Suppression Forecast
Issued by NWS Cheyenne, WY

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FNUS75 KCYS 220328
FWSCYS

Spot Forecast for Keystone...USFS
National Weather Service Cheyenne WY
928 PM MDT Fri Jul 21 2017

Forecast is based on request time of 2200 MDT on July 21.

Please contact our office at (307) 772-2227, if you have questions
or concerns with this forecast.

.DISCUSSION...

Showers and thunderstorms will continue moving south of the Keystone
area tonight with mainly partly to mostly cloudy skies for the
remainder of the night. Drier air will begin moving into the area
for this weekend, but can not rule out a late morning or early
afternoon thunderstorm near the Keystone and Albany areas. Cooler
temperatures will continue through the weekend with daytime minimum
relative humidities lowering between 25 to 35 percent each day.

.TONIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy. Some
                    patchy fog possible in the valleys.
CWR.................0 percent for the rest of the night.
LAL.................1.
Min temperature.....45 to 48 degrees.
Max humidity........85 to 100 percent.
WIND (20 FT)........Downslope/downvalley winds around 5 mph.
Mixing height.......1800 ft AGL.
Transport winds.....West around 6 mph.
Smoke dispersal.....Poor (1600 knot-ft).
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

.SATURDAY...

Sky/weather.........Partly cloudy. Slight chance of showers
                    and thunderstorms.
CWR.................5 percent.
LAL.................2.
Max temperature.....71 to 76 degrees.
Min humidity........around 25 percent.
WIND (20 FT)........Northwest winds 10 to 15 mph and gusty at
                    times. Gusty and erratic winds expected
                    near thunderstorms.
Mixing height.......1800 ft AGL increasing to 8600 ft AGL in the
                    afternoon.
Transport winds.....Northwest around 10 mph.
Smoke dispersal.....good (50700 knot-ft).
Haines Index........4 or low potential for large plume dominated
                    fire growth.

.SATURDAY NIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy.
CWR.................0 percent.
LAL.................1.
Min temperature.....Around 50 degrees.
Max humidity........80 to 95 percent.
WIND (20 FT)........Downslope/downvalley around 5 mph.
Mixing height.......1800 ft AGL.
Transport winds.....West around 6 mph.
Smoke dispersal.....Poor (1600 knot-ft).
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

$$

Requested by...Daron Reynolds
Type of request...WILDFIRE
.TAG 1712969.4/CYS
.EMAIL keystonefire2017@gmail.com


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