FNUS75 KCYS 232044
FWSCYS

SPOT FORECAST FOR DEEP CREEK RX...BLM
NATIONAL WEATHER SERVICE CHEYENNE WY
244 PM MDT WED SEP 23 2009

FORECAST IS BASED ON IGNITION TIME OF 1300 MDT ON SEPTEMBER 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...AN UPPER LOW PRESSURE SYSTEM WILL BE OVER THE REGION
THROUGH FRIDAY. BREEZY NORTHEAST WINDS WILL EASE LATER THIS
EVENING AND COOL TEMPERATURES WITH GOOD HUMIDITY RECOVERIES WILL
OCCUR OVER THE BURN SITE AGAIN TONIGHT. THE MAIN BAND OF
PRECIPITATION ASSOCIATED WITH THE SYSTEM WILL REMAIN EAST OF THE
SITE TONIGHT WITH AN ISOLATED RAIN SHOWER POSSIBLE AFTER 1200
THURSDAY. THURSDAY NIGHT WILL AGAIN DROP DOWN INTO THE UPPER 30S
WITH GOOD HUMIDITY RECOVERIES. THE UPPER LOW WILL BEGIN TO MOVE TO
THE EAST ON FRIDAY WITH DRY AND WARM CONDITIONS RETURNING TO THE
REGION IN ITS WAKE. EXPECT MAXIMUM TEMPERATURES AT THE BURN SITE
TO CLIMB BACK INTO THE UPPER 60S TO LOWER 70S FOR FRIDAY THROUGH
SUNDAY...WITH MINIMUM RELATIVE HUMIDITIES DROPPING DOWN TO 19 TO
24 PERCENT EACH DAY. WINDS ARE EXPECTED TO BE MAINLY
UPSLOPE/UPVALLEY FRIDAY...BECOMING WESTERLY 10 TO 15 MPH ON
SATURDAY AND SUNDAY AS ANOTHER SYSTEM APPROACHES WYOMING. A COLD
FRONT ASSOCIATED WITH THE SYSTEM WILL MOVE ACROSS THE BURN SITE
SUNDAY EVENING BRINGING GUSTY NORTHEAST WINDS TO THE SITE BRIEFLY
BEFORE RETURNING TO THE SOUTHWEST AGAIN ON MONDAY. NO
PRECIPITATION IS EXPECTED AT THIS TIME WITH THE FRONT. MONDAY WILL
BE FEW DEGREES COOLER WITH RELATIVE HUMIDITIES INCREASING A FEW
PERCENTS.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT).
MIN TEMPERATURE.....31 TO 36.
MAX HUMIDITY........79 TO 85 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 11 TO 15 MPH WITH GUSTS UP TO
                    23 MPH THROUGH THE EARLY EVENING BECOMING
                    DOWNSLOPE/DOWNVALLEY 4 TO 7 MPH.
CWR.................10 PERCENT.
MIXING HEIGHT.......3000 FT AGL DECREASING TO 200 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHEAST 17 TO 20 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (1000-55500 KNOT-FT).

.THURSDAY...

SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT).
MAX TEMPERATURE.....59 TO 62.
MIN HUMIDITY........31 TO 34 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 3 TO 6 MPH BECOMING NORTH 7 TO 11 MPH
                    AFTER 1200.
CWR.................10 PERCENT.
MIXING HEIGHT.......3700 FT AGL INCREASING TO 7100 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....NORTH 13 TO 16 MPH.
SMOKE DISPERSAL.....FAIR TO EXCELLENT (19200-80500 KNOT-FT).

.THURSDAY NIGHT...

SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).
MIN TEMPERATURE.....36 TO 40.
MAX HUMIDITY........70 TO 76 PERCENT.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 4 TO 7 MPH.
CWR.................10 PERCENT.
MIXING HEIGHT.......4000 FT AGL DECREASING TO 400 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....NORTHEAST 7 TO 10 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (1500-37100 KNOT-FT).

$$
FORECASTER...MAZUR
REQUESTED BY...RENNER
TYPE OF REQUEST...PRESCRIBED
.TAG 20090924.DEEPC.01/CYS