FNUS73 KUNR 191931
FWSUNR

SPOT FORECAST FOR NEEDLES CLEARCUT RX...USFS
NATIONAL WEATHER SERVICE RAPID CITY SD
131 PM MDT TUE MAY 19 2009

FORECAST IS BASED ON IGNITION TIME OF 1700 MDT ON MAY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...A COLD FRONT IS EXPECTED TO CROSS THE AREA ON WEDNESDAY
MORNING. LEADING TO COOLER TEMPERATURES AND HIGHER RELATIVE HUMIDITY
THAN ON TUESDAY. IF THE FRONT MOVES SLOWER THAN EXPECTED...HIGH
HIGH TEMPERATURES WILL BE SLIGHLY WARMER THAN FORECAST AND MINIMUM
RELATIVE HUMIDITY WILL BE SLIGHTLY LOWER. THERE WILL BE A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS ON WEDNESDAY AFTERNOON AND EVENING.
COOL HIGH PRESSURE WILL THEN BUILD INTO THE AREA ON WEDNESDAY NIGHT.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS
                    IN THE AFTERNOON.
TEMPERATURE.........MAX 68.
RH..................MIN 34 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 10 TO 15 MPH SHIFTING TO THE
                    NORTHEAST 8 TO 10 MPH EARLY IN THE AFTERNOON.
CWR.................20 PERCENT.
LAL.................2.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......4300 TO 5300 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 20 MPH BECOMING NORTHEAST AROUND 10 MPH
                    EARLY IN THE AFTERNOON.
SMOKE DISPERSAL.....FAIR.

.WEDNESDAY NIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS.
TEMPERATURE.........MIN 36.
RH..................MAX 76 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 4 TO 7 MPH.
CWR.................20 PERCENT.
LAL.................2.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......400 TO 900 FT AGL.
TRANSPORT WINDS.....NORTH 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR.

.THURSDAY...

SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........MAX 58.
RH..................MIN 43 PERCENT.
WIND (20 FT)........NORTHEAST WINDS AROUND 6 MPH SHIFTING TO THE
                    SOUTHEAST 7 TO 9 MPH IN THE LATE MORNING.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6800 TO 7800 FT AGL.
TRANSPORT WINDS.....SOUTH 3 TO 10 MPH.
SMOKE DISPERSAL.....FAIR.

$$
FORECASTER...GR
REQUESTED BY...MILLER
TYPE OF REQUEST...PRESCRIBED
.TAG 20090520.NEEDL.01/UNR