Spot Forecast
Issued by NWS Detroit/Pontiac, MI
Issued by NWS Detroit/Pontiac, MI
659 FNUS73 KDTX 211434 FWSDTX Spot Forecast for Placeway Rx...MIDNR National Weather Service Detroit/Pontiac MI 1034 AM EDT Tue May 21 2024 Forecast is based on ignition time of 1400 EDT on May 21. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION...Very warm conditions persist today with a chance for afternoon/evening storms followed by a line of storms late tonight as a cold front approaches. Minimum RH values are expected to range between 40 and 50 percent this afternoon with relatively weak southwest winds. A lingering chance for showers and thunderstorms exists Wednesday as the cold front moves through. Precipitation-free conditions return to finish the week. .REST OF TODAY... Sky/weather.........Mostly sunny (30-40 percent). Slight chance of showers and thunderstorms. Max temperature.....Around 86. Min humidity........50 percent. Eye level winds.....Southwest winds around 6 mph. Mixing height.......5900 ft AGL. Transport winds.....Southwest around 15 mph. Haines Index........4 or low potential for large plume dominated fire growth. Smoke Dispersal....Excellent (MAX...664). TIME (EDT) 2PM 3PM 4PM 5PM SKY (%).........36 39 36 34 WEATHER COV.....SCH SCH SCH SCH WEATHER TYPE....RW RW RW RW TEMP............84 84 85 85 RH..............53 52 51 50 EYE LVL WND DIR.SW SW SW S EYE LVL WND SPD.6 6 6 6 EYE LVL WND GST.14 14 13 14 MIX HGT (KFT)...5.1 5.9 5.6 5.3 HAINES INDEX....4 4 4 4 SMOKE DISPER....665 764 727 693 .TONIGHT... Sky/weather.........Partly cloudy (25-35 percent)becoming mostly cloudy (50-60 percent). Slight chance of showers and thunderstorms early in the evening. Slight chance of thunderstorms overnight. Chance of showers overnight. Min temperature.....Around 69. Max humidity........79 percent. Eye level winds.....South winds 6 to 7 mph. Mixing height.......600 ft AGL. Transport winds.....South 10 to 18 mph...becoming southwest 16 to 20 mph after 3 am. Haines Index........3 to 4 OR very low to low potential for large plume dominated fire growth. Smoke Dispersal....Poor (MIN...43). TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........34 34 25 27 29 51 WEATHER COV.....S CHC CHANCE CHANCE WEATHER TYPE....RNSHWR NONE NONE NONE RNSHWR RNSHWR TEMP............84 80 75 72 71 70 RH..............52 59 68 72 77 78 EYE LVL WND DIR.S S S S S S EYE LVL WND SPD.6 6 6 6 6 7 EYE LVL WND GST.13 12 12 13 14 13 MIX HGT (KFT)...5300 700 600 700 800 1000 HAINES INDEX....4 4 4 4 3 3 SMOKE DISPER....578 64 61 85 130 169 .WEDNESDAY... Sky/weather.........Mostly sunny (35-45 percent). Chance of showers early in the morning, then slight chance of showers and thunderstorms early in the morning. Max temperature.....Around 83. Min humidity........51 percent. Eye level winds.....Southwest winds 7 to 12 mph...becoming west with gusts to around 20 mph late in the afternoon. Mixing height.......5200 ft AGL. Transport winds.....Southwest 17 to 26 mph...becoming west 22 to 24 mph late in the afternoon. Haines Index........3 to 5 OR low to moderate potential for large plume dominated fire growth. Smoke Dispersal....Excellent (MAX...892)...increasing to excellent (MAX...1004) late in the afternoon. TIME (EDT) 6 AM 9 AM NOON 3 PM SKY (%).........63 66 41 15 WEATHER COV.....CHANCE S CHC S CHC S CHC WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TEMP............70 74 80 82 RH..............78 71 60 53 EYE LEVEL WIND..S 7 SW 10 SW 12 W 11 EYE LEVEL WIND..14 19 19 20 MIX HGT (FT)....900 2700 3800 5200 HAINES INDEX....3 4 4 5 SMOKE DISPER....138 541 840 1155 $$ Forecaster...Kacan Requested by...Jeff Vasher Type of request...PRESCRIBED .TAG 2414826.0/DTX .DELDT 05/21/24 .FormatterVersion 2.0.0 .EMAIL vasherj@michigan.gov