Spot Forecast
Issued by NWS Sioux Falls, SD
Issued by NWS Sioux Falls, SD
932 FNUS73 KFSD 031337 FWSFSD Spot Forecast for Pattie Ellson and East Ok. Island Unit...Iowa DNR National Weather Service Sioux Falls SD 837 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 low 50s, dew point will be in the low 40s, and relative humidity (RH) will be around 70%. Winds will be southwesterly at around 10 mph with gusts around 15 mph. A strong inversion is in place at this time, 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 begin to mix out as the surface warms this morning, and by 11 AM should be around 1400 ft AGL, reaching a peak mixing height of 4300 ft AGL by 3pm. Clouds will increase through the day and will be scattered by 3pm, and will be mostly cloudy by 9pm. Winds will gradually increase this morning to a peak sustained of 13 mph around 3 pm. Similarly, gusts will gradually increase to a peak 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 by 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 accompany 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 is 68 degrees F, with an overnight minimum of 35 degrees F. Dew points are expected to remain in the low to 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........40 percent. TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......MCR MCR MCR MCR MCR PC PC PC PC Sky (%).........19 24 21 20 21 31 43 36 34 Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 10 Temp............51 56 60 61 64 64 66 67 66 Dewpoint........42 45 45 45 44 43 42 42 43 RH..............71 66 59 56 49 47 42 40 44 20 FT wind dir..SW SW SW SSW SSW SSW S S S 20 FT wind spd..9 10 12 13 13 14 14 13 13 20 FT wind gust.17 17 20 18 18 18 20 21 21 Mix hgt (kft)...0.9 1.4 2.3 3.3 4.0 4.0 4.5 4.3 4.5 Transp wind dir.SW SW SW SSW SSW S S S S Transp wind spd.14 15 17 17 18 18 21 18 20 Haines index....6 6 6 6 5 5 5 5 5 Smoke Dispersal.PR FR GD GD EX EX EX EX EX .TONIGHT... Min temperature.....Around 45. Max humidity........92 percent. TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM Sky cover.......PCLDY MCLDY MCLDY MCLDY MCLDY CLOUDY Sky (%).........43 51 59 73 87 98 Weather cov..... S CHC LIKELY DEFNTE Weather type....NONE NONE NONE RNSHWR RNSHWR RNSHWR Tstm cov........ S CHC Chc of pcpn (%).10 10 10 20 70 90 Temp............65 60 56 52 49 48 Dewpoint........43 45 45 44 43 43 RH..............44 57 67 73 79 84 20 ft wind......S 13 SSE 10 SE 10 NE 10 NNE 13 N 14 20 ft wind gust.20 16 15 16 18 22 Mix hgt (ft)....3500 500 500 600 900 1300 Transport wind..S 18 S 12 S 13 NE 13 N 16 N 20 Haines index....5 5 5 5 3 3 Smoke Dispersal.GOOD POOR POOR POOR FAIR FAIR .SATURDAY... Max temperature.....Around 62. Min humidity........44 percent. TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM Sky cover.......CLOUDY MCLDY MCLDY MCLDY PCLDY MCLEAR Sky (%).........94 81 59 57 45 21 Weather cov.....DEFNTE CHANCE Weather type....RNSHWR RNSHWR NONE NONE NONE NONE Tstm cov........ Chc of pcpn (%).80 50 10 10 10 10 Temp............46 45 48 52 56 59 Dewpoint........43 43 43 43 42 41 RH..............89 92 83 70 59 51 20 ft wind......N 14 N 15 N 16 NNW 15 NNW 14 NNW 13 20 ft wind gust.21 22 22 21 20 20 Mix hgt (ft)....1200 1400 2300 3900 5200 5900 Transport wind..N 20 N 20 N 24 N 23 NNW 21 NNW 21 Haines index....3 3 3 3 3 3 Smoke Dispersal.FAIR FAIR GOOD EXCEL EXCEL EXCEL $$ Forecaster...AP Requested by...Dusten Paulus Type of request...PRESCRIBED .TAG 2413081.0/FSD .DELDT 05/03/24 .FormatterVersion 2.0.0