Suppression Forecast
Issued by NWS Sioux Falls, SD

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000
FNUS73 KFSD 031234
FWSFSD

SPOT FORECAST FOR WATERMAN - STAMMER...IOWA DNR
NATIONAL WEATHER SERVICE SIOUX FALLS SD
734 AM CDT TUE MAY 3 2016

IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
CALM WINDS TO START THE MORNING SHOULD SETTLE ON A WESTERLY DIRECTION
BY MID-MORNING AS MIXING BEGINS...WITH SPEEDS INCREASING MORE SHARPLY
BY 11 AM AS THE MIXED LAYER DEEPENS. THE INCREASED WIND SPEEDS AND
MIXING HEIGHT WILL RESULT IN MARKED IMPROVEMENT IN SMOKE DISPERSAL
BY 11 AM AS WELL.

A COLD FRONT WILL DROP INTO THE REGION THIS EVENING...RESULTING IN
A SHIFT TO NORTHWEST-NORTH WINDS AFTER 6 PM. ISOLATED VERY LIGHT RAIN
SHOWERS MAY DEVELOP BEHIND THE FRONT...WHICH MAY BE ACCOMPANIED BY
BRIEF WIND GUSTS IN EXCESS OF 20 MPH. THE NORTHERLY WINDS WILL TAPER
OFF OVERNIGHT...BUT WILL INCREASE TO 15 TO 20 MPH AGAIN WEDNESDAY.

.TODAY...

MAX TEMPERATURE.....68-73.
MIN HUMIDITY........36 PERCENT.

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM
SKY COVER.......CLR MCR MCR MCR MCR MCR PC  PC  PC  PC  PC  PC
% SKY COVER.....2   7   11  16  20  23  27  28  29  31  30  36
WEATHER COV.....
WEATHER TYPE....
TEMP............44  46  52  56  60  63  66  68  70  71  71  69
RH..............76  76  66  59  53  46  40  37  36  36  36  39
DEWPOINT........37  39  41  42  43  42  41  41  42  43  43  43
20 FT WIND DIR..WNW WNW W   W   W   W   W   W   W   W   W   WNW
20 FT WIND SPD..3   5   7   8   10  13  14  16  18  18  17  16
20 FT WIND GUST.5           10  15  15  20  25  25  30  25  25
SMOKE DISPERSAL.PR  PR  PR  PR  GD  EX  EX  EX  EX  EX  EX  EX
CHC OF PCPN (%).0   0   0   0   0   0   0   0   0   0   0   0
MIX HGT (KFT)...0.3 0.4 0.9 1.2 2.9 4.6 6.2 6.4 6.6 6.9 7.1 7.0
TRANSP WIND DIR.W   W   W   W   W   W   W   W   W   WNW WNW WNW
TRANSP WIND SPD.5   8   12  14  16  18  20  22  24  25  25  25
HAINES INDEX....4   4   4   4   4   4   4   4   3   3   3   3

.TONIGHT...

MIN TEMPERATURE.....39-44.
MAX HUMIDITY........76 PERCENT.

TIME (CDT)      7 PM   9 PM   11 PM  1 AM   3 AM   5 AM
SKY COVER.......PCLDY  MCLDY  PCLDY  MCLEAR CLEAR  CLEAR
% SKY COVER.....43     59     44     7      4      3
WEATHER COV.....       S CHC
WEATHER TYPE....NONE   RNSHWR NONE   NONE   NONE   NONE
TEMP............67     60     54     50     47     44
RH..............42     53     61     61     68     76
DEWPOINT........43     43     41     37     37     37
20 FT WIND......WNW 15 NW 15  NW 15  N 15   N 12   N 9
20 FT WIND GUST.20     20     20     20     15     10
SMOKE DISPERSAL.EXCEL  GOOD   POOR   POOR   POOR   POOR
CHC OF PCPN (%).0      20     0      0      0      0

.WEDNESDAY...

MAX TEMPERATURE.....63-68.
MIN HUMIDITY........30 PERCENT.

TIME (CDT)      7 AM   9 AM   11 AM  1 PM   3 PM   5 PM
SKY COVER.......CLEAR  CLEAR  CLEAR  CLEAR  CLEAR  CLEAR
% SKY COVER.....2      2      3      4      2      1
WEATHER COV.....
WEATHER TYPE....NONE   NONE   NONE   NONE   NONE   NONE
TEMP............43     49     56     61     65     66
RH..............76     63     48     38     31     30
DEWPOINT........36     37     37     35     34     34
20 FT WIND......NNW 9  NNW 12 NNW 14 NNW 15 NNW 15 NNW 15
20 FT WIND GUST.10     15     20     20     20     20
SMOKE DISPERSAL.POOR   FAIR   EXCEL  EXCEL  EXCEL  EXCEL
CHC OF PCPN (%).0      0      0      0      0      0
MIX HGT (FT)....300    2500   4100   5200   5700   6200
TRANSPORT WIND..NNW 10 N 16   N 20   NNW 20 NNW 20 NNW 20
HAINES INDEX....4      4      4      3      4      4

WEATHER TYPE ABBREVIATIONS

1)  T  = THUNDERSTORMS
2)  R  = RAIN
3)  RW = RAIN SHOWERS
4)  L  = DRIZZLE
5)  ZR = FREEZING RAIN
6)  ZL = FREEZING DRIZZLE
7)  S  = SNOW
8)  SW = SNOW SHOWERS
9)  IP = ICE PELLETS
10) F  = FOG
11) ZF = FREEZING FOG
12) IC = ICE CRYSTALS
13) H  = HAZE
14) BS = BLOWING SNOW
15) K  = SMOKE
16) BD = BLOWING DUST
17) FR = FROST

$$
FORECASTER...JH
REQUESTED BY...RORY MARTINSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20160503.WATER.01/FSD



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