Suppression Forecast
Issued by NWS Sioux Falls, SD

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138
FNUS73 KFSD 271121
FWSFSD

Spot Forecast for Loon Lake  Fire...USFWS
National Weather Service Sioux Falls SD
621 AM CDT Sun Apr 27 2025

If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

Little change from previous discussion. Cloudy skies and mainly
dry for today. Winds will remain southeasterly today, gusting 25
to 30 mph through the day. With increasing low level moisture,
afternoon RH values will run near 70 percent.

For Monday, shower and thunderstorm chances will be likely in the
afternoon and evening - with a few severe storms possible.
Temperatures will climb to near 80, with afternoon RH around 50
percent. Winds will be southerly, gusting 30 to 40 mph.


.TODAY...

Max temperature.....Around 63.
Min humidity........66 percent.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......MC  MC  MC  MC  MC  CDY CDY CDY CDY CDY CDY CDY
Sky (%).........61  65  61  70  84  90  93  93  94  93  92  91
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).10  10  10  10  10  10  10  10  10  10  10  10
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   10  10
Temp............47  46  49  51  53  54  55  55  56  57  59  60
Dewpoint........40  41  42  44  45  45  46  47  47  48  49  49
RH..............78  83  77  77  75  73  70  73  71  71  69  67
20 FT wind dir..SSE SSE SSE SSE SSE SSE SSE SSE SSE SSE SSE SSE
20 FT wind spd..15  15  17  18  21  21  21  21  21  21  22  21
20 FT wind gust.23  24  25  26  28  29  30  30  31  31  31  30
Mix hgt (kft)...0.7 0.5 0.7 1.3 1.7 1.6 1.6 1.7 1.8 1.8 1.9 1.9
Transp wind dir.SSE S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.18  18  21  25  25  25  25  25  25  25  25  25
Smoke Dispersal.PR  PR  PR  FR  GD  GD  GD  GD  GD  GD  GD  GD

.TONIGHT...

Min temperature.....Around 55.
Max humidity........93 percent.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky cover.......CDY CDY CDY CDY CDY CDY CDY CDY CDY CDY CDY CDY
Sky (%).........95  96  94  96  97  98  99  100 100 100 100 99
Weather cov.....        SCH SCH CHC CHC CHC CHC CHC CHC CHC CHC
Weather type....        RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........        SCH SCH CHC CHC CHC CHC CHC CHC CHC CHC
Chc of pcpn (%).10  10  20  20  30  30  30  40  50  40  40  50
Chc of thdr (%).10  10  20  20  30  30  30  30  30  30  40  40
Temp............60  61  59  57  56  56  56  56  56  57  57  56
Dewpoint........49  50  50  50  51  51  52  52  53  53  54  54
RH..............67  66  72  77  83  83  86  86  90  88  89  93
20 FT wind dir..SSE SSE SSE SSE SSE SSE SSE SSE SSE SSE SSE SSE
20 FT wind spd..21  20  20  20  20  20  20  21  21  21  21  21
20 FT wind gust.31  30  29  29  30  30  30  30  30  30  31  32
Mix hgt (kft)...1.7 1.2 0.6 0.6 0.9 0.9 0.8 0.8 0.7 0.7 0.7 0.8
Transp wind dir.S   SSE SSE S   S   S   S   S   S   S   S   S
Transp wind spd.24  25  23  23  25  26  25  24  23  24  26  26
Smoke Dispersal.GD  FR  PR  PR  FR  FR  FR  FR  FR  FR  FR  FR

.MONDAY...

Max temperature.....Around 80.
Min humidity........48 percent.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky cover.......CDY CDY CDY CDY CDY MC  MC  MC  MC  PC  PC  PC
Sky (%).........98  97  94  91  88  84  80  76  62  49  35  32
Weather cov.....LKY LKY LKY LKY             SCH SCH SCH DEF DEF
Weather type....RW  RW  RW  RW              RW  RW  RW  RW  RW
Tstm cov........CHC SCH SCH SCH             SCH SCH SCH DEF DEF
Chc of pcpn (%).60  70  70  70  10  10  10  20  20  20  90  90
Chc of thdr (%).40  20  20  20  10  10  10  20  20  20  70  70
Temp............58  59  60  62  68  70  73  77  80  80  79  78
Dewpoint........55  56  57  58  59  61  62  62  62  61  59  57
RH..............89  89  89  86  73  73  69  59  55  52  50  48
20 FT wind dir..S   S   S   S   S   S   S   S   S   SSW SSW SSW
20 FT wind spd..21  22  22  23  24  24  25  25  26  28  28  25
20 FT wind gust.32  31  33  35  35  35  36  37  38  39  39  36
Mix hgt (kft)...0.9 0.9 1.2 1.3 1.5 1.7 2.0 2.4 2.8 3.6 4.4 3.5
Transp wind dir.S   S   S   S   S   S   S   S   SSW SSW SSW SSW
Transp wind spd.26  25  26  29  31  35  36  37  43  44  41  36
Smoke Dispersal.FR  FR  FR  GD  GD  GD  EX  EX  EX  EX  EX  EX

$$
Forecaster...JM
Requested by...Dan Paulson
Type of request...WILDFIRE
.TAG 2511887.0/FSD
.DELDT 04/27/25
.FormatterVersion 2.0.0