Suppression Forecast
Issued by NWS Riverton, WY

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000
FNUS75 KRIW 201449
FWSRIW

Spot Forecast for Tin Cup Piles...BLM
National Weather Service Riverton WY
749 AM MST Tue Feb 20 2018

Forecast is based on ignition time of 0800 MST on February 20.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Mostly sunny to partly cloudy with increasing southwest wind
through the day. Quite cold with highs around 10 above.

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

FORECASTER...Skrbac

.REST OF TODAY...

Sky/weather.........Mostly sunny (25-35 percent).
Max temperature.....9-12.
Min humidity........59-62 percent.
20-foot winds.......Southwest 9-12 mph gusts to 20 mph until 10 am then
                    increasing to 20-25 mph with gusts 30-35 mph.
Ridge top winds.....Southwest increasing to 25-30 mph.
LAL.................No Tstms.
Chc of wetting rain.Zero percent.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Mixing height.......1000-2000 ft AGL until 1200, then 4500-5000 ft
                    AGL.
Transport winds.....West 12 to 18 mph...increasing to 20-25 mph in the
                    afternoon.
Smoke dispersal.....Poor increasing to very good in the afternoon.

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent).
Min temperature.....12 below-15 below zero.
Max humidity........88-91 percent.
20-foot winds.......Southwest winds 8 to 11 mph and gusty.
Ridge top winds.....Southwest around 20 mph.
LAL.................No Tstms.
Chc of wetting rain.Zero percent.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Mixing height.......2100-3100 ft AGL until 2400, then 600-1100 ft
                    AGL.
Transport winds.....Southwest 15 to 21 mph.
Smoke dispersal.....Fair early then poor.

.WEDNESDAY...

Sky/weather.........Mostly sunny (15-25 percent) then becoming
                    partly cloudy (50-60 percent).
Max temperature.....12-15.
Min humidity........54-57 percent.
20-foot winds.......Southwest winds 15 to 20 mph with gusts to
                    25 to 30 mph.
Ridge top winds.....Southwest 20-25 mph.
LAL.................No Tstms.
Chc of wetting rain.Zero percent.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Mixing height.......1700-2700 ft AGL increasing to 4500 ft AGL in the
                    afternoon.
Transport winds.....Southwest 15 to 21 mph.
Smoke dispersal.....Poor through mid morning then gradually increasing
                    good.

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...
Partly cloudy. Lows around 6 below. Winds generally less than
10 mph.
.THURSDAY...
Partly cloudy. Lows around 6 below. Highs around 15. Winds
generally less than 10 mph.
.FRIDAY...
Mostly clear. Lows around 3 below. Highs in the lower 20s. Winds
generally less than 10 mph.
.SATURDAY...
Partly cloudy. Lows around 1. Highs in the mid 20s. Southwest
winds around 14 mph.

$$
Forecaster...Skrbac
Requested by...Heath Morgan
Type of request...PRESCRIBED
.TAG 1802201.0/RIW
.EMAIL hmorgan@blm.gov



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