Suppression Forecast
Issued by NWS Riverton, WY

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FNUS75 KRIW 130253
FWSRIW

Spot Forecast for Tronox Fire...Sweetwater Fire
National Weather Service Riverton WY
853 PM MDT Sat Aug 12 2017

Forecast is based on request time of 2100 MDT on August 12.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Expect mainly dry conditions overnight and Sunday morning as any left
over showers and thunderstorms have moved east and southeast of the area.
There will again be the potential for isolated showers and storms by
Sunday afternoon and into early evening hours. Winds should remain generally
light tonight and into Sunday morning and pick up to 10 to 15 mph by
afternoon with some gusts to around 25 mph.

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

FORECASTER...Troutman

.REST OF TONIGHT...

Sky/weather.........Partly cloudy (35-45 percent). Isolated
                    thunderstorms late in the evening. Isolated
                    rain showers in the late evening and early
                    morning. Areas of smoke through the night.
Min temperature.....51-54.
Max humidity........80-83 percent.
20-foot winds.......Southeast winds around 8 mph late in the
                    evening becoming downslope/downvalley 4-7 mph,
                    then becoming west around 8 mph late in the
                    night. Gusts up to 15 mph. Gusty and erratic
                    winds expected near thunderstorms late in the
                    evening.
Ridge top winds.....Southeast 10 to 15 mph shifting to the west
                    late in the night.
LAL.................1-8 strikes until 2400, then No Tstms.
Chc of wetting rain.Less than 5 percent.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.
Mixing height.......4900 ft AGL until 2400, then 800 ft AGL.
Transport winds.....Southeast 14 to 17 mph shifting to the west
                    around 13 mph late in the night.
Smoke dispersal.....Excellent decreasing to poor after midnight.

.SUNDAY...

Sky/weather.........Partly cloudy (45-55 percent). Areas of smoke
                    in the morning. Isolated showers and
                    thunderstorms in the afternoon.
Max temperature.....80-83.
Min humidity........21-24 percent.
20-foot winds.......Upslope/upvalley 5-9 mph becoming west 10 to 16
                    mph with gusts to around 25 mph in the
                    afternoon. Gusty and erratic winds expected
                    near thunderstorms in the afternoon.
Ridge top winds.....West 10 to 15 mph.
LAL.................No Tstms until 1200, then 1-8 strikes.
Chc of wetting rain.Less than 5 percent.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......1300 ft AGL until 1200, then 11800 ft AGL.
Transport winds.....West 14 to 20 mph.
Smoke dispersal.....Fair increasing to excellent in the afternoon.

.FORECAST DAYS 3 THROUGH 5...
.SUNDAY NIGHT...
Partly cloudy. Lows in the lower 50s. Winds generally less than
10 mph.
.MONDAY...
Partly cloudy with isolated showers and thunderstorms. Lows in
the lower 50s. Highs in the upper 70s. West winds around 10 mph.
.TUESDAY...
Partly cloudy with isolated showers and thunderstorms. Lows
around 50. Highs in the mid 70s. Winds generally less than
10 mph.
.WEDNESDAY...
Mostly clear. Lows in the mid 40s. Highs in the mid 70s. Winds
generally less than 10 mph.
.THURSDAY...
Mostly clear. Lows in the upper 40s. Highs around 80. Winds
generally less than 10 mph.

$$
Forecaster...Troutman
Requested by...Mike Bornazian
Type of request...WILDFIRE
.TAG 1714280.0/RIW
.EMAIL fire@sweet.wy.us



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