FNUS75 KCYS 270415
FWSCYS

SPOT FORECAST FOR SEMINOE...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
1015 PM MDT THU JUL 26 2012

FORECAST IS BASED ON REQUEST TIME OF 2157 MDT ON JULY 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE IN THE UPPER ATMOSPHERE WILL BE OVER THE CENTRAL
ROCKIES AND THE FIRE SITE THROUGH THE WEEKEND. A SURFACE TROUGH
WILL DEVELOP OVER EASTERN WYOMING ON FRIDAY AND CONTINUE THROUGH
SATURDAY. THAT FEATURE WILL HELP TO PRODUCE GUSTY DAYTIME WINDS.
MID AND UPPER LEVEL MOISTURE WILL MOVE OVER THE REGION FRIDAY AND
SATURDAY AND WILL PRODUCE SOME HIGH BASED SHOWERS AND
THUNDERSTORMS OVER AND NEAR THE FIRE SITE.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....AROUND 55.
MAX HUMIDITY........58 PERCENT.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 4-7 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......5400 FT AGL DECREASING TO 200 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....SOUTHEAST AROUND 8 MPH.
SMOKE DISPERSAL.....BECOMING POOR AFTER MIDNIGHT (1600 KNOT-FT).

.FRIDAY...

SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). A 20 PERCENT
                    COVERAGE OF SHOWERS AND THUNDERSTORMS OVER THE
                    AREA STARTING AT 2 PM. STORMS WILL PRODUCE
                    BRIEF WIND GUSTS TO 40 MPH.
MAX TEMPERATURE.....AROUND 86.
MIN HUMIDITY........15 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST 12
                    TO 16 MPH WITH GUSTS TO 26 MPH IN THE AFTERNOON.
CWR.................0 PERCENT INCREASING TO 20 PERCENT IN THE
                    AFTERNOON.
LAL.................2.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 12900 FT AGL IN THE AFTERNOON.                  AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 18 MPH.
SMOKE DISPERSAL.....BECOMING EXCELLENT BY THE AFTERNOON (45100-
                    190200 KNOT-FT).

$$
FORECASTER...WEILAND
REQUESTED BY...CHRIS HAVENER
TYPE OF REQUEST...WILDFIRE
.TAG 20120726.SEMIN.01/CYS