Suppression Forecast
Issued by NWS Sioux Falls, SD

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FNUS73 KFSD 071306
FWSFSD

Spot Forecast for Waterman Prairie Complex Fulk I South Unit...Iowa DNR
National Weather Service Sioux Falls SD
806 AM CDT Fri May 7 2021

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

.DISCUSSION...
Dry air remains in place today, with humidity levels again
falling to around 20 percent. Northerly wind speeds
are expected to be similar to Thursday, though perhaps less
gusty with peak gusts around 20 mph expected. This will lead
to good to excellent smoke dispersal, as mixing heights climb
above 4000 ft by late morning.

Rain showers spread east across the region Saturday into Saturday
evening, though locations east of US Highway 75 may not see any
substantial rain until after noon Saturday. Light showers linger
into Sunday, with dry conditions returning early next week.

.REST OF TODAY...

Max temperature.....60-65.
Min humidity........19 percent.

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......CLR CLR CLR CLR CLR MCR MCR MCR MCR
Sky (%).........4   4   3   4   4   6   7   8   7
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0
Temp............48  52  55  57  59  61  63  63  63
Dewpoint........30  28  26  25  24  23  22  21  21
RH..............49  39  32  29  26  23  21  20  20
20 FT wind dir..NNE NNE N   N   N   N   N   N   N
20 FT wind spd..10  13  12  12  12  12  12  10  10
20 FT wind gust.18  20  21  18  18  18  18  18  16
Mix hgt (kft)...2.0 2.9 4.0 4.7 4.9 5.3 5.5 5.5 5.5
Transp wind dir.NNE N   N   N   N   N   N   SSE N
Transp wind spd.18  20  20  18  18  18  16  16  15
Haines index....6   6   6   6   5   5   5   5   5
Smoke dispersal.FR  GD  GD  EX  EX  EX  EX  EX  EX

.TONIGHT...

Min temperature.....38-43.
Max humidity........55 percent.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky cover.......MCLEAR MCLEAR MCLEAR MCLEAR PCLDY  PCLDY
Sky (%).........6      7      9      15     27     38
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Chc of pcpn (%).0      0      0      0      0      0
Temp............62     56     48     44     42     42
Dewpoint........21     22     24     24     25     27
RH..............20     26     39     45     50     55
20 ft wind......NNE 10 NE 8   ENE 7  E 7    E 8    E 10
20 ft wind gust.16     12     13     13     16     20
Mix hgt (ft)....5300   1300   400    400    500    600
Transport wind..N 14   NE 9   ENE 10 E 12   E 16   E 18
Haines index....5      5      5      5      4      4
Smoke dispersal.GOOD   POOR   POOR   POOR   POOR   POOR

.SATURDAY...

Max temperature.....50-55.
Min humidity........44 percent.

TIME (CDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky cover.......PCLDY  MCLDY  MCLDY  MCLDY  MCLDY  MCLDY
Sky (%).........40     55     75     82     79     78
Weather cov.....              CHANCE CHANCE CHANCE LIKELY
Weather type....NONE   NONE   RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........                                   S CHC
Chc of pcpn (%).0      10     40     40     50     60
Temp............42     45     49     51     52     52
Dewpoint........28     28     29     31     32     33
RH..............57     51     46     46     46     48
20 ft wind......ESE 12 ESE 15 ESE 18 ESE 18 ESE 18 E 20
20 ft wind gust.21     24     28     28     28     28
Mix hgt (ft)....600    1100   2000   2600   2800   2700
Transport wind..ESE 20 ESE 23 ESE 26 ESE 26 E 28   E 26
Haines index....4      4      4      4      3      3
Smoke dispersal.POOR   FAIR   GOOD   GOOD   GOOD   GOOD

$$
Forecaster...Kalin
Requested by...Chris LaRue
Type of request...PRESCRIBED
.TAG 2111898.0/FSD
.DELDT 05/07/21
.FormatterVersion 1.0.25


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