Spot Forecast
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
444 FNUS73 KDMX 011828 FWSDMX Spot Forecast for Colwell...RES - p/ Iowa NRCS National Weather Service Des Moines IA 128 PM CDT Wed May 1 2024 Forecast is based on ignition time of 1400 CDT on May 01. 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... Partly sunny skies to continue to drop RH values to near 30% this afternoon, but clouds will fill in gradually. Northwest winds to become light and northerly for a few hours beginning at 4pm, then becoming easterly after sunset. Rain anticipated to arrive near the burn site after 7pm. .REST OF TODAY... Sky/weather.........Partly sunny (55-65 percent). Max temperature.....Around 69. Min humidity........37 percent. Wind (20 ft)........Northwest winds 10 to 14 mph. Mixing height.......3200 ft AGL. Transport winds.....Northwest 13 to 18 mph. Smoke dispersal.....Fair (28400 knot-ft) early in the morning increasing to good (47900 knot-ft) in the afternoon. GFDI................1. Haines Index........5 or moderate potential for large plume dominated fire growth. TIME (CDT) 2PM 3PM 4PM 5PM Sky (%).........68 63 56 68 Weather cov..... Weather type.... Tstm cov........ Temp............66 66 66 67 RH..............37 37 38 39 20 FT wind dir..NW NW N N 20 FT wind spd..14 13 12 10 20 FT wind gust.20 17 16 15 Mix hgt (kft)...3.0 3.2 3.1 2.6 Transp wind dir.NW N N N Transp wind spd.18 15 14 13 GFDI............1 1 1 1 Haines index....5 5 5 5 SDspl kt-ft/100048 41 37 28 .TONIGHT... Sky/weather.........Mostly cloudy (70-80 percent). Slight chance of showers and thunderstorms early in the evening, then chance of showers and thunderstorms early in the evening. Rain showers and thunderstorms likely overnight. Min temperature.....Around 51. Max humidity........83 percent. Wind (20 ft)........North winds around 7 mph shifting to the east 14 to 15 mph after 3 am. Gusty and erratic winds expected near thunderstorms. Mixing height.......500 ft AGL. Transport winds.....North 6 to 8 mph shifting to the east 9 to 16 mph in the late evening and overnight, then increasing to 18 to 22 mph after 3 am. Smoke dispersal.....Fair (19000 knot-ft) early in the evening decreasing to poor (2300 knot-ft) late in the night. GFDI................0. 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 (%).........69 61 75 77 85 88 Weather cov.....S CHC CHANCE CHANCE CHANCE LIKELY LIKELY Weather type....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........S CHC CHANCE CHANCE CHANCE LIKELY LIKELY Temp............67 61 55 53 52 51 RH..............40 53 66 74 77 83 20 ft wind......N 7 NE 7 E 8 E 10 E 13 E 14 20 ft wind gust.12 10 12 14 18 21 Mix hgt (ft)....1500 500 500 500 700 800 Transport wind..N 8 NE 6 E 9 E 13 E 16 E 18 GFDI............0 0 0 0 0 0 Haines index....5 5 5 5 4 4 SDspl kt-ft/100011 2 4 6 10 13 .THURSDAY... Sky/weather.........Cloudy (90-100 percent). Showers and thunderstorms in the morning, then showers and thunderstorms likely in the afternoon. Max temperature.....Around 65. Min humidity........80 percent. Wind (20 ft)........Southeast winds 17 to 21 mph shifting to the south 15 to 18 mph in the afternoon. Gusty and erratic winds expected near thunderstorms. Mixing height.......1400 ft AGL. Transport winds.....Southeast 22 to 30 mph shifting to the south 18 to 23 mph late in the afternoon. Smoke dispersal.....Fair (17200 knot-ft) early in the morning increasing to good (34600 knot-ft) in the afternoon. GFDI................1. Haines Index........2 to 4 or very low to low potential for large plume dominated fire growth. TIME (CDT) 6 AM 9 AM NOON 3 PM Sky (%).........91 96 95 94 Weather cov.....DEFNTE DEFNTE LIKELY CHANCE Weather type....RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........DEFNTE DEFNTE LIKELY CHANCE Temp............52 52 58 62 RH..............80 93 90 90 20 FT wind......E 17G25 E 20G28 SE 18G26 S 17G25 Mix hgt (ft)....1000 1300 1300 1200 Transport wind..E 22 SE 26 SE 29 S 23 GFDI............1 1 1 1 Haines index....4 2 2 3 SDspl kt-ft/100018 30 32 23 $$ Forecaster...Jimenez Requested by...Danny Simcox Type of request...PRESCRIBED .TAG 2412929.1/DMX .DELDT 05/01/24 .FormatterVersion 2.0.0 .EMAIL dsimcox@res.us