FNUS75 KCYS 091458
FWSCYS

SPOT FORECAST FOR PARK...PLATTE COUNTY FIRE
NATIONAL WEATHER SERVICE CHEYENNE WY
858 AM MDT THU SEP 9 2010

FORECAST IS BASED ON REQUEST TIME OF 0814 MDT ON SEPTEMBER 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A WARM AND MOSTLY DRY WILL DAY OCCUR AT THE BURN
SITE TODAY. RELATIVE HUMIDITIES WILL DROP TO THE UPPER
TEENS...AND WINDS WILL SHIFT TO THE SOUTHWEST BY THE EARLY
AFTERNOON AND WILL BECOME GUSTY AFTER 1400 MDT. AN ISOLATED SHOWER
OR THUNDERSTORM IS POSSIBLE AFTER 1600 MDT AHEAD OF THE COLD FRONT
THAT WILL SWING THROUGH THE BURN SITE AROUND 1800 MDT THIS
EVENING. WINDS WILL EASE A BIT AND TURN TO THE WEST BEHIND THE
FRONT WITH GOOD RELATIVE HUMIDITY RECOVERY OVERNIGHT. FRIDAY WILL
BE COOLER WITH STRONGER NORTHWEST WINDS GUSTING UP TO 35 MPH IN
THE LATE AFTERNOON.

.TODAY...

SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). AN ISOLATED
    SHOWER OR THUNDERSTORM IS POSSIBLE IN THE LATE
                    AFTERNOON.
MAX TEMPERATURE.....86 TO 88.
MIN HUMIDITY........17 TO 19 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST 13
                    TO 16 MPH WITH GUSTS UP TO 27 MPH BY 1400 MDT.
CWR.................10 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE
                    GROWTH.
MIXING HEIGHT.......3600 FT AGL INCREASING TO 7200 FT AGL BY
                    NOON...INCREASING TO 11200 FT AGL BY 1400 MDT.
TRANSPORT WINDS.....SOUTHWEST AROUND 28 MPH.
SMOKE DISPERSAL.....FAIR TO EXCELLENT (21500-115800 KNOT-FT).

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY BECOMING PARTLY CLOUDY (45-55 PERCENT)
                    AFTER MIDNIGHT.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........58 TO 61 PERCENT.
WIND (20 FT)........WEST WINDS 8 TO 11 MPH.
CWR.................10 PERCENT.
LAL.................2.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......11800 FT AGL IN THE EARLY EVENING DECREASING TO
                    6100 FT AGL AND THEN AROUND 500 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (10700-46700 KNOT-FT).

.FRIDAY...

SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT).
MAX TEMPERATURE.....72 TO 74.
MIN HUMIDITY........27 TO 30 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 11 TO 21 MPH. GUSTS UP TO 20
                    MPH INCREASING TO 35 MPH IN THE LATE MORNING
                    AND AFTERNOON.
CWR.................20 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3700 FT AGL INCREASING TO 8000 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....NORTHWEST AROUND 28 MPH.
SMOKE DISPERSAL.....GOOD TO EXCELLENT (51500-201100 KNOT-FT).

$$
FORECASTER...MAZUR
REQUESTED BY...GALE KITTELL
TYPE OF REQUEST...WILDFIRE
.TAG 20100909.PARK_.02/CYS