715
FNUS75 KRIW 111338
FWSRIW

Spot Forecast for Yellowtail RX...BLM
National Weather Service Riverton WY
738 AM MDT Tue Mar 11 2025

Forecast is based on ignition time of 0714 MST on March 11.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

Dry conditions with above normal temperatures are again expected
today. Wind will generally be out of the south through the morning
and early afternoon before switching to out of the west between 1500
and 1700. Westerly wind gusts of 15 to 20 mph are expected during
this time. Humidity should remain higher than yesterday, falling
into the 20 to 30 percent range this afternoon. Winds subside after
sunset. Similar conditions are expected on Wednesday before an
approaching system brings increasing wind Thursday.

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

.REST OF TODAY...

Sky/weather.........Mostly sunny (40-50 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Max temperature.....Around 59.
Min humidity........21 percent.
Wind (20 ft)........Light winds until 1200. Winds southwest around
                    12 mph with gusts to around 18 mph after 1700.
Mixing height.......2000 ft AGL until 1300. 6000 ft AGL after 1400.
Transport winds.....South 9 to 18 mph until 1600, then southwest
                    around 20 mph.
Smoke dispersal.....Poor until 1100. Good early in the morning
                    increasing to very good in the afternoon after
                    1400.

TIME (MST)      7 AM   9 AM   11 AM  1 PM   3 PM
Sky (%).........55     50     45     40     35
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0
Chc of pcpn (%).0      0      0      0      0
Temp............30     40     47     55     59
RH..............85     60     41     30     21
20 ft wind......S 2    S 4    SE 7   S 11   S 12
20 ft wind gust.       6      11     17     18
Mix hgt (ft)....1000   1000   2000   5500   6000
Transport wind..S 9    S 14   S 16   S 18   SW 20
SDspl kt-ft/10006      13     30     86     105

.TONIGHT...

Sky/weather.........Partly cloudy (40-50 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Min temperature.....Around 30.
Max humidity........71 percent.
Wind (20 ft)........Southwest winds 9 to 12 mph with gusts to
                    around 18 mph until 2000, then light.
Mixing height.......1000 ft AGL until 2300, then 500 ft AGL.
Transport winds.....Southwest 13 to 20 mph until 2100, then 9 to 10
                    mph until 2400, then south around 9 mph.
Smoke dispersal.....Poor.

TIME (MST)      5 PM   7 PM   9 PM   11 PM  1 AM   3 AM
Sky (%).........45     45     45     45     40     40
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Chc of pcpn (%).0      0      0      0      0      0
Temp............58     49     43     38     34     31
RH..............30     46     53     60     67     69
20 ft wind......W 12   S 6    S 4    S 4    S 4    SE 4
20 ft wind gust.18     10     6      6      6      6
Mix hgt (ft)....2500   1000   1000   500    500    500
Transport wind..SW 20  W 13   W 9    S 9    S 9    S 9
SDspl kt-ft/100040     9      6      6      6      6

.WEDNESDAY...

Sky/weather.........Mostly sunny (45-55 percent) then becoming
                    mostly cloudy (70-80 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Max temperature.....Around 60.
Min humidity........30 percent.
Wind (20 ft)........Light winds until 1200, then south 7 to 10 mph
                    with gusts to around 16 mph.
Mixing height.......2000 ft AGL until 1300, then 4000 ft AGL until
                    1500, then 5000 ft AGL until 1700, then 2500 ft
                    AGL.
Transport winds.....South 9 to 17 mph.
Smoke dispersal.....Poor until 1300, then fair early in the morning
                    increasing to good in the afternoon until 1700,
                    then poor.

TIME (MST)      5 AM   7 AM   9 AM   11 AM  1 PM   3 PM
Sky (%).........40     45     45     40     55     70
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Chc of pcpn (%).0      0      0      0      0      0
Temp............30     31     38     49     56     59
RH..............69     71     62     45     35     31
20 ft wind......SE 4   S 4    S 5    S 7    S 9    S 10
20 ft wind gust.6      6      7      11     14     16
Mix hgt (ft)....1000   1000   1500   2000   4000   3500
Transport wind..S 9    S 9    S 12   S 17   S 17   S 17
SDspl kt-ft/10006      6      13     33     60     54

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...
Mostly cloudy. Lows in the lower 30s. Highs in the lower 60s.
South winds around 10 mph.
.FRIDAY...
Colder. Mostly cloudy with snow likely and chance of rain. Lows
in the upper 20s. Highs in the lower 40s. North winds around
15 mph.
.SATURDAY...
Mostly cloudy. Lows in the lower 20s. Highs in the lower 40s.
Light winds.

$$
Forecaster...Lowe
Requested by...Shawn Gettings
Type of request...PRESCRIBED
.TAG 2505577.1/RIW
.DELDT 03/11/25
.FormatterVersion 2.0.0
.EMAIL sgettings@blm.gov