Suppression Forecast
Issued by NWS Aberdeen, SD

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000
FNUS73 KABR 191413
FWSABR

Spot Forecast for LAPLANT RX...SD-CRA
National Weather Service Aberdeen SD
913 AM CDT Sat Aug 19 2017

Forecast is based on ignition time of 0900 MDT on August 19.
If conditions become unrepresentative...contact the National Weather
Service in Aberdeen SD.

.DISCUSSION...
Warmer and drier air will move into the region today along with
increasing southerly winds. Relative humidity is forecast to fall
below 25 percent. A cold front will move into north central South
Dakota late this afternoon, switching winds to a northwest
direction, and they may become breezy.

.TODAY...

Sky/weather.........Sunny (5-15 percent cloud).
Max temperature.....91-96.
Min humidity........25-30 percent.
Wind (20 ft)........South winds 8 to 16 mph with gusts up to 20
                    mph, increasing to 13 to 20 mph with gusts up
                    to 30 mph in the late morning and early
                    afternoon, then, becoming southwest around 8
                    mph early, becoming west around 6 mph early.
CWR.................0 percent.
LAL.................1.
Mixing height.......100-600 ft agl, increasing to 6400-6900 ft agl.
Transport winds.....South 24 to 29 mph, becoming southwest 10 to 17
                    mph in the afternoon.
Smoke dispersal.....Poor (5700-48900), increasing to fair early.
Haines Index........6 (high).

TIME (MDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........3   4   4   5   8   12  15  19  23
Weather cov.....
Weather type....
Tstm cov........
Temp............73  78  82  86  88  90  91  93  92
RH..............57  48  43  37  34  31  29  27  28
20 FT wind dir..S   S   S   S   S   S   S   SW  W
20 FT wind spd..20  18  16  14  14  14  13  8   6
20 FT wind gust.30  30  25  20  20  20  15  10  10

.TONIGHT...

Sky/weather.........Partly cloudy (35-45 percent cloud), then
                    becoming mostly cloudy (55-65 percent cloud).
Min temperature.....60-65.
Max humidity........76-81 percent.
Wind (20 ft)........Northeast winds 7 to 15 mph with gusts up to 20
                    mph.
CWR.................0 percent.
LAL.................1.
Mixing height.......7900-8400 ft agl, decreasing to 100-600 ft agl
                    in the late evening and overnight.
Transport winds.....West 5 to 10 mph, increasing to north 20 to 25
                    mph late in the evening, then, decreasing to 12
                    to 20 mph after midnight.
Smoke dispersal.....Poor (3100-47900).
Haines Index........6 (high).

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........27  30  33  36  39  43  46  49  53  56  59  63
Weather cov.....
Weather type....
Tstm cov........
Temp............90  86  81  76  73  72  71  69  67  65  63  62
RH..............32  37  46  54  62  64  66  70  73  75  81  81
20 FT wind dir..N   N   N   N   N   N   N   N   N   N   N   NE
20 FT wind spd..12  15  15  14  12  9   7   7   8   9   10  10
20 FT wind gust.15  20  20  20  15  15  10  10  10  15  15  15

.SUNDAY...

Sky/weather.........Partly sunny (50-60 percent cloud). A slight
                    chance of showers and thunderstorms in the
                    afternoon.
Max temperature.....78-83.
Min humidity........34-39 percent.
Wind (20 ft)........East winds 9 to 12 mph. Gusty and erratic winds
                    expected near thunderstorms in the afternoon.
CWR.................0 percent.
LAL.................1 until 1300, then 2.
Mixing height.......100-600 ft agl, increasing to 5100-5600 ft agl.
Transport winds.....Northeast 17 to 25 mph, becoming east 10 to 15
                    mph late.
Smoke dispersal.....Poor (4900-43800), increasing to fair
                    (55800-59500) in the afternoon.
Haines Index........5 (moderate).

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........66  64  62  60  58  55  53  51  50  48  46  44
Weather cov.....                        SCH SCH SCH SCH SCH SCH
Weather type....                        RW  RW  RW  RW  RW  RW
Tstm cov........                        SCH SCH SCH SCH SCH SCH
Temp............62  63  65  67  70  73  75  77  78  79  80  80
RH..............78  75  68  63  57  49  46  42  39  38  36  36
20 FT wind dir..NE  NE  NE  NE  NE  NE  NE  NE  E   E   E   E
20 FT wind spd..12  12  12  12  12  10  10  10  9   9   9   10
20 FT wind gust.15  15  15  15  15  15  15  15  15  15  15  15

$$
Forecaster...Mohr
Requested by...LELAND H BLACK
Type of request...PRESCRIBED
.TAG 1714590.0/ABR
.EMAIL leland.black@bia.gov


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