221
FNUS75 KRIW 121308
FWSRIW

Spot Forecast for Packtrail Piles...USFS
National Weather Service Riverton WY
608 AM MST Wed Nov 12 2025

Forecast is based on ignition time of 0900 MST on November 12.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

Quiet weather today with light winds through noon before becoming
about 10 to 15 mph at most during the afternoon out of the west.
As such, smoke dispersal will go from poor to fair with the
stronger winds in the afternoon through about sunset. Otherwise,
Mainly clear skies, no precipitation, and above average
temperatures with similar conditions Thursday as well ahead of the
next system come Friday into the weekend.

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

.REST OF TODAY...

Sky/weather.........Mostly sunny (40-50 percent) then becoming
                    mostly cloudy (70-80 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 45.
Min humidity........45 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Southwest 10 to 15 mph.
Mixing height.......1500 ft AGL until 1200, then 3000 ft AGL until
                    1700, then 500 ft AGL.
Transport winds.....Southwest 9 to 16 mph.
Smoke dispersal.....Poor until 1300, then poor early in the morning
                    increasing to fair in the afternoon until 1500,
                    then poor.

TIME (MST)      9 AM      NOON      3 PM
Sky (%).........30        35        60
Weather cov.....
Weather type....NONE      NONE      NONE
Tstm cov........
CWR.............0         0         0
Chc of pcpn (%).0         0         0
Chc of thdr (%).0         0         0
Temp............35        44        45
RH..............72        51        51
20 FT wind......S 5G6     W 6G10    W 6G7
Ridgetop wind...S 10      W 15      W 10
Mix hgt (ft)....500       2500      2000
Transport wind..S 10      W 14      W 13
SDspl kt-ft/10004         29        23

.TONIGHT...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    partly cloudy (30-40 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 28.
Max humidity........75 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......South 10 to 15 mph.
Mixing height.......500 ft AGL.
Transport winds.....Southwest 9 to 13 mph.
Smoke dispersal.....Poor.

TIME (MST)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........85        80        45        25
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
CWR.............0         0         0         0
Chc of pcpn (%).0         0         0         0
Chc of thdr (%).0         0         0         0
Temp............38        34        32        30
RH..............64        69        72        72
20 FT wind......SW 5G6    S 6G7     S 6G10    S 6G7
Ridgetop wind...SW 10     S 10      S 15      S 10
Mix hgt (ft)....500       500       500       500
Transport wind..S 10      SW 12     SW 13     S 12
SDspl kt-ft/10003         3         4         3

.THURSDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 44.
Min humidity........51 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Southwest 10 to 15 mph.
Mixing height.......500 ft AGL until 0800, then 2500 ft AGL after
                    0900 until 1200, then 4000 ft AGL until 1600,
                    then 1500 ft AGL.
Transport winds.....Southwest 9 to 17 mph until 1300, then 15 to 22
                    mph until 1700, then around 12 mph.
Smoke dispersal.....Poor until 1200, then fair early in the morning
                    increasing to good in the afternoon until 1400,
                    then good until 1500, then fair until 1600,
                    then poor.

TIME (MST)      6 AM      9 AM      NOON      3 PM
Sky (%).........30        10        15        10
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
CWR.............0         0         0         0
Chc of pcpn (%).0         0         0         0
Chc of thdr (%).0         0         0         0
Temp............29        33        41        41
RH..............73        65        53        54
20 FT wind......S 4G6     S 5G6     SW 6G7    SW 6G7
Ridgetop wind...S 10      S 10      SW 10     SW 10
Mix hgt (ft)....500       1000      3500      2500
Transport wind..SW 9      SW 10     SW 17     SW 18
SDspl kt-ft/10002         7         50        43

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY...
Snow showers and chance of showers. Lows in the lower 30s. Highs
in the upper 30s. Southwest winds around 8 mph.
.SATURDAY...
Mostly cloudy. Snow showers likely. Lows in the upper 20s. Highs
in the mid 30s. Southwest winds around 7 mph.
.SUNDAY...
Mostly cloudy. Chance of snow showers. Lows in the mid 20s. Highs
in the upper 30s. Light winds.

$$
Forecaster...Lowe
Requested by...E Berman
Type of request...PRESCRIBED
.TAG 2525543.0/RIW
.DELDT 11/12/25
.FormatterVersion 2.0.0
.EMAIL eli.berman@usda.gov