FNUS75 KCYS 081521
FWSCYS

SPOT FORECAST FOR MARKING PEN RX...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
921 AM MDT SUN MAY 8 2011

FORECAST IS BASED ON IGNITION TIME OF 0930 MDT ON MAY 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
SW FLOW WILL BE ALOFT OVER THE AREA TODAY AS AN UPPER TROUGH MOVES
INLAND FROM THE WEST COAST AND DEEPENS.  BREEZY CONDITIONS WILL
OCCUR OVER THE AREA TODAY AND ISOLATED SHOWERS AND A FEW THUNDERSTORMS
WILL OCCUR DURING THE AFTERNOON.

.TODAY...

SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (65-75 PERCENT). SLIGHT CHANCE OF
                    RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....AROUND 64.
MIN HUMIDITY........22 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 10 TO 16 MPH. GUSTS UP TO 35
                    MPH INCREASING TO 40 MPH IN THE AFTERNOON.
CWR.................10 PERCENT INCREASING TO 30 PERCENT IN THE
                    AFTERNOON.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......6100 FT AGL INCREASING TO 8800 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 26 MPH.
SMOKE DISPERSAL.....EXCELLENT TO EXCELLENT (96000-228700 KNOT-FT).

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). ISOLATED
                    THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....AROUND 44.
MAX HUMIDITY........67-73 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 16 TO 19 MPH WITH GUSTS TO
                    AROUND 35 MPH SHIFTING TO THE WEST 8 TO 13 MPH
                    AND GUSTY LATE IN THE EVENING...THEN BECOMING
                    DOWNSLOPE/DOWNVALLEY 4-7 MPH AFTER MIDNIGHT.
CWR.................30 PERCENT.
LAL.................1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5100 FT AGL DECREASING TO 900 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
SMOKE DISPERSAL.....POOR TO EXCELLENT (6600-120100 KNOT-FT).

.MONDAY...

SKY/WEATHER.........CLOUDY (85-95 PERCENT). CHANCE OF RAIN SHOWERS.
MAX TEMPERATURE.....AROUND 54.
MIN HUMIDITY........36 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST 10
                    TO 14 MPH WITH HIGHER GUSTS IN THE AFTERNOON.
CWR.................50 PERCENT.
LAL.................2.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3600 FT AGL INCREASING TO 6800 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTH AROUND 15 MPH.
SMOKE DISPERSAL.....GOOD TO EXCELLENT (35500-113600 KNOT-FT).

$$
FORECASTER...DAUGHERTY
REQUESTED BY...DERRICK YOUNGERMAN
TYPE OF REQUEST...PRESCRIBED
.TAG 20110508.MARKI.01/CYS