FNUS75 KCYS 181505
FWSCYS

SPOT FORECAST FOR SOUTH MILL CK  RX...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
905 AM MDT TUE OCT 18 2011

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON OCTOBER 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...BRISK NORTH FLOW ALOFT WILL PREVAIL TODAY WITH SURFACE
HIGH PRESSURE BUILDING SOUTHWARD INTO CENTRAL WYOMING. AN UPPER
LEVEL RIDGE AXIS WILL BUILD ACROSS WESTERN WYOMING TONIGHT WITH
SURFACE LEE TROUGHING BEGINNING TO DEVELOP ALONG WITH LIGHT WINDS.
THE RIDGE ALOFT WILL MOVE TO EASTERN WYOMING BY LATE WEDNESDAY AS
SURFACE HIGH PRESSURE PREVAILS ACROSS THE NORTHERN PLAINS STATES
PRODUCING LOW LEVEL SOUTHEASTERLY FLOW ACROSS EASTERN WYOMING
EAST OF THE LARAMIE RANGE. DRY WEATHER WITH FEW CLOUDS WILL PREVAIL
THROUGH WEDNESDAY.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....AROUND 43.
MIN HUMIDITY........33 PERCENT.
WIND (20 FT)........NORTHWEST 10 TO 20 MPH WITH GUSTS TO 30 MPH
                    THROUGH EARLY AFTERNOON...THEN WINDS SLOWLY
                    DECREASING TO 5 TO 15 MPH BY LATE AFTERNOON.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3800-5400 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH.
SMOKE DISPERSAL.....GOOD TO EXCELLENT (53700-108900 KNOT-FT).

.TONIGHT...

SKY/WEATHER.........CLEAR (0-5 PERCENT).
MIN TEMPERATURE.....AROUND 21.
MAX HUMIDITY........80 PERCENT.
WIND (20 FT)........WEST WIND 5 TO 10 MPH.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3000 FT AGL DECREASING TO 400 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (4400-48400 KNOT-FT).

.WEDNESDAY...

SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 52.
MIN HUMIDITY........22 PERCENT.
WIND (20 FT)........SOUTHEAST WIND 5 TO 10 MPH IN THE MORNING...
                    BECOMING SOUTHWEST 10 TO 15 MPH WITH GUSTS
                    TO 20 MPH IN THE AFTERNOON.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2000-3900 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 16 MPH.
SMOKE DISPERSAL.....FAIR TO EXCELLENT (24100-69800 KNOT-FT).

$$
FORECASTER...RUBIN
REQUESTED BY...JEROD DELAY
TYPE OF REQUEST...PRESCRIBED
.TAG 20111018.SOUTH.01/CYS