Suppression Forecast
Issued by NWS Cheyenne, WY

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985
FNUS75 KCYS 281531
FWSCYS

Spot Forecast for Keystone...USFS
National Weather Service Cheyenne WY
931 AM MDT Fri Jul 28 2017

Forecast is based on request time of 1000 MDT on July 28.

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

.DISCUSSION...

Widely scattered showers and thunderstorms are expected this
afternoon. However, some drier air will move into the region
today which will limit the overall coverage of thunderstorms
compared to earlier this week. Moisture will then return to
the Keystone area this weekend as a potent upper level
disturbance moves northward out of Colorado. Numerous showers and
thunderstorms with a good chance of wetting rains are expected
Saturday and Saturday night. Gusty and erratic winds are expected
near thunderstorms today and Saturday.

.TODAY...

Sky/weather.........Mostly sunny then becoming partly cloudy.
                    Widely scattered showers and thunderstorms
                    in the afternoon.
CWR.................10 percent.
LAL.................2.
Max temperature.....Around 72.
Min humidity........30 to 35 percent.
WIND (20 FT)........West winds 10 to 15 mph. Gusty and erratic
                    winds expected near thunderstorms in
                    the afternoon.
Mixing height.......4800 ft AGL increasing to 8900 ft AGL in the
                    afternoon.
Transport winds.....West around 11 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.

.TONIGHT...

Sky/weather.........Mostly cloudy. Slight chance of showers and
                    thunderstorms in the evening.
CWR.................5 percent.
LAL.................2.
Min temperature.....Around 45 to 50.
Max humidity........80 to 90 percent.
WIND (20 FT)........Northwest winds 10 to 15 mph shifting to the east
                    around 5 mph after midnight. Gusty and erratic
                    winds expected near thunderstorms in the
                    evening.
Mixing height.......5900 ft AGL decreasing to 1500 ft AGL after
                    midnight.
Transport winds.....East around 8 mph.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.

.SATURDAY...

Sky/weather.........Partly cloudy then becoming mostly cloudy.
                    Slight chance of showers and thunderstorms in
                    the morning, then showers and thunderstorms
                    likely in the afternoon.
CWR.................25 to 35 percent.
LAL.................4.
Max temperature.....Around 70 degrees.
Min humidity........35 to 45 percent.
WIND (20 FT)........Southeast winds 5 to 10 mph shifting to the
                    northeast 10 to 15 mph in the afternoon. Gusty
                    and erratic winds expected near thunderstorms.
Mixing height.......4800-6600 ft AGL.
Transport winds.....East around 5 mph.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.

$$

Requested by...Daron Reynolds
Type of request...WILDFIRE
.TAG 1712969.12/CYS
.EMAIL keystonefire2017@gmail.com



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