819
FNUS75 KRIW 291131
FWSRIW

Spot Forecast for Ridge...IA CPC
National Weather Service Riverton WY
531 AM MDT Sun Jun 29 2025

Forecast is based on forecast start time of 0700 MDT on June 29.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

Clear skies this morning with light winds. Clouds will increase
through the afternoon as virga showers/thunderstorms develop
toward the southern end of Flaming Gorge and the Unita Mountains.
Strong outflow winds will be possible onsite from this convection
between 1400 and 2000. Winds will decrease around sunset,
eventually turning to the east-northeast and increasing 15-20 mph, as
a cold front moves over the area around 2400/0000. These winds
will become easterly toward sunrise Monday morning and decrease
through the rest of the morning. Skies will be clear with dry
conditions Monday.

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

.TODAY...

Sky/weather.........Sunny (20-30 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Chance of thunder...5 percent.
Max temperature.....Around 86.
Min humidity........16 percent.
Wind (20 ft)........Light winds until 1200, then west 8 to 13 mph
                    with gusts to around 19 mph.
Ridgetop wind.......Southwest around 10 mph until 1000. West around
                    20 mph after 1400.
Mixing height.......2000 ft AGL until 1000, then 7500 ft AGL until
                    1200, then 12000 ft AGL until 1400, then
                    14000 ft AGL until 1700, then 9000 ft AGL.
Transport winds.....Southwest around 8 mph until 0900, then west 9
                    to 18 mph until 1300, then 21 to 22 mph.
Smoke dispersal.....Poor until 1100, then excellent after 1200.

TIME (MDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........10  5   0   0   0   0   5   10  30  40  50
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0
Chc of pcpn (%).0   0   0   0   10  10  10  10  10  10  10
Chc of thdr (%).0   0   0   0   0   0   0   0   0   10  10
Temp............57  63  68  73  77  80  82  86  86  84  84
RH..............45  35  32  27  24  20  18  16  16  17  17
20 FT wind dir..S   SW  W   W   W   W   W   NW  W   W   W
20 FT wind spd..3   3   4   5   6   8   10  12  13  13  12
20 FT wind gust.        6   7   8   13  16  18  19  19  18
Ridge wind dir..S   SW  W   W   W   W   W   NW  W   W   W
Ridge wind spd..10  10  10  10  10  15  15  20  20  20  20
Mix hgt (kft)...1.0 1.0 2.0 3.5 7.5 11  12  14  14  13  9.0
Transp wind dir.S   SW  W   W   W   W   W   W   W   W   W
Transp wind spd.8   8   9   10  14  18  22  22  22  21  22
SDspl kt-ft/10006   7   18  34  88  170 232 258 262 228 173

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    clear (0-10 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...3 percent.
Min temperature.....Around 52.
Max humidity........65 percent.
Wind (20 ft)........Southwest winds 10 to 14 mph with gusts to
                    around 21 mph until 2000, then northeast 7
                    to 8 mph with gusts to around 13 mph after
                    2400.
Ridgetop wind.......West 15 to 20 mph until 2200, then northeast
                    10-15 mph after 2400.
Mixing height.......7500 ft AGL until 2000. 1000 ft AGL after 2100.
Transport winds.....West 13 to 22 mph until 2200, then northwest
                    around 12 mph until 2400, then east 16 to 20
                    mph.
Smoke dispersal.....Excellent early in the evening decreasing to
                    Poor after 2100.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........45  35  30  15  5   0   0   0   0   0   5   5
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............81  81  80  74  71  68  65  61  59  57  54  53
RH..............18  17  17  19  21  22  27  33  43  51  58  61
20 FT wind dir..SW  W   NW  W   NW  N   NE  NE  NE  E   E   E
20 FT wind spd..14  10  8   6   5   5   7   8   8   7   7   6
20 FT wind gust.21  16  13  10  7   7   11  13  13  11  11  10
Ridge wind dir..SW  W   NW  W   NW  N   NE  NE  NE  E   E   E
Ridge wind spd..20  15  15  15  10  10  15  15  15  15  15  15
Mix hgt (kft)...8.0 7.5 3.5 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
Transp wind dir.W   W   W   W   W   NW  NE  NE  E   E   E   E
Transp wind spd.22  20  16  13  12  12  16  18  20  18  18  16
SDspl kt-ft/1000155 126 50  9   8   8   13  14  14  14  15  12

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY...
Mostly clear. Lows in the upper 50s. Highs in the upper 80s.
Light winds.
.WEDNESDAY...
Partly cloudy. Lows in the upper 50s. Highs in the upper 80s.
Light winds.
.THURSDAY...
Mostly cloudy with slight chance of showers and thunderstorms.
Lows in the upper 50s. Highs in the upper 70s. Southwest winds
around 7 mph.

$$
Forecaster...LaVoie
Requested by...WYCPC
Type of request...WILDFIRE
.TAG 2516856.0/RIW
.DELDT 06/29/25
.FormatterVersion 2.0.0
.EMAIL wycpc@firenet.gov