FNUS73 KUNR 201341
FWSUNR

SPOT FORECAST FOR COTTONWOOD RX...USDA FOREST SERVICE WALL RANGER DISTRICT
NATIONAL WEATHER SERVICE RAPID CITY SD
741 AM MDT TUE APR 20 2010

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 20.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...
AN UPPER LEVEL DISTURBANCE MOVING ACROSS WESTERN SOUTH DAKOTA WILL BRING
SCATTERED SHOWERS THROUGH THE DAY. SCATTERED THUNDERSTORMS ARE EXPECTED
THIS AFTERNOON. THE HIGH TEMPERATURE WILL BE AROUND 65 AND MINIMUM RELATIVE
HUMIDITY AROUND 45 PERCENT.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY. SCATTERED SHOWERS IN THE MORNING...
                    SCATTERED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 65.
MIN HUMIDITY........AROUND 45 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 7 TO 13 MPH.
CWR.................20 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......AROUND 3500 FT AGL.
TRANSPORT WINDS.....EAST 10 TO 15 MPH.
SMOKE DISPERSAL.....FAIR.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
MIN TEMPERATURE.....40.
MAX HUMIDITY........AROUND 95 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 5 TO 12 MPH IN THE EVENING
                    BECOMING LIGHT AND VARIABLE.
CWR.................0 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......500 TO 1000 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....AROUND 65.
MIN HUMIDITY........35-40 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 6 TO 14 MPH.
CWR.................0 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3800 TO 4800 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 10 TO 18 MPH.
SMOKE DISPERSAL.....FAIR INCREASING TO GOOD IN THE AFTERNOON.

$$
FORECASTER...NWS
REQUESTED BY...CORY RICHARDSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20100420.COTTO.01/UNR