Spot Forecast
Issued by NWS Sioux Falls, SD
Issued by NWS Sioux Falls, SD
131 FNUS73 KFSD 031445 FWSFSD Spot Forecast for Heron Lake WMA...MNDNR National Weather Service Sioux Falls SD 945 AM CDT Fri May 3 2024 If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... With recent rains, the fire danger will continue to remain low for the next several days. Today will start out dry before showers move in later this afternoon into tonight. At the time of ignition, the sky will be clear, temperatures will be in the mid 50s, dew point will be in the mid 40s, and relative humidity (RH) will be around 70%. Winds will be southwesterly at around 10 mph with gusts around 15 mph. Remnants of the morning will still be in place, with mixing heights only around 500 ft above ground level (AGL). As a result, smoke will be held close to the surface. The inversion is expected to continue to mix out as the surface warms this morning, and by noon should be around 1400 ft AGL, reaching a peak mixing height of 3500 ft AGL by 3pm. Clouds will increase through the day and the sky will be mostly cloudy around 3pm. Winds will gradually increase this morning to a peak sustained of 15 mph with gusts of 20 mph around 3 pm. A cold front will be approaching the area causing winds to gradually turn southerly by approximately 5pm. They continue to turn counter clockwise as the front approaches. The front will pass through the area between 10pm and midnight, after which winds will be northerly. Despite the frontal passage, maximum wind gusts are expected to remain 15-20 mph. Rain showers are expected to follow the front, and will begin between 10pm and midnight. Showers are expected to be clear of the area after 8 am. Rain totals are expected to be between 0.25 and 0.5 inches. Maximum temperature for this afternoon will be in the upper 60s, with an overnight minimum in the mid 40s. Dew points are expected to remain in the mid 40s through Saturday morning. RH will fall through the day reaching its minimum of 40% around 3 pm, increasing again overnight. .REST OF TODAY... Max temperature.....Around 68. Min humidity........42 percent. TIME (CDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......PC MCR MCR MCR PC MC PC PC Sky (%).........29 21 20 21 30 52 42 48 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 Temp............55 58 62 64 64 65 67 66 Dewpoint........46 45 45 45 44 43 43 43 RH..............72 62 54 51 47 45 42 44 20 FT wind dir..WSW SW SW SSW SSW SSW SSW S 20 FT wind spd..12 12 13 13 14 14 13 13 20 FT wind gust.14 15 18 18 21 21 22 22 Mix hgt (kft)...1.5 2.4 3.3 4.1 4.4 4.6 4.8 4.8 Transp wind dir.WSW SW SW SSW SSW SSW SSW S Transp wind spd.17 18 21 22 21 21 20 21 Haines index....6 6 6 5 5 5 5 5 Smoke Dispersal.FR GD GD EX EX EX EX EX .TONIGHT... Min temperature.....Around 44. Max humidity........95 percent. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky cover.......MCLDY MCLDY MCLDY MCLDY CLOUDY CLOUDY Sky (%).........54 66 79 81 88 98 Weather cov..... S CHC CHANCE LIKELY DEFNTE Weather type....NONE NONE RNSHWR RNSHWR RNSHWR RNSHWR Tstm cov........ Chc of pcpn (%).10 10 20 30 70 90 Temp............65 59 53 50 48 45 Dewpoint........44 45 45 44 43 43 RH..............46 59 73 81 84 91 20 ft wind......S 12 SSE 9 E 9 N 12 N 13 N 12 20 ft wind gust.20 15 15 17 17 20 Mix hgt (ft)....3900 600 600 900 1200 1300 Transport wind..S 16 S 10 E 13 N 15 N 18 N 18 Haines index....5 5 5 5 3 3 Smoke Dispersal.GOOD POOR POOR POOR FAIR FAIR .SATURDAY... Max temperature.....Around 61. Min humidity........46 percent. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky cover.......CLOUDY MCLDY PCLDY MCLDY PCLDY MCLEAR Sky (%).........92 75 46 52 44 20 Weather cov.....DEFNTE CHANCE Weather type....RNSHWR RNSHWR NONE NONE NONE NONE Tstm cov........ Chc of pcpn (%).80 50 10 10 10 10 Temp............45 45 50 54 59 60 Dewpoint........43 43 43 43 42 40 RH..............94 93 77 65 54 47 20 ft wind......N 13 N 14 NNW 15 NNW 15 NNW 14 NNW 14 20 ft wind gust.20 20 18 20 18 18 Mix hgt (ft)....1200 1400 2500 4200 5600 6100 Transport wind..N 20 N 20 N 23 N 21 NNW 21 NNW 20 Haines index....3 3 3 3 3 3 Smoke Dispersal.FAIR FAIR GOOD EXCEL EXCEL EXCEL $$ Forecaster...AP Requested by...Chad August Type of request...PRESCRIBED .TAG 2413090.0/FSD .DELDT 05/03/24 .FormatterVersion 2.0.0