FNUS75 KCYS 232053
FWSCYS

SPOT FORECAST FOR LOWER DEER CREEK...WYO. STATE FORESTRY
NATIONAL WEATHER SERVICE CHEYENNE WY
253 PM MDT FRI JUL 23 2010

FORECAST IS BASED ON REQUEST TIME OF 1436 MDT ON JULY 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING...

.DISCUSSION...
WEST WINDS AT THE TIME OF OBSERVATION WILL TURN NORTHERLY BY 330
PM MDT AS A COLD FRONT DROPS SOUTH THROUGH THE BURN SITE. THESE
NORTH WINDS WILL PREVAIL THROUGH THE OVERNIGHT. RELATIVE
HUMIDITIES INITIALLY WILL BE IN THE UPPER 20S/LOW 30S...BUT WILL
INCREASE AS TEMPERATURES DECREASE BEHIND THE COLD FRONTAL PASSAGE.
NO PRECIPITATION IS EXPECTED THROUGH SATURDAY. COOLER OVERNIGHT
TEMPERATURES WILL RESULT IN GOOD HUMIDITY RECOVERIES.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....48-51.
MAX HUMIDITY........70 TO 75 PERCENT.
WIND (20 FT)........NORTH WINDS AT 15 TO 20 MPH WITH GUSTS TO 30
                    MPH UNTIL MIDNIGHT...BECOMING DOWNSLOPE/DOWNVALLEY
                    AT 5 TO 10 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5600 FT AGL DECREASING TO 900 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....NORTHEAST AROUND 14 MPH.
SMOKE DISPERSAL.....EXCELLENT BECOMING POOR (6800-89400 KNOT-FT).

.SATURDAY...

SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....75 TO 80.
MIN HUMIDITY........26 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5-9 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4400 FT AGL INCREASING TO 8000 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....EAST AROUND 10 MPH.
SMOKE DISPERSAL.....GOOD BECOMING EXCELLENT (34800-96600 KNOT-FT).

$$

FORECASTER...HAHN
REQUESTED BY...LUKE FORTNER
TYPE OF REQUEST...WILDFIRE
.TAG 20100723.LOWER.01/CYS