Suppression Forecast
Issued by NWS Aberdeen, SD

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000
FNUS73 KABR 181328
FWSABR

Spot Forecast for GREEN GRASS RX...SD-CRA
National Weather Service Aberdeen SD
828 AM CDT Fri Aug 18 2017

Forecast is based on ignition time of 0800 MDT on August 18.
If conditions become unrepresentative...contact the National Weather
Service in Aberdeen SD.

.DISCUSSION...
Mostly sunny and dry conditions are expected today, with light winds
this morning becoming northerly this afternoon. Minimum relative
humidity values will be in the 25 to 30 percent range late this
afternoon.

.TODAY...

Sky/weather.........Sunny (10-20 percent cloud). Isolated showers
                    early in the morning.
Max temperature.....84-89.
Min humidity........25-30 percent.
Wind (20 ft)........Southwest winds around 6 mph early in the
                    morning, becoming light and variable, then,
                    becoming west around 7 mph early in the
                    morning, becoming north 9 to 16 mph with gusts
                    up to 25 mph.
CWR.................0 percent.
LAL.................1.
Mixing height.......100-600 ft agl, increasing to 10300-11300 ft
                    agl.
Transport winds.....Northwest 14 to 19 mph, increasing to 22 to 27
                    mph in the late morning and early afternoon,
                    then, decreasing to 15 to 20 mph early.
Smoke dispersal.....Poor, increasing to good late in the morning,
                    then, increasing to excellent in the afternoon.
Haines Index........6 (high).

TIME (MDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........18  16  15  14  13  13  13  12  11  11
Weather cov.....
Weather type....
Tstm cov........
Temp............66  70  74  78  80  82  83  84  85  86
RH..............72  63  53  43  39  35  33  31  29  27
20 FT wind dir..W   NW  N   N   N   N   N   N   N   N
20 FT wind spd..7   9   13  15  16  16  14  13  12  10
20 FT wind gust.    10  15  20  25  25  20  15  15  15

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent cloud).
Min temperature.....57-62.
Max humidity........67-72 percent.
Wind (20 ft)........North winds 8 to 9 mph, becoming south late in
                    the evening.
CWR.................0 percent.
LAL.................1.
Mixing height.......9000-9500 ft agl, decreasing to 100-600 ft agl
                    in the late evening and overnight.
Transport winds.....Northwest 8 to 13 mph, becoming south 12 to 17
                    mph in the late evening.
Smoke dispersal.....Good, decreasing to poor (3000-3700) in the
                    late evening and overnight.
Haines Index........6 (high).

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........10  9   9   8   8   8   7   8   8   8   9   9
Weather cov.....
Weather type....
Tstm cov........
Temp............84  80  75  70  66  64  63  63  62  61  60  59
RH..............29  33  39  48  56  62  65  65  67  69  70  72
20 FT wind dir..N   N   NE  E   E   SE  SE  SE  S   S   S   S
20 FT wind spd..9   8   8   8   8   8   8   8   8   8   9   9
20 FT wind gust.15  10  10  10  10  10  10  10  10  10  15  15

.SATURDAY...

Sky/weather.........Sunny (10-20 percent cloud).
Max temperature.....91-96.
Min humidity........19-24 percent.
Wind (20 ft)........Southwest winds 9 to 10 mph.
CWR.................0 percent.
LAL.................1.
Mixing height.......100-600 ft agl, increasing to 10500-11000 ft
                    agl.
Transport winds.....Southwest 12 to 21 mph.
Smoke dispersal.....Poor (3900-47300), increasing to very good
                    late.
Haines Index........6 (high).

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........9   9   8   8   8   7   7   7   6   6   13  19
Weather cov.....
Weather type....
Tstm cov........
Temp............60  63  68  73  78  83  86  89  91  93  93  92
RH..............69  64  55  47  41  35  31  26  23  21  21  23
20 FT wind dir..S   S   S   S   S   S   S   S   SW  SW  SW  W
20 FT wind spd..9   9   9   10  10  10  10  10  10  10  9   9
20 FT wind gust.15  15  15  15  15  15  15  15  15  15  15  15

$$
Forecaster...Parkin
Requested by...LELAND H BLACK
Type of request...PRESCRIBED
.TAG 1714545.0/ABR
.EMAIL leland.black@bia.gov



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