FNUS73 KUNR 211347
FWSUNR

SPOT FORECAST FOR COTTONWOOD RX...USDA FOREST SERVICE WALL RANGER DISTRICT
NATIONAL WEATHER SERVICE RAPID CITY SD
747 AM MDT TUE SEP 21 2010

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON SEPTEMBER 21.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...HIGH PRESSURE WILL MOVE EAST OF THE AREA TODAY...
ALLOWING SOUTHEASTERLY WINDS TO DEVELOP. A STRONG UPPER LEVEL
DISTURBANCE WILL BRING INCREASING CHANCES FOR SHOWERS AND
THUNDERSTORMS WEDNESDAY AND THURSDAY...WITH WETTING RAINS LIKELY
WEDNESDAY NIGHT AND THURSDAY.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........65 AT IGNITION...MAX 73.
RH..................50 PERCENT AT IGNITION...MIN 33 PERCENT.
WIND (20 FT)........WINDS EAST AT 7 MPH AT IGNITION. WINDS GRADUALLY
                    SHIFTING TO THE SOUTHEAST THEN INCREASING TO
                    12 TO 18 MPH.
CWR.................0 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4600 TO 5600 FT AGL.
TRANSPORT WINDS.....NORTH 6 TO 7 MPH SHIFTING TO THE SOUTHEAST 6 TO
                    14 MPH LATE IN THE MORNING...THEN INCREASING TO
                    AROUND 18 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....FAIR INCREASING TO GOOD LATE IN THE AFTERNOON.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
TEMPERATURE.........MIN 50.
RH..................MAX 83 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 6 TO 13 MPH.
CWR.................0 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......100 TO 600 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 9 TO 17 MPH.
SMOKE DISPERSAL.....POOR.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF SHOWERS AND
                    THUNDERSTORMS.
TEMPERATURE.........MAX 73.
RH..................MIN 48 PERCENT.
WIND (20 FT)........EAST WINDS 7 TO 14 MPH.
CWR.................15 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2500 TO 3500 FT AGL.
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH SHIFTING TO THE EAST 6 TO 10
                    MPH EARLY IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR.

$$
FORECASTER...GR
REQUESTED BY...CORY RICHARDSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20100921.COTTO.03/UNR