FNUS75 KCYS 292309
FWSCYS

SPOT FORECAST FOR PASTURE 20 RX...USDS F.S. NEBRASKA NF
NATIONAL WEATHER SERVICE CHEYENNE WY
509 PM MDT TUE SEP 29 2009

FORECAST IS BASED ON IGNITION TIME OF 1740 MDT ON SEPTEMBER 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
BREEZY AND MILD CONDITIONS WILL CONTINUE TONIGHT AND MOST OF
WEDNESDAY UNDER SOUTHWEST FLOW ALOFT. A STRONG UPPER LEVEL WEATHER
SYSTEM WILL AFFECT THE AREA MAINLY WEDNESDAY NIGHT AND THURSDAY
WITH INCREASING SHOWERS AND WIND ALONG WITH COOLER TEMPERATURES.
A COLD FRONT AT THE LEADING EDGE OF THIS SYSTEM WILL MOVE THROUGH
THE BURN AREA AROUND 5 OR 6 PM WEDNESDAY AFTERNOON WITH SHIFTING
WINDS AND SOME THUNDERSTORMS ACCOMPANYING THE FRONTAL PASSAGE.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT) THROUGH THIS
                    EVENING...THEN MOSTLY CLEAR (25-35 PERCENT).
MIN TEMPERATURE.....AROUND 48.
MAX HUMIDITY........75 PERCENT.
WIND (20 FT)........SOUTH 12 TO 18 MPH WITH GUSTS TO 25 MPH...GUSTS
                    AND SUSTAINED SPEEDS ABOUT 5 MPH LESS FOR NORTH
                    OR BOTTOM OF PROJECT.
CWR.................0 PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......600-1400 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 25 MPH.
SMOKE DISPERSAL.....GOOD BECOMING POOR (61200 KNOT-FT LOWERING TO
                    7200 KNOT-FT AFTER MIDNIGHT).

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY EARLY (25-35 PERCENT) THEN PARTLY
                    CLOUDY (50-60 PERCENT). A 20 PERCENT CHANCE OF
                    THUNDERSTORMS LATE IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........SOUTH WINDS 13 TO 18 MPH SHIFTING TO THE
                    NORTHWEST 10 TO 15 MPH LATE IN THE AFTERNOON.
                    GUSTS UP TO 25 MPH.
CWR.................10 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......600-1100 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
SMOKE DISPERSAL.....POOR BECOMING FAIR (7000 KNOT-FT INCREASING TO
                    48600 KNOT-FT BY LATE MORNING).

$$
FORECASTER...HATTEN
REQUESTED BY...WESTON BURCH
TYPE OF REQUEST...PRESCRIBED
.TAG 20090929.PASTU.03/CYS