####018006990#### FNUS73 KARX 101241 FWSARX Spot Forecast for New Chester Elk...US FISH AND WILDLIFE SERVICE National Weather Service La Crosse WI 741 AM CDT Fri May 10 2024 Forecast is based on ignition time of 0900 CDT on May 10. 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...Scattered showers and thunderstorms are expected between 5 PM and 7 PM today. A few of the thunderstorms could produce strong gusty winds. Highs today will be in the upper 60s. Afternoon humidities will fall to around 30. Winds outside of thunderstorms will be in the 5 to 10 mph range. Smoke dispersion will be initially fair and then improve to excellent as diurnal mixes out the nocturnal inversion. Mainly dry weather will prevail Saturday with high temperatures in the upper 60s and minimum relative humidity expected to be in the mid-30s. Winds will be northwest at 10 to 15 mph. .REST OF TODAY... Sky/weather.........Mostly sunny (35-45 percent). Slight chance of showers and thunderstorms late in the afternoon. CWR.................0 percent increasing to 20 percent late in the afternoon. Temperature.........53 at ignition...Max 68. RH..................72 percent at ignition...Min 33 percent. Wind (20 ft)........Winds west at 5 mph at ignition...otherwise West winds 5 to 10 mph. Gusty and erratic winds expected near thunderstorms late in the afternoon. Mixing height.......1600 ft AGL at ignition...otherwise 2500 ft AGL increasing to 6900 ft AGL. Transport winds.....West 10 to 18 mph increasing to around 20 mph late in the afternoon. Smoke dispersal.....Fair /14100 knot-ft/ at ignition. Max...excellent /110900 knot-ft/. Haines Index........5 or moderate potential for large plume dominated fire growth at ignition...max 5. TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........25 20 11 8 8 18 26 50 67 Weather cov..... SCH Weather type.... RW Tstm cov........ SCH CWR.............0 0 0 0 0 0 0 0 20 Temp............53 57 60 63 65 66 67 68 67 RH..............72 64 53 41 35 36 34 33 37 20 FT wind dir..W W W W W W W W W 20 FT wind spd..5 7 8 8 8 8 9 10 10 20 FT wind gust.11 12 13 13 14 14 15 16 16 Mix hgt (kft)...1.6 2.5 3.8 4.7 5.7 6.3 6.5 6.9 6.3 Transp wind dir.W W W NW W W W W W Transp wind spd.10 13 15 16 15 15 16 18 20 Haines index....5 5 5 5 5 5 5 5 5 SDspl kt-ft/100014 28 49 66 75 82 91 111 107 .TONIGHT... Sky/weather.........Mostly cloudy (65-75 percent) then becoming partly cloudy (25-35 percent). Rain showers and chance of thunderstorms in the evening. CWR.................80 percent decreasing to 10 percent in the late evening and overnight. Temperature.........Min 44. RH..................Max 89 percent. Wind (20 ft)........West winds 7 to 10 mph with gusts to around 19 mph shifting to the northwest 7 to 9 mph with gusts to around 18 mph in the late evening and overnight. Gusty and erratic winds expected near thunderstorms early in the evening. Gusty and erratic winds expected near thunderstorms early in the evening. Mixing height.......500 ft AGL. Transport winds.....West 12 to 16 mph shifting to the northwest 10 to 15 mph in the late evening and overnight. Smoke dispersal.....Good (33600 knot-ft) early in the evening decreasing to poor (4400 knot-ft) late in the night. Haines Index........3 to 5 or very low to moderate potential for large plume dominated fire growth. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........79 76 53 49 38 17 Weather cov.....CHANCE CHANCE Weather type....RNSHWR RNSHWR NONE NONE NONE NONE Tstm cov........S CHC CHANCE CWR.............50 50 10 0 0 0 Temp............66 58 52 50 48 45 RH..............42 67 86 83 86 89 20 ft wind......W 10 W 9 NW 7 NW 7 W 7 NW 9 20 ft wind gust.16 18 14 15 14 18 Mix hgt (ft)....2400 1000 600 600 600 600 Transport wind..W 16 W 12 NW 10 NW 13 NW 15 NW 14 Haines index....5 4 4 4 3 3 SDspl kt-ft/100034 10 5 7 8 7 .SATURDAY... Sky/weather.........Sunny (20-30 percent). CWR.................10 percent. Temperature.........Max 67. RH..................Min 36 percent. Wind (20 ft)........Northwest winds 10 to 15 mph. Mixing height.......2400 ft AGL increasing to 6900 ft AGL. Transport winds.....Northwest 16 to 24 mph increasing to 21 to 28 mph in the late morning and afternoon. Smoke dispersal.....Poor (9400 knot-ft) early in the morning increasing to excellent (151500 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 (%).........5 7 13 27 38 40 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 10 10 Temp............44 49 57 61 64 66 RH..............89 80 59 48 40 36 20 ft wind......NW 10 NW 11 NW 13 NW 13 NW 15 NW 13 20 ft wind gust.20 20 21 22 21 20 Mix hgt (ft)....700 1500 3700 5500 6900 6600 Transport wind..NW 16 NW 21 NW 26 NW 28 NW 25 NW 24 Haines index....3 4 4 4 5 5 SDspl kt-ft/10009 27 86 131 152 140 $$ Forecaster...JSB Requested by...Sean Type of request...PRESCRIBED .TAG 2413686.0/ARX .DELDT 05/10/24 .FormatterVersion 2.0.0 .EMAIL sean_sallmann@fws.gov