FNUS73 KUNR 211514
FWSUNR

SPOT FORECAST FOR LITHOGRAPH RX...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE RAPID CITY SD
914 AM MDT TUE SEP 21 2010

FORECAST IS BASED ON IGNITION TIME OF 0930 MDT ON SEPTEMBER 21.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...AS HIGH PRESSURE MOVES EAST OF THE AREA TODAY...
SOUTHERLY WINDS WILL DEVELOP. A STRONG UPPER LEVEL DISTURBANCE WILL
BRING A CHANCE OF SHOWERS AND THUNDERSTORMS LATE WEDNESDAY INTO
THURSDAY...WITH WETTING RAINS LIKELY WEDNESDAY NIGHT AND THURSDAY.

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........58 AT IGNITION...MAX 69.
RH..................54 PERCENT AT IGNITION...MIN 34 PERCENT.
WIND (20 FT)........WINDS SOUTH AT 7 MPH AT IGNITION...BECOMING 7
                    TO 14 MPH IN THE LATE MORNING AND AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5100 TO 6100 FT AGL.
TRANSPORT WINDS.....SOUTH 2 TO 10 MPH INCREASING TO 15 TO 18 MPH
                    LATE IN THE MORNING.
SMOKE DISPERSAL.....POOR INCREASING TO GOOD LATE IN THE MORNING.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
TEMPERATURE.........MIN 46.
RH..................MAX 76 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 5 TO 10 MPH UNTIL EARLY MORNING
                    BECOMING LIGHT...THEN BECOMING WEST 5 TO 6 MPH
                    EARLY IN THE MORNING.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......200 TO 700 FT AGL.
TRANSPORT WINDS.....SOUTH 8 TO 17 MPH SHIFTING TO THE WEST 3 TO 6
                    MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....POOR.

.WEDNESDAY...

SKY/WEATHER.........PARTLY SUNNY THEN BECOMING CLOUDY. CHANCE OF
                    SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
TEMPERATURE.........MAX 67.
RH..................MIN 39 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 6 MPH EARLY IN THE MORNING
                    BECOMING LIGHT...THEN BECOMING SOUTH 5 TO 13
                    MPH IN THE LATE MORNING AND AFTERNOON.
CWR.................13 PERCENT.
LAL.................1 UNTIL 1200...THEN 3.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2300 TO 3300 FT AGL.
TRANSPORT WINDS.....WEST 5 TO 6 MPH SHIFTING TO THE EAST AROUND 3
                    MPH EARLY IN THE MORNING...THEN SHIFTING TO THE
                    SOUTH LATE IN THE MORNING.
SMOKE DISPERSAL.....POOR.

$$
FORECASTER...SS
REQUESTED BY...KELLY MATHIS
TYPE OF REQUEST...PRESCRIBED
.TAG 20100921.LITHO.01/UNR