201
FNUS75 KRIW 191106
FWSRIW

Spot Forecast for Pack Trail Fire...USFS
National Weather Service Riverton WY
506 AM MDT Thu Sep 19 2024

Forecast is based on forecast start time of 0600 MDT on September 19.
If conditions become unrepresentative, contact the National Weather
Service

.DISCUSSION...

Warmer and drier conditions are expected today. Wind will be light
and terrain driven through the morning before prevailing out of the
west this afternoon. Clouds will decrease through the morning,
becoming mostly sunny after 1200. Similar conditions are expected
Friday though with a slightly breezier wind for the afternoon.
Precipitation chances will remain low through the upcoming weekend.

...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...

.TODAY...

Sky/weather.........Partly sunny (50-60 percent) then becoming
                    sunny (15-25 percent). Patchy fog early in the
                    morning, then areas of fog early in the
                    morning. Patchy fog late in the morning.
CWR.................0 percent.
Chance of pcpn......0 percent.
Max temperature.....Around 58.
Min humidity........37 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......Southwest around 10 mph until 0800, then light
                    until 1100, then west around 10 mph.
Mixing height.......2500 ft AGL until 1100. 6000 ft AGL after 1400.
Transport winds.....West 7 to 16 mph.
Smoke dispersal.....Poor until 1000. Good after 1400.

TIME (MDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........65     60     35     15     25     15
Weather cov.....PATCHY AREAS
Weather type....FOG    FOG    NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Chc of pcpn (%).0      0      0      0      0      0
Temp............37     34     44     50     55     56
RH..............96     96     86     66     47     45
20 ft wind......SW 3   W 2    W 2    W 4    W 5    W 6
20 ft wind gust.4                    6      6      7
Ridgetop wind...SW 10  W 5    W 5    W 10   W 10   W 10
Mix hgt (ft)....1000   1000   2500   4500   5500   6000
Transport wind..W 8    W 7    W 8    W 12   W 16   W 16
SDspl kt-ft/10007      7      17     44     78     82

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
CWR.................0 percent.
Chance of pcpn......0 percent.
Min temperature.....Around 32.
Max humidity........88 percent.
Wind (20 ft)........Light winds.
Ridgetop wind.......West around 10 mph until 0200, then light.
Mixing height.......5000 ft AGL until 1900, then 1000 ft AGL.
Transport winds.....West 8 to 15 mph until 0100, then south 7 to 8
                    mph.
Smoke dispersal.....Good until 1900. Poor after 2100.

TIME (MDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........10     5      5      10     5      10
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............57     47     42     37     36     35
RH..............38     58     67     72     79     82
20 ft wind......W 6    W 5    W 4    NW 3   W 2    SW 2
20 ft wind gust.7      6      6      4
Ridgetop wind...W 10   W 10   W 10   NW 10  W 5    SW 5
Mix hgt (ft)....5000   1000   1000   1000   1000   1000
Transport wind..W 15   W 10   W 9    SW 8   S 8    SW 7
SDspl kt-ft/100063     9      7      7      6      6

.FRIDAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Chance of pcpn......10 percent.
Max temperature.....Around 61.
Min humidity........32 percent.
Wind (20 ft)........Light winds until 1200. Winds west 7 to 8 mph
                    after 1300.
Ridgetop wind.......Light winds until 1000, then west 10 to 15 mph.
Mixing height.......1000 ft AGL until 1000. 7000 ft AGL after 1200.
Transport winds.....Southwest 7 to 14 mph until 1100, then west 18
                    to 24 mph.
Smoke dispersal.....Poor until 1000. Very good after 1200.

TIME (MDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........10     5      5      5      15     20
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      10     10     10
Temp............32     37     46     57     60     60
RH..............88     75     58     38     33     33
20 ft wind......S 1    S 1    SW 4   W 6    W 8    W 8
20 ft wind gust.              6      10     12     12
Ridgetop wind...S 5    S 5    SW 10  W 15   W 15   W 15
Mix hgt (ft)....1000   1000   3000   6000   6500   6500
Transport wind..SW 7   SW 8   W 14   W 22   W 23   W 23
SDspl kt-ft/10006      6      33     111    131    126

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY...
Mostly clear. Lows in the lower 30s. Highs in the lower 60s.
Light winds.
.SUNDAY...
Mostly clear. Lows in the upper 20s. Highs in the lower 60s.
Light winds.
.MONDAY...
Mostly cloudy. Chance of showers. Lows in the lower 30s. Highs in
the mid 50s. Light winds.

$$
Forecaster...Lowe
Requested by...Andy Jones
Type of request...WILDFIRE
.TAG 2422603.9/RIW
.DELDT 09/19/24
.FormatterVersion 2.0.0
.EMAIL andrew.jones2@usda.gov