Suppression Forecast
Issued by NWS Sioux Falls, SD

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000
FNUS73 KFSD 241251
FWSFSD

Spot Forecast for Horseshoe Bend...Dickinson County Conservation
National Weather Service Sioux Falls SD
751 AM CDT Mon Apr 24 2017

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

.DISCUSSION...
Today will be a windy and a relatively dry day across the area.
Winds will quickly increase this morning with gusts over 30 mph
expected by 10 AM. Wind are expected to remain out of the south
through the day. Temperatures will again rise to around 70
degrees and combined with a relatively dry air mass the relative
humidity will fall from around 65% this morning into the mid 30s
during the afternoon. There is a strong low level inversion early
this morning which will keep mixing heights below 1000 ft through
10 AM. The mixing heights will rapidly increase late this morning
and early this afternoon rising above 3000 by early this
afternoon. There is a slight chance for a shower this afternoon
but it is most likely to remain dry through the day. If a shower
were to occur, it would likely result in locally higher wind
gust - approaching 40 mph - with a brief change in direction.

Temperatures this evening will remain mild with winds decreasing
in speed and gradually changing to southwest after midnight. A
cold front will move through late tonight switching the winds to
northwest. Much colder air will accompany the front with
widespread rain moving into the area by Tuesday afternoon.

.TODAY...

Max temperature.....67-72.
Min humidity........34 percent.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY COVER.......MC  MC  MC  MC  MC  MC  MC  MC  MC  MC  MC  MC
SKY (%).........70  74  76  79  81  81  81  81  78  76  73  73
WEATHER COV.....                        SCH SCH SCH SCH SCH SCH
WEATHER TYPE....                        RW  RW  RW  RW  RW  RW
TEMP............48  49  50  53  57  61  64  66  66  67  68  69
DEWPOINT........35  37  39  39  39  39  38  37  38  38  39  40
RH..............60  63  66  59  51  44  38  34  36  34  34  35
20 FT WIND DIR..S   S   S   S   S   S   S   S   S   S   S   S
20 FT WIND SPD..13  16  18  21  24  26  28  28  26  25  24  24
20 FT WIND GUST.15  25  30  30  35  35  35  35  35  35  35  35
SMOKE DISPERSAL.PR  PR  FR  GD  GD  EX  EX  EX  EX  EX  EX  EX
MIX HGT (KFT)...0.3 0.3 0.8 1.4 1.9 2.4 2.8 3.3 4.4 5.5 6.6 5.7
TRANSP WIND DIR.S   S   S   S   S   S   S   S   S   S   S   S
TRANSP WIND SPD.18  17  26  35  40  40  39  38  39  40  40  38
CHC OF PCPN (%).0   0   0   0   0   10  20  20  20  20  20  20
HAINES INDEX....5   5   5   5   5   5   5   5   5   4   4   4

.TONIGHT...

Min temperature.....41-46.
Max humidity........89 percent.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
SKY COVER.......MCLDY  MCLDY  MCLDY  MCLDY  MCLDY  MCLDY
SKY (%).........72     73     74     68     66     67
WEATHER COV.....S CHC
WEATHER TYPE....RNSHWR NONE   NONE   NONE   NONE   NONE
TEMP............68     64     58     54     51     48
DEWPOINT........42     44     45     45     44     43
RH..............39     48     62     71     77     83
20 FT WIND......S 21   S 14   S 10   SSW 9  WSW 9  NNW 8
20 FT WIND GUST.30     20     15     15     15     15
SMOKE DISPERSAL.EXCEL  FAIR   POOR   POOR   POOR   POOR
MIX HGT (FT)....4800   1200   300    300    300    300
TRANSPORT WIND..S 35   S 23   S 12   SSW 10 WSW 9  NNW 9
CHC OF PCPN (%).10     10     10     10     10     10
HAINES INDEX....4      4      3      4      4      3

$$
Forecaster...Schumacher
Requested by...Aric Ping
Type of request...PRESCRIBED
.TAG 1707649.0/FSD



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