Spot Forecast
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
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327 FNUS73 KDMX 101256 FWSDMX Spot Forecast for Thomas Mitchell Prescribed Fire...Polk County Conservation Board National Weather Service Des Moines IA 756 AM CDT Mon Jun 10 2024 Forecast is based on ignition time of 0800 CDT on June 10. If conditions become unrepresentative...contact the National Weather Service. An initial observation at ignition and a mid burn observation are required. Please relay them to the National Weather Service for each prescribed burn. .DISCUSSION... No fire weather concerns expected today with light winds out of the northeast this morning switching to be out of the east to southeast this afternoon into evening. Minimum relative humidity values fall to around 35-40% this afternoon. .REST OF TODAY... Sky/weather.........Sunny (15-25 percent). Max temperature.....Around 75. Min humidity........38 percent. Wind (20 ft)........Northeast winds 5 to 8 mph. Mixing height.......5000 ft AGL. Transport winds.....Northeast 6 to 12 mph. Smoke dispersal.....Poor (12400 knot-ft) early in the morning increasing to good (31100 knot-ft) in the afternoon. GFDI................0. Haines Index........5 or moderate potential for large plume dominated fire growth. TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........6 9 17 25 32 23 14 12 5 10 Weather cov..... Weather type.... Tstm cov........ Temp............60 62 65 67 69 71 73 74 75 75 RH..............75 68 62 56 51 47 44 41 38 38 20 FT wind dir..NE NE NE NE NE NE NE NE NE E 20 FT wind spd..6 6 7 7 8 8 7 6 5 5 20 FT wind gust. 12 12 12 10 10 8 9 Mix hgt (kft)...1.2 2.2 3.1 3.7 4.2 4.4 4.8 4.9 5.0 5.0 Transp wind dir.NE NE NE NE NE NE NE NE NE NE Transp wind spd.12 12 10 9 8 8 7 6 6 6 GFDI............0 0 0 0 0 0 0 0 0 0 Haines index....5 5 5 5 5 5 5 5 5 5 SDspl kt-ft/100012 22 28 29 29 31 29 24 25 25 .TONIGHT... Sky/weather.........Mostly clear (15-25 percent). Min temperature.....Around 53. Max humidity........72 percent. Wind (20 ft)........Southeast winds 5 to 6 mph becoming 5 to 7 mph overnight. Mixing height.......300 ft AGL. Transport winds.....Northeast 5 to 6 mph shifting to the south after 3 am. Smoke dispersal.....Fair (23200 knot-ft) early in the evening decreasing to poor (1700 knot-ft) late in the night. GFDI................0. 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 (%).........14 4 13 24 30 32 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Temp............75 72 64 59 57 56 RH..............38 42 56 64 67 69 20 ft wind......E 6 SE 6 SE 5 SE 5 SE 6 S 6 20 ft wind gust.9 8 8 9 10 12 Mix hgt (ft)....4600 400 300 300 300 300 Transport wind..NE 6 E 5 SE 8 S 9 S 9 S 10 GFDI............0 0 0 0 0 0 Haines index....5 5 5 5 5 5 SDspl kt-ft/100023 2 2 3 3 3 .TUESDAY... Sky/weather.........Mostly sunny (40-50 percent). Slight chance of rain showers late in the morning. Max temperature.....Around 82. Min humidity........51 percent. Wind (20 ft)........South winds 7 to 14 mph shifting to the southwest around 13 mph late in the afternoon. Mixing height.......3300 ft AGL. Transport winds.....Southwest 10 to 18 mph. Smoke dispersal.....Poor (3000 knot-ft) early in the morning increasing to good (52900 knot-ft) in the afternoon. GFDI................0. Haines Index........4 to 5 or low to moderate potential for large plume dominated fire growth. TIME (CDT) 6 AM 9 AM NOON 3 PM Sky (%).........33 44 59 50 Weather cov..... S CHC Weather type....NONE NONE RNSHWR NONE Tstm cov........ Temp............54 63 73 78 RH..............74 67 55 54 20 FT wind......S 7G13 S 10G18 S 13G21 SW 13G22 Mix hgt (ft)....300 1400 2900 2800 Transport wind..S 10 S 15 SW 18 SW 17 GFDI............0 0 0 0 Haines index....5 4 4 4 SDspl kt-ft/10003 19 46 41 $$ Forecaster...KCM Requested by...Douglas Todey Type of request...PRESCRIBED .TAG 2415894.0/DMX .DELDT 06/10/24 .FormatterVersion 2.0.0 .EMAIL douglas.todey@polkcountyiowa.gov