FNUS75 KCYS 121259
FWSCYS

SPOT FORECAST FOR SOUTH MILL CK  RC...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
659 AM MDT WED OCT 12 2011

FORECAST IS BASED ON IGNITION TIME OF 0930 MDT ON OCTOBER 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A MILD...DRY AND WINDY PERIOD IS ON TAP FOR THE BURN SITE THROUGH
SATURDAY. A BROAD AREA HIGH PRESSURE IN THE UPPER ATMOSPHERE WILL
BE OVER THE WESTERN APRT OF THE NATION. NORTHWEST WIND FLOW ALOFT
WILL BE OVER THE BURN SITE THROUGH SATURDAY...WITH SURFACE HIGH
PRESSURE CENTERED OVER WESTERN WYOMING. THE MAIN CONCERN WILL
CONTINUE TO BE THE WEST TO SOUTHWEST WINDS GUSTING AS HIGH AS 50
MPH...ESPECIALLY DURING THE DAYTIME HOURS TODAY AND THURSDAY.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....AROUND 52.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........WINDY. WEST WINDS 20 TO 30 MPH WITH GUSTS UP TO
                    50 MPH.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4700-5800 FT AGL.
TRANSPORT WINDS.....WEST AROUND 34 MPH.
SMOKE DISPERSAL.....EXCELLENT (127600-184900 KNOT-FT).

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....AROUND 31.
MAX HUMIDITY........72 PERCENT.
WIND (20 FT)........WEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 35
                    MPH.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 800 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 27 MPH.
SMOKE DISPERSAL.....BECOMING EXCELLENT (12900-83000 KNOT-FT).

.THURSDAY...

SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (30-40 PERCENT).
MAX TEMPERATURE.....AROUND 56.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........WEST WINDS 20 TO 25 MPH. GUSTS UP TO 35 MPH
                    INCREASING TO 45 MPH IN THE AFTERNOON.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 5800 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 30 MPH.
SMOKE DISPERSAL.....EXCELLENT (74100-168600 KNOT-FT).

$$
FORECASTER...WEILAND
REQUESTED BY...JEROD DELAY
TYPE OF REQUEST...PRESCRIBED
.TAG 20111012.SOUTH.01/CYS