Suppression Forecast
Issued by NWS Riverton, WY

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FNUS75 KRIW 211346
FWSRIW

Spot Forecast for Tower Hill Slash Pile...BLM CAD
National Weather Service Riverton WY
746 AM MDT Sat Apr 21 2018

Forecast is based on ignition time of 0800 MDT on April 21.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...The upper level low pressure system that brought
colder temperatures, low clouds and light precipitation to the area,
now over southeast Colorado, will move out of the area as dry high
pressure surface and aloft builds up over the area today and Sunday.
Winds, surface and aloft will be light.  Temperatures will begin
to warm with decreasing relative humidity.

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

FORECASTER...C.Baker

.REST OF TODAY...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    Mostly sunny (15-20 percent) by 11:00 AM MDT.
Max temperature.....49-52.
Min humidity........40-43 percent.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....West around 10 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.......3500-4500 ft AGL.
Transport winds.....West 12 to 14 mph.
Smoke dispersal.....Good.

.TONIGHT...

Sky/weather.........Mostly clear (10-15 percent).
Min temperature.....31-34.
Max humidity........71-74 percent.
20-foot winds.......Downslope/downvalley 4-7 mph becoming northwest
                    8 to 9 mph in the late evening and overnight.
                    Gusts up to 15 mph.
Ridge top winds.....Northwest 10 to 15 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.......2700 ft AGL until 2400, then 500 FT AGL.
Transport winds.....Northwest 13 to 17 mph.
Smoke dispersal.....Good early, becoming poor by 21:00 PM MDT.

.SUNDAY...

Sky/weather.........Mostly sunny (10-15 percent).
Max temperature.....Around 60.
Min humidity........29-32 percent.
20-foot winds.......Upslope/upvalley 5-9 mph.
Ridge top winds.....North around 10 mph shifting to the east late
                    in the morning, then shifting to the south in
                    the afternoon.
LAL.................No Tstms.
Chc of wetting rain.Zero percent.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Mixing height.......3100 ft AGL until 1200, then 5600 ft AGL.
Transport winds.....North around 14 mph shifting to the east around
                    12 mph late in the morning, then shifting to
                    the south 12 to 13 mph in the afternoon.
Smoke dispersal.....Fair in the morning then good by 12:00 PM MDT.

.FORECAST DAYS 3 THROUGH 5...
.SUNDAY NIGHT...
Mostly clear. Lows in the mid 30s. Winds generally less than
10 mph.
.MONDAY...
Cooler. Mostly cloudy with showers likely and chance of snow
showers. Lows in the mid 30s. Highs in the mid 40s. North winds
around 12 mph.
.TUESDAY...
Partly cloudy with slight chance of snow showers. Lows in the
lower 20s. Highs around 40. Winds generally less than 10 mph.
.WEDNESDAY...
Warmer. Partly cloudy. Slight chance of snow showers. Lows in the
upper 20s. Highs in the mid 50s. West winds around 10 mph.

$$
Forecaster...C.Baker
Requested by...Cordell Anthony
Type of request...PRESCRIBED
.TAG 1807261.0/RIW
.EMAIL wyofire12@gmail.com


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