383
FNUS73 KABR 110157
FWSABR

Spot Forecast for Lonesome Lake...South Dakota Game Fish & Parks
National Weather Service Aberdeen SD
857 PM CDT Sun May 10 2026

Forecast is based on ignition time of 1000 CDT on May 11.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...Tomorrow marks the beginning of what looks like a
windy week. Wednesday may be the only day this week with light
winds. For Monday, southerly winds will increase already during
the morning hours, with gusts likely over 25 mph by late morning.
During the afternoon, expecting gusts more in the 30-35 mph range.
Humidity is forecast to fall close to 30 percent by mid/late
afternoon. On Tuesday, winds switch to the northwest and will be
even stronger than Monday.

.MONDAY...

Sky/weather.........Partly sunny (30-40 percent).
CWR.................1 percent.
Chance of pcpn......0 percent.
Chance of lightning.2 percent.
Max temperature.....Around 70.
Min humidity........32 percent.
Wind (20 ft)........South winds 14 to 21 mph. Gusts up to 31 mph
                    increasing to 32 mph late in the afternoon.
Mixing height.......1500-4300 ft agl.
Transport winds.....South 17 to 25 mph.
Smoke dispersal.....Poor (23000 knot-ft) increasing to good (73300
                    knot-ft).

TIME (CDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........29  27  30  42  47  32  32  47
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0
Chc of ltng (%).0   0   0   0   0   0   0   0
Temp............50  55  59  63  66  68  68  70
RH..............48  41  37  35  33  32  35  34
20 FT wind dir..S   S   S   S   S   S   S   S
20 FT wind spd..14  15  17  17  18  20  20  21
20 FT wind gust.22  24  26  28  30  31  32  32
Mix hgt (kft)...1.5 2.6 3.0 3.4 3.7 4.0 4.3 4.2
Smoke Dispersal.PR  FR  FR  GD  GD  GD  GD  GD

.MONDAY NIGHT...

Sky/weather.........Mostly cloudy (70-80 percent) then becoming
                    partly cloudy (25-35 percent). Slight chance of
                    rain showers late in the evening. Chance of
                    rain showers late in the evening.
CWR.................6 percent.
Chance of pcpn......30 percent.
Chance of lightning.14 percent.
Min temperature.....Around 49.
Max humidity........71 percent.
Wind (20 ft)........South winds 13 to 20 mph with gusts to around
                    31 mph shifting to the northwest 17 to 18 mph
                    with gusts to around 31 mph after 3 am.
Mixing height.......500-3600 ft agl.
Transport winds.....South 15 to 24 mph shifting to the northwest 15
                    to 21 mph overnight.
Smoke dispersal.....Good (76600 knot-ft) decreasing to poor (6500
                    knot-ft).

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........63  77  84  80  81  70  70  29  36  33  25  29
Weather cov.....                SCH CHC
Weather type....                RW  RW
Tstm cov........
Chc of pcpn (%).0   10  10  10  20  30  10  0   0   0   0   0
Chc of ltng (%).0   10  10  10  10  10  10  0   0   0   0   0
Temp............70  69  68  64  63  61  59  57  55  55  52  51
RH..............35  37  39  45  46  51  57  62  64  64  69  68
20 FT wind dir..S   S   S   S   S   S   S   SW  W   NW  NW  NW
20 FT wind spd..20  18  17  16  15  14  13  13  15  17  18  18
20 FT wind gust.31  30  29  28  26  25  22  21  25  30  31  31
Mix hgt (kft)...3.6 2.5 0.8 0.8 0.6 0.6 0.6 0.5 0.5 0.6 0.7 0.7
Smoke Dispersal.GD  FR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.TUESDAY...

Sky/weather.........Mostly sunny (5-15 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of lightning.0 percent.
Max temperature.....Around 68.
Min humidity........31 percent.
Wind (20 ft)........Breezy. Northwest winds 17 to 26 mph. Gusts up
                    to 39 mph increasing to 41 mph in the
                    afternoon.
Mixing height.......700-9200 ft agl.
Transport winds.....Northwest 21 to 30 mph increasing to 31 to 35
                    mph in the afternoon.
Smoke dispersal.....Poor (12900 knot-ft) increasing to excellent
                    (244800 knot-ft).

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........14  22  9   6   2   2   2   2   4   5   7   6
Weather cov.....
Weather type....
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............50  49  52  56  59  62  65  66  67  68  68  68
RH..............68  71  63  55  49  43  37  34  32  31  31  31
20 FT wind dir..NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..18  17  21  23  24  25  26  26  26  26  25  24
20 FT wind gust.31  30  31  33  37  39  40  40  41  41  40  39
Mix hgt (kft)...0.7 0.8 1.7 3.0 4.3 5.5 6.5 7.4 8.4 9.0 9.2 8.7
Smoke Dispersal.PR  PR  PR  GD  VGD VGD EXL EXL EXL EXL EXL EXL

$$
Forecaster...TMT
Requested by...Owen McElroy
Type of request...PRESCRIBED
.TAG 2613285.0/ABR
.DELDT 05/10/26
.FormatterVersion 2.0.0
.EMAIL owen.mcelroy@state.sd.us