Suppression Forecast
Issued by NWS Riverton, WY

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FNUS75 KRIW 181407
FWSRIW

Spot Forecast for Middle Fork F10 RX Burn...US Forest Service
National Weather Service Riverton WY
707 AM MST Thu Jan 18 2018

Forecast is based on ignition time of 0900 MST on January 18.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Wind will be the main concern today as they should increase out of
the southwest as the day progresses. Most exposed areas, especially
southwest facing areas will see the strongest wind where winds over
30 mph. Much stronger winds will arrive by this evening with gusts
over 40 mph in open areas and gusts over 50 mph on the ridges. The
leading edge of a storm system will begin to arrive Friday with some
light snow chances increasing during the day. The main storm will not
arrive until Saturday though when widespread snow is expected to
accumulate.

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

FORECASTER...Skrbac

.TODAY...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    partly cloudy (50-60 percent).
Max temperature.....43-46.
Min humidity........32-35 percent.
20-foot winds.......Upslope/upvalley 5-9 mph becoming southwest 10
                    to 17 mph with gusts to around 30 mph in the
                    late morning and afternoon.
Ridge top winds.....West 10 to 15 mph shifting to the southwest
                    around 30-35 mph in the afternoon.
LAL.................No Tstms.
Chc of wetting rain.Zero percent.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Mixing height.......Increasing to 1500 ft AGL.
Transport winds.....West 13 to 15 mph increasing to southwest 23 to
                    25 mp in the morning then fair.

.TONIGHT...

Sky/weather.........Partly cloudy (35-45 percent). Patchy blowing
                    snow through the night. Slight chance of snow
                    after midnight. Chance of snow early in the
                    morning.
Min temperature.....29-32.
Max humidity........69-72 percent.
20-foot winds.......Southwest winds 14 to 24 mph with gusts to
                    around 40 mph.
Ridge top winds.....Southwest and increasing to 45-55 mph.
LAL.................No Tstms.
Chc of wetting rain.Zero percent.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Mixing height.......600 ft AGL.
Transport winds.....Southwest 27 to 33 mph.
Smoke dispersal.....Fair.

.FRIDAY...

Sky/weather.........Partly cloudy (45-55 percent) then becoming
                    mostly cloudy (70-80 percent). Chance of snow
                    until late afternoon, then snow likely late in
                    the afternoon.
Max temperature.....36-39.
Min humidity........50-53 percent.
20-foot winds.......Southwest winds 20 to 30 mph. Gusts up to 40
                    mph.
Ridge top winds.....Southwest 40 to 45 mph.
LAL.................No Tstms.
Chc of wetting rain.18 percent.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Mixing height.......1800-2300 ft AGL.
Transport winds.....Southwest 25 to 30 mph.
Smoke dispersal.....Fair early then good.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...
Snow likely in the evening, then snow after midnight. Lows in the
lower 20s. Winds generally less than 10 mph.
.SATURDAY...
Colder, snow. Lows in the lower 20s. Highs in the upper 20s.
Winds generally less than 10 mph.
.SUNDAY...
Partly cloudy with chance of snow. Lows around 12. Highs in the
mid 20s. Winds generally less than 10 mph.
.MONDAY...
Partly cloudy with slight chance of snow. Lows around 13. Highs
in the upper 20s. Winds generally less than 10 mph.

$$
Forecaster...Skrbac
Requested by...Jacob Binns
Type of request...PRESCRIBED
.TAG 1800514.0/RIW
.EMAIL jbinns@fs.fed.us



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