Spot Forecast
Issued by NWS Duluth, MN
Issued by NWS Duluth, MN
578 FNUS73 KDLH 181430 FWSDLH Spot Forecast for NBWA Unit 22...WI DNR National Weather Service Duluth MN 930 AM CDT Wed Sep 18 2024 Forecast is based on ignition time of 1200 CDT on September 18. If there are questions or concerns with this forecast, or if conditions become unrepresentative, contact the National Weather Service in Duluth at 218-729-0653. .DISCUSSION... Today should be another warm day with high temperatures near 85 degrees and no precipitation expected. There will be some gusty south winds with gusts to near 20 mph in the afternoon and good mixing leading to excellent smoke dispersal. Despite hot temperatures, relative humidity is only expected to fall to around 40-45% this afternoon. Tonight, chances for showers and thunderstorms increase into Thursday, with showers and thunderstorms likely Thursday as a cold front sweeps across the area. Some severe thunderstorms are possible in the afternoon and evening. .REST OF TODAY... Sky/weather.........Mostly sunny (40-50 percent). Chance of pcpn......0 percent. LAL.................1. Max temperature.....Around 85. Min humidity........44 percent. Wind (20 ft)........South winds 9 to 10 mph with gusts to around 19 mph. Mixing height.......4200 ft AGL. Transport winds.....South 18 to 21 mph. Smoke dispersal.....Good (40600-51800 knot-ft) increasing to excellent (61300-76100 knot-ft) late in the afternoon. Haines Index........4 or low potential for large plume dominated fire growth. Pcpn amount.........0.00 inches. TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......PC PC PC PC PC MC Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 LAL.............1 1 1 1 1 1 Temp............81 83 83 85 83 82 RH..............47 46 44 45 44 47 20 FT wind dir..S S S S S S 20 FT wind spd..9 9 10 10 10 9 20 FT wind gust.19 19 19 19 19 19 Mix hgt (kft)...2.4 3.0 3.7 4.0 4.2 3.8 Transp wind dir.S S S S S S Transp wind spd.20 20 20 21 21 18 Haines index....4 4 4 4 4 4 SDspl kt-ft/100041 52 63 73 76 61 .TONIGHT... Sky/weather.........Mostly cloudy (55-65 percent) then becoming partly cloudy (45-55 percent) then becoming mostly cloudy (55-65 percent). Chance of showers and thunderstorms overnight. Chance of pcpn......40 percent. LAL.................1 until 0100, then 2 until 0400, then 3. Min temperature.....Around 60. Max humidity........90 percent. Wind (20 ft)........Southeast winds 7 to 8 mph. Gusts up to 21 mph in the evening. Gusty and erratic winds expected near thunderstorms overnight. Gusty and erratic winds expected near thunderstorms after 3 am. Mixing height.......1600 ft AGL. Transport winds.....South 12 to 14 mph. Smoke dispersal.....Poor to fair (5000-19200 knot-ft). Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. Pcpn amount.........0.04 inches. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky cover.......MC MC MC MC PC MC MC MC MC MC MC MC Weather cov..... SCH SCH CHC CHC CHC Weather type.... RW RW RW RW RW Tstm cov........ SCH SCH SCH CHC CHC Chc of pcpn (%).0 10 10 10 10 10 10 20 20 30 40 40 LAL.............1 1 1 1 1 1 1 2 2 2 3 3 Temp............81 76 73 71 70 69 68 67 66 64 64 62 RH..............49 58 64 68 66 66 65 65 68 70 73 78 20 FT wind dir..S SE SE SE SE SE S S S S S S 20 FT wind spd..8 7 7 7 7 7 7 7 7 7 7 7 20 FT wind gust.19 18 18 18 18 16 16 16 16 15 15 15 Mix hgt (kft)...1.6 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Transp wind dir.S S S S S S S S S S S S Transp wind spd.14 13 12 13 14 14 14 14 14 14 13 13 Haines index....4 4 4 4 4 4 4 3 3 3 3 3 SDspl kt-ft/100019 7 5 5 6 6 6 6 6 6 5 5 .THURSDAY... Sky/weather.........Partly sunny (60-70 percent). Showers likely and chance of thunderstorms. Chance of pcpn......60 percent. LAL.................3 until 1000, then 2 until 1600, then 4. Max temperature.....Around 81. Min humidity........67 percent. Wind (20 ft)........South winds 7 to 10 mph. Gusts up to 23 mph in the late morning and afternoon. Gusty and erratic winds expected near thunderstorms early in the morning. Gusty and erratic winds expected near thunderstorms in the late morning and afternoon. Mixing height.......2300 ft AGL increasing to 3500 ft AGL in the afternoon. Transport winds.....South 13 to 22 mph increasing to 21 to 24 mph late in the afternoon. Smoke dispersal.....Poor to fair (5800-15800 knot-ft) increasing to good to excellent (45800-72800 knot-ft). Haines Index........3 or very low potential for large plume dominated fire growth. Pcpn amount.........0.73 inches. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......MC MC MC MC MC MC MC MC MC MC MC MC Weather cov.....CHC LKY CHC CHC CHC CHC CHC CHC CHC CHC CHC LKY Weather type....RW RW RW RW RW RW RW RW RW RW RW RW Tstm cov........CHC CHC CHC CHC SCH SCH SCH SCH SCH SCH CHC CHC Chc of pcpn (%).50 60 50 40 30 40 40 40 50 50 50 60 LAL.............3 3 3 3 2 2 2 2 2 2 4 4 Temp............61 61 63 66 69 72 75 77 79 80 80 79 RH..............84 87 90 84 78 76 71 69 67 67 67 69 20 FT wind dir..S S S S S S S S S S S S 20 FT wind spd..7 7 8 8 9 10 10 10 10 10 10 9 20 FT wind gust.15 16 16 18 19 20 20 20 21 21 21 20 Mix hgt (kft)...0.5 0.5 0.9 1.1 1.5 1.9 2.3 2.8 3.0 3.2 3.5 2.5 Transp wind dir.S S S S S S S S S S S S Transp wind spd.14 13 14 16 20 21 22 22 23 24 24 21 Haines index....3 3 3 3 3 3 3 3 3 3 3 3 SDspl kt-ft/10006 6 11 16 26 34 43 53 61 69 73 46 $$ Forecaster...Ketzel Requested by...Kirby Dernovsek Type of request...PRESCRIBED .TAG 2422666.0/DLH .DELDT 09/18/24 .FormatterVersion 2.0.0 .EMAIL kirby.dernovsek@wisconsin.gov