Spot Forecast
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
747 FNUS73 KDMX 151120 FWSDMX Spot Forecast for Union Hills...USFWS National Weather Service Des Moines IA 620 AM CDT Wed May 15 2024 Forecast is based on ignition time of 0900 CDT on May 15. 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... Clouds increase today with a few scattered showers by this afternoon. Surface winds remain modest from the southeast for much of the day. Relative humidity values drop into the 40s by this afternoon. .REST OF TODAY... Sky/weather.........Mostly sunny (40-50 percent) then becoming mostly cloudy (70-80 percent). Temperature.........58 at ignition...Max 73. RH..................68 percent at ignition...Min 41 percent. Wind (20 ft)........Winds southeast at 9 mph at ignition...otherwise Southeast winds 9 to 10 mph shifting to the south around 10 mph late in the afternoon. Mixing height.......1200 ft AGL at ignition...otherwise 5400 ft AGL. Transport winds.....Southeast 10 to 14 mph. Smoke dispersal.....Poor /12400 knot-ft/ at ignition. Max...excellent /66100 knot-ft/. GFDI................0. Haines Index........4 or low potential for large plume dominated fire growth at ignition...max 4. TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........27 40 49 57 60 67 71 74 80 Weather cov..... Weather type.... Tstm cov........ Temp............58 61 64 67 69 71 71 72 73 RH..............68 58 50 47 44 41 42 41 41 20 FT wind dir..SE SE SE SE SE SE SE S S 20 FT wind spd..9 9 9 9 10 10 10 9 10 20 FT wind gust.12 12 12 13 13 14 15 14 14 Mix hgt (kft)...1.2 1.9 2.5 3.2 3.7 4.6 5.3 5.4 5.4 Transp wind dir.SE SE SE SE SE S S S S Transp wind spd.12 10 10 12 13 13 14 14 14 GFDI............0 0 0 0 0 0 0 0 0 Haines index....4 4 4 4 4 4 4 4 4 SDspl kt-ft/100012 17 23 32 41 52 64 65 66 .TONIGHT... Sky/weather.........Mostly cloudy (70-80 percent). Chance of rain showers in the evening. Chance of thunderstorms through the night. Rain showers likely overnight. Temperature.........Min 55. RH..................Max 96 percent. Wind (20 ft)........South winds 7 to 10 mph shifting to the southwest around 7 mph after 3 am. Gusty and erratic winds expected near thunderstorms early in the evening. Gusty and erratic winds expected near thunderstorms in the late evening and overnight. Mixing height.......500 ft AGL. Transport winds.....Southwest 10 to 15 mph shifting to the west around 9 mph early in the morning. Smoke dispersal.....Good (34100 knot-ft) early in the evening decreasing to poor (4400 knot-ft) late in the night. GFDI................0. Haines Index........3 to 4 or very low to low potential for large plume dominated fire growth. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky (%).........63 76 88 85 78 72 Weather cov..... CHANCE CHANCE CHANCE LIKELY CHANCE Weather type....NONE RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........ S CHC CHANCE CHANCE CHANCE CHANCE Temp............71 67 61 60 58 57 RH..............47 61 81 84 93 93 20 ft wind......S 10 S 9 S 7 S 9 SW 8 SW 7 20 ft wind gust.15 13 9 13 12 9 Mix hgt (ft)....2400 600 800 500 1100 700 Transport wind..S 15 S 13 S 13 SW 13 SW 13 SW 10 GFDI............0 0 0 0 0 0 Haines index....4 3 3 3 3 3 SDspl kt-ft/100034 7 9 5 12 7 .THURSDAY... Sky/weather.........Mostly sunny (45-55 percent). Chance of showers and thunderstorms in the morning, then slight chance of showers and thunderstorms in the afternoon. Temperature.........Max 74. RH..................Min 48 percent. Wind (20 ft)........West winds 7 to 10 mph. Gusty and erratic winds expected near thunderstorms early in the morning. Gusty and erratic winds expected near thunderstorms in the morning and early afternoon. Mixing height.......5300 ft AGL. Transport winds.....West 9 to 12 mph. Smoke dispersal.....Poor (7700 knot-ft) early in the morning increasing to good (42400 knot-ft) in the afternoon. GFDI................0. Haines Index........3 or very low potential for large plume dominated fire growth. TIME (CDT) 6 AM 9 AM NOON 3 PM Sky (%).........72 55 43 28 Weather cov.....CHANCE CHANCE S CHC S CHC Weather type....RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........CHANCE S CHC S CHC S CHC Temp............56 60 67 71 RH..............96 89 65 49 20 FT wind......W 7G9 W 8G13 W 10G14 W 9G14 Mix hgt (ft)....1000 1700 3800 4900 Transport wind..W 9 W 9 W 12 W 9 GFDI............0 0 0 0 Haines index....3 3 3 3 SDspl kt-ft/10008 13 37 41 $$ Forecaster...Cogil Requested by...Ryan Harr Type of request...PRESCRIBED .TAG 2414255.0/DMX .DELDT 05/15/24 .FormatterVersion 2.0.0 .EMAIL ryan.harr@dnr.iowa.gov