Spot Forecast
Issued by NWS La Crosse, WI
Issued by NWS La Crosse, WI
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625 FNUS73 KARX 301806 FWSARX Spot Forecast for Ballard...US FISH AND WILDLIFE SERVICE National Weather Service La Crosse WI 106 PM CDT Tue Apr 30 2024 Forecast is based on ignition time of 1300 CDT on April 30. 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...Showers and storms move through overnight, followed by a dry, mostly sunny day on Wednesday. Low RH highlights the fire weather forecast with values as low as 25-35% likely at the burn site. Winds will gradually decrease throughout the afternoon, but blow 20-25mph out of the west for the first half of the day. This will lead to excellent smoke dispersal after the nighttime inversion breaks tomorrow morning. .TONIGHT... Sky/weather.........Mostly cloudy (70-80 percent) then becoming partly cloudy (25-35 percent) then becoming clear (0-10 percent). Rain showers in the evening. Chance of thunderstorms through the night. Chance of rain showers overnight. CWR.................10 percent increasing to 80 percent in the evening and overnight, then decreasing to 10 percent overnight. Temperature.........Min 50. RH..................Max 89 percent. Wind (20 ft)........South winds 11 to 15 mph shifting to the west 10 to 12 mph after 3 am. Gusts up to 26 mph. Gusty and erratic winds expected near thunderstorms in the evening. Gusty and erratic winds expected near thunderstorms overnight. Mixing height.......500 ft AGL. Transport winds.....South 16 to 22 mph shifting to the west 14 to 21 mph overnight. Smoke dispersal.....Fair (18100 knot-ft) early in the evening decreasing to poor (6400 knot-ft) late in the night. Haines Index........4 or low potential for large plume dominated fire growth. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........56 73 86 93 95 90 83 53 33 23 4 2 Weather cov..... CHC CHC DEF DEF LKY CHC SCH Weather type.... RW RW RW RW RW RW RW Tstm cov........ CHC CHC CHC CHC CHC CHC SCH CWR.............10 30 50 80 80 70 40 20 10 0 0 0 Temp............73 72 69 67 65 63 63 60 58 56 53 51 RH..............51 51 57 65 70 78 81 84 87 83 89 86 20 FT wind dir..S SE S S S S SW SW W W W W 20 FT wind spd..11 11 12 13 15 15 15 13 13 12 11 10 20 FT wind gust.19 19 19 22 23 23 23 23 23 21 20 19 Mix hgt (kft)...1.3 0.7 0.6 0.6 0.7 0.6 0.7 0.8 0.8 0.7 0.6 0.5 Transp wind dir.S S S S S S SW W W W W W Transp wind spd.16 16 18 20 21 22 21 21 18 16 15 14 Haines index....4 4 4 4 4 4 4 4 4 4 4 4 SDspl kt-ft/100018 10 9 10 12 12 12 14 13 10 8 6 .WEDNESDAY... Sky/weather.........Sunny (20-30 percent) then becoming partly sunny (50-60 percent). CWR.................10 percent. Temperature.........Max 70. RH..................Min 36 percent. Wind (20 ft)........West winds 8 to 12 mph shifting to the northwest 8 to 10 mph late in the afternoon. Mixing height.......1600 ft AGL increasing to 3900 ft AGL in the late morning and afternoon. Transport winds.....West 13 to 20 mph shifting to the north 10 to 13 mph late in the afternoon. Smoke dispersal.....Poor (4900 knot-ft) early in the morning increasing to excellent (70500 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 (%).........2 15 14 35 48 56 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 10 10 Temp............50 52 59 64 67 68 RH..............83 80 55 41 36 36 20 ft wind......W 10 W 9 W 12 NW 12 NW 10 NW 9 20 ft wind gust.18 13 18 19 16 13 Mix hgt (ft)....400 1000 2800 3700 3800 3500 Transport wind..W 13 W 17 W 23 W 22 NW 18 NW 13 Haines index....4 5 5 5 5 5 SDspl kt-ft/10005 15 55 70 61 39 .WEDNESDAY NIGHT... Sky/weather.........Mostly cloudy (65-75 percent). Chance of rain showers in the evening. Slight chance of thunderstorms late in the evening, then rain showers likely and chance of thunderstorms overnight. CWR.................10 percent increasing to 70 percent. Temperature.........Min 51. RH..................Max 73 percent. Wind (20 ft)........East winds 5 to 6 mph early in the evening becoming light, then becoming east 5 to 11 mph overnight. Gusty and erratic winds expected near thunderstorms in the late evening and overnight. Mixing height.......400 ft AGL. Transport winds.....Northeast 6 to 8 mph shifting to the east 6 to 14 mph in the late evening and overnight, then increasing to 16 to 20 mph after 3 am. Smoke dispersal.....Fair (14500 knot-ft) early in the evening decreasing to poor (1900 knot-ft) late in the night. Haines Index........5 or moderate potential for large plume dominated fire growth. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........55 59 70 79 85 87 Weather cov..... CHANCE CHANCE CHANCE LIKELY LIKELY Weather type....NONE RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........ S CHC S CHC CHANCE CHANCE CWR.............10 30 30 30 70 70 Temp............66 62 57 55 53 52 RH..............42 49 62 67 72 72 20 ft wind......NE 6 E 5 E 4 E 5 E 6 E 9 20 ft wind gust.8 6 6 8 11 14 Mix hgt (ft)....1400 400 400 400 500 700 Transport wind..N 8 NE 6 SE 6 E 9 E 13 E 16 Haines index....5 5 5 5 5 5 SDspl kt-ft/100010 2 2 3 6 10 $$ Forecaster...KAA Requested by...Erik Acker Type of request...PRESCRIBED .TAG 2412757.1/ARX .DELDT 04/30/24 .FormatterVersion 2.0.0 .EMAIL erik_acker@fws.gov