####018006367#### FNUS73 KARX 250900 FWSARX Spot Forecast for Oronoco Prairie SNA...Minnesota DNR National Weather Service La Crosse WI 400 AM CDT Thu Apr 25 2024 Forecast is based on ignition time of 0900 CDT on April 25. 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... High pressure overhead today resulting in sunny skies and dry conditions. An approaching weather system to our west will help to increase southeasterly winds today. Wind gusts up to 25mph will be possible. With lighter winds in the morning, fair smoke dispersal is expected. Minimum relative humidity values in the afternoon will be around 30 percent. Winds will also increase overnight into Friday as the system gets closer. Wet and windy conditions for Friday are expected. .REST OF TODAY... Sky/weather.........Mostly sunny (20-30 percent). CWR.................0 percent. Temperature.........46 at ignition...Max 64. RH..................58 percent at ignition...Min 30 percent. Wind (20 ft)........Winds south at 9 mph at ignition...otherwise Southeast winds 9 to 15 mph. Mixing height.......1100 ft AGL at ignition...otherwise 2500 ft AGL increasing to 4700 ft AGL in the afternoon. Transport winds.....South 17 to 22 mph. Smoke dispersal.....Fair /16500 knot-ft/ at ignition. Max...excellent /87700 knot-ft/. Haines Index........4 or low potential for large plume dominated fire growth at ignition...max 4. TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........36 22 33 31 31 27 18 17 23 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 0 Temp............46 53 56 58 61 62 63 64 64 RH..............58 50 43 40 35 33 32 31 30 20 FT wind dir..S S S SE SE SE SE SE SE 20 FT wind spd..9 10 11 12 13 13 13 13 15 20 FT wind gust.14 15 16 18 20 20 20 21 20 Mix hgt (kft)...1.1 1.6 2.5 3.9 4.4 4.7 4.6 4.6 4.6 Transp wind dir.S S S S S S S S S Transp wind spd.17 17 18 20 21 20 21 21 22 Haines index....4 4 4 4 4 4 4 4 4 SDspl kt-ft/100017 24 40 66 80 80 84 83 88 .TONIGHT... Sky/weather.........Partly cloudy (30-40 percent) then becoming mostly cloudy (65-75 percent). Slight chance of rain showers overnight. Chance of rain showers after 3 am. CWR.................10 percent increasing to 40 percent overnight. Temperature.........Min 44. RH..................Max 65 percent. Wind (20 ft)........Southeast winds 12 to 18 mph with gusts to around 27 mph. Mixing height.......4000 ft AGL decreasing to 500 ft AGL. Transport winds.....Southeast 18 to 25 mph. Smoke dispersal.....Excellent (80700 knot-ft) early in the evening decreasing to poor (9000 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 (%).........30 38 42 61 66 86 Weather cov..... S CHC CHANCE Weather type....NONE NONE NONE NONE RNSHWR RNSHWR Tstm cov........ CWR.............0 0 0 0 20 30 Temp............63 58 52 50 48 46 RH..............31 37 46 50 54 63 20 ft wind......SE 13 SE 12 SE 13 SE 16 SE 16 SE 17 20 ft wind gust.19 20 21 23 23 26 Mix hgt (ft)....4000 600 600 500 700 700 Transport wind..S 23 SE 20 SE 20 SE 20 SE 21 SE 24 Haines index....4 5 5 5 5 5 SDspl kt-ft/100081 11 10 9 13 15 .FRIDAY... Sky/weather.........Cloudy (85-95 percent). Slight chance of thunderstorms in the morning. Rain showers through the day. Chance of thunderstorms in the afternoon. CWR.................90 percent. Temperature.........Max 58. RH..................Min 63 percent. Wind (20 ft)........Southeast winds 18 to 21 mph with gusts to around 33 mph. Gusty and erratic winds expected near thunderstorms. Mixing height.......2300 ft AGL. Transport winds.....Southeast 25 to 33 mph increasing to 33 to 35 mph in the afternoon. Smoke dispersal.....Fair (22000 knot-ft) early in the morning increasing to excellent (68300 knot-ft) in the afternoon. Haines Index........3 to 5 or very low to moderate potential for large plume dominated fire growth. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........92 89 93 93 92 91 Weather cov.....CHANCE DEFNTE DEFNTE DEFNTE DEFNTE DEFNTE Weather type....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........ S CHC S CHC S CHC S CHC CHANCE CWR.............50 80 80 80 90 90 Temp............46 46 50 52 53 54 RH..............68 68 63 66 69 71 20 ft wind......SE 19 SE 18 SE 19 SE 21 SE 21 SE 20 20 ft wind gust.27 27 32 33 32 32 Mix hgt (ft)....1000 1600 1700 2000 2200 2300 Transport wind..SE 25 SE 29 SE 33 SE 35 SE 35 SE 35 Haines index....5 4 4 4 3 3 SDspl kt-ft/100022 40 49 59 66 68 $$ Forecaster...JRC Requested by...Dominic Ruis Type of request...PRESCRIBED .TAG 2412355.0/ARX .DELDT 04/25/24 .FormatterVersion 2.0.0 .EMAIL dominic.ruis@state.mn.us