp wind dir.E E E E E E E E SE SE SE SE Transp wind spd.14 14 13 14 14 14 14 15 16 17 16 18 Haines index....5 5 5 5 5 5 5 4 4 4 4 4 SDspl kt-ft/100038 11 5 5 5 5 5 6 6 7 8 9 .FRIDAY... Sky/weather.........Partly sunny (60-70 percent) then becoming cloudy (90-100 percent). Rain showers likely early in the afternoon. Rain showers late in the afternoon. Temperature.........Max 59. RH..................Min 44 percent. Wind (20 ft)........Southeast winds 10 to 16 mph. Gusts up to 30 mph increasing to 31 mph late in the afternoon. Mixing height.......2000 ft AGL. Transport winds.....Southeast 18 to 26 mph increasing to around 28 mph in the afternoon. Smoke dispersal.....Poor (9500 knot-ft) early in the morning increasing to good (48700 knot-ft) in the afternoon. Haines Index........4 or low potential for large plume dominated fire growth. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........46 54 62 70 78 83 87 92 92 92 92 94 Weather cov..... LKY LKY LKY DEF DEF Weather type.... RW RW RW RW RW Tstm cov........ Temp............39 40 44 49 52 55 57 58 58 58 57 57 RH..............76 70 65 58 54 49 47 45 47 49 55 59 20 FT wind dir..SE SE SE SE SE SE SE SE SE SE SE SE 20 FT wind spd..10 11 12 13 14 14 15 15 15 16 16 16 20 FT wind gust.17 18 18 20 21 22 22 23 23 24 25 25 Mix hgt (kft)...0.6 0.6 1.1 1.3 1.6 1.8 1.9 2.0 1.9 1.7 1.6 1.4 Transp wind dir.SE SE SE SE SE SE SE SE SE SE SE SE Transp wind spd.18 18 24 25 25 25 26 28 28 28 28 28 Haines index....4 4 4 4 4 4 4 4 4 4 4 4 SDspl kt-ft/100010 10 24 29 34 40 44 49 45 42 38 34 $$ Forecaster...Cronce Requested by...duerkop Type of request...PRESCRIBED .TAG 2412427.0/MKX .DELDT 04/25/24 .FormatterVersion 2.0.0 .EMAIL peter.duerkop@wisconsin.gov