← Previous March 28, 2024 9:16 AM
FNUS73 KARX 281416 FWSARX Spot Forecast for Cow Branch WMA...Iowa DNR National Weather Service La Crosse WI 916 AM CDT Thu Mar 28 2024 Forecast is based on ignition time of 1000 CDT on March 28. 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...Clear skies and low afternoon RH values highlight today's fire weather forecast. At the burn site, RH is expected to fall into the mid 30s with a "worst case scenario" of 25-30% (if mixing is stronger than currently forecast). Smoke dispersal will be fair to good with northwest winds gradually increasing this afternoon. Rain chances increase tomorrow afternoon/evening as the next sensible weather system arrives. With increased mositure into the region, afternoon RH vaues are forecast to fall as low as 47% with poor smoke dispersal in the morning becoming good as southeast winds increase. .TODAY... Sky/weather.........Mostly sunny (25-35 percent). CWR.................0 percent. Temperature.........32 at ignition...Max 48. RH..................56 percent at ignition...Min 36 percent. Wind (20 ft)........Winds northwest at 4 mph at ignition...otherwise Light winds becoming west 5 to 7 mph in the afternoon. Mixing height.......1900 ft AGL at ignition...otherwise 3800 ft AGL. Transport winds.....Northwest 6 to 12 mph. Smoke dispersal.....Fair /13100 knot-ft/ at ignition. Max...good /37900 knot-ft/. Haines Index........5 or moderate potential for large plume dominated fire growth at ignition...max 5. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........16 14 8 6 6 8 8 10 Weather cov..... Weather type.... Tstm cov........ CWR.............0 0 0 0 0 0 0 0 Temp............32 36 40 42 45 46 47 48 RH..............56 45 42 41 38 36 36 36 20 FT wind dir..NW NW W W W W W W 20 FT wind spd..4 4 5 6 6 6 7 6 20 FT wind gust.7 8 8 9 9 9 11 11 Mix hgt (kft)...1.9 2.4 3.2 3.5 3.6 3.8 3.8 3.7 Transp wind dir.NW W W W W W W W Transp wind spd.8 8 10 10 10 12 12 10 Haines index....5 5 5 5 5 5 5 5 SDspl kt-ft/100013 17 29 32 33 38 38 33 .TONIGHT... Sky/weather.........Mostly clear (15-25 percent) then becoming mostly cloudy (50-60 percent). CWR.................0 percent. Temperature.........Min 27. RH..................Max 70 percent. Wind (20 ft)........Northwest winds 5 to 6 mph shifting to the north around 5 mph late in the evening, then becoming light late in the evening becoming northeast around 5 mph late in the evening shifting to the east. Mixing height.......300 ft AGL. Transport winds.....Northwest 7 to 9 mph shifting to the east 9 to 10 mph overnight. Smoke dispersal.....Fair (26700 knot-ft) early in the evening decreasing to poor (2600 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 (%).........9 4 3 13 23 38 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ CWR.............0 0 0 0 0 0 Temp............46 41 34 31 28 28 RH..............38 45 61 63 69 69 20 ft wind......NW 6 NW 5 N 4 NE 5 NE 5 E 5 20 ft wind gust.8 7 7 9 9 8 Mix hgt (ft)....3300 400 400 400 300 400 Transport wind..W 9 N 8 N 8 NE 9 NE 9 E 9 Haines index....5 4 4 4 4 4 SDspl kt-ft/100027 3 3 3 3 3 .FRIDAY... Sky/weather.........Partly sunny (60-70 percent). Chance of sprinkles early in the afternoon. Slight chance of rain late in the afternoon. CWR.................10 percent increasing to 20 percent late in the afternoon. Temperature.........Max 57. RH..................Min 47 percent. Wind (20 ft)........Southeast winds 5 to 13 mph. Mixing height.......2200 ft AGL. Transport winds.....Southeast 12 to 21 mph increasing to 20 to 22 mph late in the afternoon. Smoke dispersal.....Poor (4100 knot-ft) early in the morning increasing to good (41600 knot-ft) in the afternoon. Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky (%).........69 83 67 55 55 78 Weather cov..... CHANCE S CHC Weather type....NONE NONE NONE NONE RNSHWR RAIN Tstm cov........ CWR.............0 0 0 0 10 20 Temp............28 29 39 49 55 57 RH..............69 67 52 48 47 51 20 ft wind......E 5 E 8 E 10 SE 11 SE 12 SE 13 20 ft wind gust.9 13 15 16 19 20 Mix hgt (ft)....400 600 1100 1800 2000 2200 Transport wind..E 12 E 14 E 17 SE 20 SE 20 SE 22 Haines index....4 3 3 3 3 3 SDspl kt-ft/10004 8 17 31 34 42 $$ Forecaster...KAA Requested by...Trent Stuchel Type of request...PRESCRIBED .TAG 2408752.0/ARX .DELDT 03/28/24 .FormatterVersion 2.0.0 .EMAIL [email protected]