FNUS73 KABR 192056 FWSABR Spot Forecast for 4-mile GPA RX...Game Fish and Parks National Weather Service Aberdeen SD 356 PM CDT Tue May 19 2026 Forecast is based on ignition time of 1600 CDT on May 19. If conditions become unrepresentative...contact the National Weather Service. .DISCUSSION...Temperatures will fall below freezing tonight into early Wednesday morning leaving grasses frost covered. Any overnight inversion under surface high pressure should break by mid morning as the high moves off to the east and southerly return flow increases. South winds will gust to around 20 mph by afternoon. .TONIGHT... Sky/weather.........Partly cloudy (45-55 percent) then becoming mostly cloudy (65-75 percent) then becoming mostly clear (20-30 percent). Patchy frost overnight. Areas of frost overnight. CWR.................0 percent. Chance of pcpn......0 percent. Chance of lightning.0 percent. Min temperature.....Around 31. Max humidity........100 percent. Wind (20 ft)........Northwest winds 8 to 15 mph decreasing to around 5 mph late in the evening, then becoming light in the late evening and overnight becoming south around 5 mph after 3 am. Mixing height.......300-4300 ft agl. Transport winds.....Northwest 13 to 20 mph decreasing to 7 to 8 mph late in the evening, then shifting to the south 6 to 7 mph overnight. Smoke dispersal.....Good (72400 knot-ft) decreasing to poor (1800 knot-ft). TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........49 60 81 75 59 36 15 13 13 16 17 17 Weather cov..... PTY ARS ARS ARS ARS ARS Weather type.... FST FST FST FST FST FST Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Chc of ltng (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............46 46 47 43 40 38 38 36 36 34 34 33 RH..............60 62 68 79 85 89 91 94 92 100 100 100 20 FT wind dir..NW NW NW NW VRB VRB VRB VRB VRB VRB S S 20 FT wind spd..15 13 8 5 2 2 2 2 3 3 5 5 20 FT wind gust.23 20 14 9 6 5 5 5 6 7 8 8 Mix hgt (kft)...4.3 3.1 1.8 0.5 0.5 0.4 0.4 0.4 0.4 0.4 0.3 0.4 Smoke Dispersal.GD FR PR PR PR PR PR PR PR PR PR PR .WEDNESDAY... Sky/weather.........Mostly sunny (5-15 percent). Widespread frost early in the morning, then patchy frost early in the morning. CWR.................0 percent. Chance of pcpn......0 percent. Chance of lightning.0 percent. Max temperature.....Around 62. Min humidity........40 percent. Wind (20 ft)........South winds 5 to 13 mph. Mixing height.......300-5500 ft agl. Transport winds.....South 8 to 17 mph. Smoke dispersal.....Poor (2400 knot-ft) increasing to good (75200 knot-ft). TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........14 21 9 4 3 2 2 2 11 5 13 2 Weather cov.....WID PTY Weather type....FST FST Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Chc of ltng (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............32 35 39 44 51 53 55 57 58 60 61 61 RH..............100 100 92 78 60 54 52 48 47 44 43 42 20 FT wind dir..S S S S S S S S S S S S 20 FT wind spd..5 6 7 8 8 9 10 12 13 13 13 13 20 FT wind gust.9 12 1314 15 16 17 20 21 22 22 22 Mix hgt (kft)...0.3 0.4 0.6 1.4 2.6 3.5 4.3 4.6 5.0 5.4 5.5 5.5 Smoke Dispersal.PR PR PR PR PR PR FR FR GD GD GD GD $$ Forecaster...Wise Requested by...Patrick Tate Type of request...PRESCRIBED .TAG 2614058.0/ABR .DELDT 05/19/26 .FormatterVersion 2.0.0 .EMAIL patrick.tate@state.sd.us