Suppression Forecast
Issued by NWS Riverton, WY

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183
FNUS75 KRIW 041124
FWSRIW

Spot Forecast for Deadline Ridge RX...BLM
National Weather Service Riverton WY
524 AM MDT Wed Jun 4 2025

Forecast is based on ignition time of 0600 MDT on June 04.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

Partly cloudy skies with more sunshine than the past couple of
days. Relatively light west to southwesterly winds up to 15 mph.
Warmer temperatures this afternoon into the upper 50s to near 60,
giving way to minimum relative humidity values down into the mid
to upper 20 percent range. Otherwise, dry conditions expected
with calm winds after sunset and overnight as temperatures drop
once again into the upper 30s.

Warming trend continues for the remainder of the work week and
into the weekend with no significant winds expected nor
precipitation chances remaining mainly dry.

...Thunderstorms imply strong gusty and erratic winds...

.TODAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...2 percent.
Max temperature.....Around 58.
Min humidity........28 percent.
Wind (20 ft)........Light winds until 1300, then west 7 to 8 mph.
Ridgetop wind.......West around 10 mph until 0800, then southeast
                    until 1100, then southwest.
Mixing height.......1000 ft AGL until 0900. 9000 ft AGL after 1300.
Transport winds.....West 8 to 15 mph.
Smoke dispersal.....Poor until 0900. Good early in the morning
                    increasing to very good in the afternoon after
                    1200.

TIME (MDT)      MID 1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10A 11A
Sky (%).........10  15  5   5   0   10  10  25  25  30  20  30
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............41  42  43  45  49  51  53  55  57  58  57  58
RH..............54  52  50  47  42  39  36  31  33  32  28  28
20 FT wind dir..N   E   E   SE  S   SW  SW  SW  SW  W   W   W
20 FT wind spd..5   4   3   4   5   5   6   7   8   8   8   8
20 FT wind gust.6   5   4   6   6   7   10  10  12  12  12  12
Ridge wind dir..W   W   E   SE  S   SW  SW  SW  SW  W   W   W
Ridge wind spd..10  10  10  10  10  10  15  15  15  15  15  15
Mix hgt (kft)...0.5 0.5 1.0 3.0 4.5 6.0 7.5 8.0 8.5 9.0 9.0 9.0
Transp wind dir.W   W   W   W   W   SW  SW  SW  SW  W   W   W
Transp wind spd.10  9   8   9   10  10  13  14  15  15  15  15
SDspl kt-ft/10003   4   5   24  39  52  83  95  110 116 116 117

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...7 percent.
Min temperature.....Around 37.
Max humidity........72 percent.
Wind (20 ft)........West winds 7 to 8 mph until 2200, then
                    northwest around 7 mph until 2400, then east
                    until 0100, then light.
Ridgetop wind.......Northwest around 15 mph until 2400, then
                    southeast until 0300, then southwest.
Mixing height.......9000 ft AGL until 1900. 500 ft AGL after 2100.
Transport winds.....West 14 to 15 mph until 2100, then north until
                    2400, then northeast 12 to 14 mph until 0200,
                    then south around 10 mph until 0400, then
                    southwest.
Smoke dispersal.....Very good early in the evening decreasing to
                    good late in the night until 2000. Poor after
                    2100.

TIME (MDT)      12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P
Sky (%).........35  40  50  40  45  50  30  35  20  20  15  15
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).10  10  10  10  10  10  0   0   0   0   0   0
Chc of thdr (%).10  10  10  10  10  10  0   0   0   0   0   0
Temp............58  55  52  49  47  45  43  43  41  40  39  37
RH..............30  32  36  43  47  52  56  59  64  66  70  71
20 FT wind dir..W   W   W   NW  NW  NW  E   SE  SE  S   S   SW
20 FT wind spd..8   8   7   8   7   7   7   6   5   5   5   5
20 FT wind gust.12  12  11  11  10  10  10  7   6   6   6   6
Ridge wind dir..W   W   W   NW  NW  NW  E   SE  SE  S   S   SW
Ridge wind spd..15  15  15  15  15  15  15  10  10  10  10  10
Mix hgt (kft)...9.0 6.5 3.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Transp wind dir.W   W   NW  NW  N   N   N   NE  SE  SW  SW  W
Transp wind spd.15  15  14  15  14  14  14  12  10  10  10  10
SDspl kt-ft/1000117 83  38  5   4   4   4   3   2   2   2   2

.THURSDAY...

Sky/weather.........Mostly sunny (30-40 percent).
CWR.................1 percent.
Chance of pcpn......10 percent.
Chance of thunder...7 percent.
Max temperature.....Around 60.
Min humidity........29 percent.
Wind (20 ft)........Light winds until 1400, then west 8 to 12 mph
                    with gusts to around 17 mph.
Ridgetop wind.......South around 10 mph until 0900, then southeast
                    until 1200, then southwest until 1500, then
                    west 15 to 20 mph.
Mixing height.......1500 ft AGL until 0900. 9000 ft AGL after 1300.
Transport winds.....West 9 to 18 mph until 1700, then around 20
                    mph.
Smoke dispersal.....Poor until 0800. Very good early in the morning
                    increasing to excellent in the afternoon after
                    1600.

TIME (MDT)      MID 1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10A 11A
Sky (%).........15  20  20  20  35  40  50  45  40  40  35  35
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   0   0   10  10  10  10  10  10
Chc of thdr (%).0   0   0   0   0   0   10  10  10  10  10  10
Temp............37  41  45  48  51  53  55  56  57  59  58  59
RH..............72  62  61  54  48  44  36  33  32  29  30  32
20 FT wind dir..SW  S   SE  SE  E   E   S   W   W   W   W   W
20 FT wind spd..4   4   5   4   6   6   6   6   8   9   11  12
20 FT wind gust.6   6   6   6   7   7   7   10  12  13  14  17
Ridge wind dir..SW  S   SE  SE  E   E   S   W   W   W   W   W
Ridge wind spd..10  10  10  10  10  10  10  15  15  15  20  20
Mix hgt (kft)...0.5 0.5 1.5 2.5 4.0 5.5 7.0 7.5 8.0 8.5 9.0 9.0
Transp wind dir.SW  SW  SW  SW  W   W   W   W   W   W   W   W
Transp wind spd.9   9   10  9   12  12  12  13  15  16  18  20
SDspl kt-ft/10002   5   13  20  40  56  72  85  106 121 141 153

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Mostly clear. Lows around 40. Highs in the lower 60s. West winds
around 7 mph.
.SATURDAY...
Mostly clear. Lows in the mid 40s. Highs in the upper 60s. West
winds around 9 mph.
.SUNDAY...
Mostly clear. Lows in the mid 40s. Highs in the lower 70s. West
winds around 8 mph.

$$
Forecaster...Lowe
Requested by...Cassidy Sturdevant
Type of request...PRESCRIBED
.TAG 2515078.4/RIW
.DELDT 06/04/25
.FormatterVersion 2.0.0
.EMAIL cbsturdevant@blm.gov