Suppression Forecast
Issued by NWS Sioux Falls, SD

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FNUS73 KFSD 221401
FWSFSD

Spot Forecast for Song Hawk CRP...SD-YAA
National Weather Service Sioux Falls SD
901 AM CDT Sat Apr 22 2017

If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
The main weather feature today is high pressure. Early this morning,
it currently extends from southwest Nebraska to east central South
Dakota. Because of this, south central to southeast South Dakota is
experiencing very light winds this morning, trying to become out of
a west to northwest direction. Your observation is showing calm
winds which makes sense. Therefore the wind directions this morning
could be a bit variable as local terrain influences could out weigh
the influences of the high pressure system. However the high will
track a bit further eastward late this morning and afternoon. This
will bend the winds around to a southwest direction by midday and
early afternoon. Wind speeds toward midday and afternoon will be in
the 5 to 10 mph range. One thing to watch for is smoke dispersion.
It will be poor to fair today. The mixing heights are high, but
the transport winds are light.

Sunday will be a breezy day, with southwest winds of 20 to 30 mph
in your area.


.TODAY...

Max temperature.....63-68.
Min humidity........29 percent.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......CLR CLR CLR CLR CLR CLR CLR CLR CLR CLR
SKY (%).........3   1   1   2   2   3   2   2   3   2
WEATHER COV.....
WEATHER TYPE....
TEMP............43  48  53  57  59  61  63  64  65  66
DEWPOINT........38  38  38  38  37  36  35  34  33  33
RH..............82  68  57  49  44  39  35  32  30  29
20 FT WIND DIR..WNW WNW NW  NW  W   WSW SW  SW  SW  SW
20 FT WIND SPD..2   2   3   4   5   5   5   5   5   6
20 FT WIND GUST.        5   6   8   8   9   8   9
SMOKE DISPERSAL.PR  PR  PR  PR  FR  FR  FR  FR  FR  FR
MIX HGT (KFT)...0.8 1.3 1.8 3.0 4.3 5.5 5.6 5.7 5.9 5.8
TRANSP WIND DIR.NNW NNW NNW NW  NW  WNW W   W   WSW WSW
TRANSP WIND SPD.3   3   3   4   5   5   6   6   5   5
CHC OF PCPN (%).0   0   0   0   0   0   0   0   0   0
HAINES INDEX....4   4   4   4   4   4   4   4   4   4

.TONIGHT...

Min temperature.....38-43.
Max humidity........70 percent.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY COVER.......CLEAR  CLEAR  CLEAR  CLEAR  CLEAR  CLEAR
SKY (%).........2      1      0      0      1      2
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............65     60     53     49     47     44
DEWPOINT........34     36     34     34     34     34
RH..............31     41     48     56     60     68
20 FT WIND......SSW 6  S 6    S 7    S 7    S 7    SSW 7
20 FT WIND GUST.                     10
SMOKE DISPERSAL.FAIR   POOR   POOR   POOR   POOR   POOR
MIX HGT (FT)....5700   300    300    300    300    300
TRANSPORT WIND..WSW 6  SW 7   S 8    S 8    S 8    SSW 9
CHC OF PCPN (%).0      0      0      0      0      0
HAINES INDEX....4      4      4      4      4      5

.SUNDAY...

Max temperature.....69-74.
Min humidity........25 percent.

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
SKY COVER.......CLEAR  CLEAR  MCLEAR MCLEAR MCLEAR PCLDY
SKY (%).........3      5      7      11     17     26
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............41     45     56     63     68     72
DEWPOINT........33     34     37     36     34     34
RH..............73     65     49     36     28     25
20 FT WIND......S 8    SSW 10 SSW 15 SSW 20 SSW 22 S 22
20 FT WIND GUST.10     15     20     30     30     30
SMOKE DISPERSAL.POOR   POOR   FAIR   EXCEL  EXCEL  EXCEL
MIX HGT (FT)....300    500    1100   3300   5100   6300
TRANSPORT WIND..S 9    SSW 16 SSW 26 SSW 30 SSW 31 SSW 33
CHC OF PCPN (%).0      0      0      0      0      0
HAINES INDEX....5      5      5      4      4      5

$$
Forecaster...MJ
Requested by...Jalen Bernie
Type of request...PRESCRIBED
.TAG 1707384.1/FSD


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