Suppression Forecast
Issued by NWS Riverton, WY

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FNUS75 KRIW 161448
FWSRIW

Spot Forecast for Wind river piles t-39 C,D...US Forest Service
National Weather Service Riverton WY
848 AM MDT Tue May 16 2017

Forecast is based on ignition time of 0900 MDT on May 16.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Unsettled and turning colder with showers and a few thunderstorms in the area today
with rain showers turning to snow showers later tonight into Tuesday. West winds will
likely increase and be a little gusty at times by this afternoon. A strong cold front
will move in overnight dropping temperatures and likely producing a period of snow
by Tuesday morning.

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

FORECASTER...Skrbac

.REST OF TODAY...

Sky/weather.........Cloudy (80-90 percent). Isolated showers and
                    thunderstorms late in the morning, then
                    scattered rain showers and isolated
                    thunderstorms in the afternoon.
Max temperature.....46-49.
Min humidity........42-45 percent.
20-foot winds.......Upslope/upvalley 5-9 mph becoming west 10 to 12
                    mph in the afternoon. Gusts up to 20 mph. Gusty
                    and erratic winds expected near thunderstorms
                    late in the morning. Gusty and erratic winds
                    expected near thunderstorms in the afternoon.
Ridge top winds.....West 15 to 20 mph.
LAL.................2.
Chc of wetting rain.10 percent.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Mixing height.......4500 ft AGL until 1200, then increasing to 6500 ft AGL.
Transport winds.....Southwest 20 to 25 mph.
Smoke dispersal.....Good increasing to excellent in the afternoon.

.TONIGHT...

Sky/weather.........Cloudy (90-100 percent). Scattered rain showers
                    and isolated thunderstorms through the night.
                    Scattered snow showers after midnight.
Min temperature.....Around 30.
Max humidity........84-87 percent.
20-foot winds.......West winds 8 to 11 mph with gusts around 20 mph early in the
                    evening becoming downslope/downvalley 4-7 mph.
                    Gusty and erratic winds expected near
                    thunderstorms.
Ridge top winds.....Southwest 12 to 16 mph.
LAL.................2.
Chc of wetting rain.30 percent.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Mixing height.......decreasing to around 2000 ft AGL.
Transport winds.....Southwest around 25 mph decreasing to 12 to 18
                    mph in the late evening and overnight.
Smoke dispersal.....Good early then decreasing to poor by midnight.

.WEDNESDAY...

Sky/weather.........Cloudy (90-100 percent). Snow showers likely in the morning
                    decreasing to scattered snow showers in the afternoon.
Max temperature.....31-34.
Min humidity........62-65 percent.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....West around 15 mph.
LAL.................No Tstms.
Chc of wetting rain.40 percent.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Mixing height.......3200 ft AGL until 1200, then 6000 ft AGL.
Transport winds.....Southwest 16 to 20 mph.
Smoke dispersal.....Good increasing to very good in the afternoon.

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...
Cloudy with chance of snow showers. Lows in the lower 20s. Winds
generally less than 10 mph.
.THURSDAY...
Mostly cloudy. Chance of showers and snow showers. Lows in the
lower 20s. Highs in the upper 30s. Winds generally less than
10 mph.
.FRIDAY...
Mostly cloudy. Slight chance of snow showers. Lows in the lower
20s. Highs in the lower 40s. Winds generally less than 10 mph.
.SATURDAY...
Mostly cloudy with slight chance of showers, thunderstorms and
snow showers. Lows in the mid 20s. Highs in the upper 40s. Winds
generally less than 10 mph.

$$
Forecaster...Skrbac
Requested by...John Ellington
Type of request...PRESCRIBED
.TAG 1709576.0/RIW
.EMAIL johnellington@fs.fed.us


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