FNUS73 KUNR 221616
FWSUNR

SPOT FORECAST FOR PINE RIDGE WEST RX...BUREAU OF INDIAN AFFAIRS
NATIONAL WEATHER SERVICE RAPID CITY SD
1016 AM MDT WED APR 22 2009

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 22.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...SUNNY SKIES AND VERY WARM TEMPERATURES WILL BE FOUND
TODAY ACROSS SOUTHWEST SOUTH DAKOTA. HIGH TEMPERATURES WILL BE IN
THE LOWER 80S...AND AFTERNOON MINIMUM RELATIVE HUMIDITIES WILL FALL
INTO THE 15 TO 18 PERCENT RANGE. GOOD ATMOSPHERIC MIXING WILL
ALLOW SOUTHWEST WINDS TO INCREASE TO 10 TO 15 MPH BY
IGNITION...AND FURTHER INCREASE TO 15 TO 20 MPH BY EARLY
AFTERNOON. SOUTHWEST WINDS WILL SLOWLY DIMINISH TO AROUND 10 MPH
BY LATE AFTERNOON.


.TODAY...

SKY/WEATHER.........SUNNY.
TEMPERATURE.........76 AT IGNITION...MAX 82.
RH..................22 PERCENT AT IGNITION...MIN 15 PERCENT.
WIND (20 FT)........WINDS SOUTHWEST AT 10 TO 15 MPH AT
                    IGNITION...OTHERWISE SOUTHWEST WINDS 15 TO 20
                    MPH THROUGH LATE AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......8200 TO 9200 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
SMOKE DISPERSAL.....FAIR INCREASING TO VERY GOOD EARLY IN THE
                    AFTERNOON.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
TEMPERATURE.........MIN 47.
RH..................MAX 66 PERCENT.
WIND (20 FT)........SOUTH WINDS 6 TO 10 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......300 TO 800 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 12 MPH.
SMOKE DISPERSAL.....POOR.

.THURSDAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........MAX 84.
RH..................MIN 15 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 10 TO 18 MPH INCREASING TO 16 TO
                    22 MPH IN THE AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......12000 TO 13000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 15 TO 25 MPH DECREASING TO AROUND 15
                    MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR INCREASING TO GOOD EARLY IN THE
                    MORNING...THEN INCREASING TO EXCELLENT IN THE
                    EARLY AFTERNOON.

$$
FORECASTER...SR
REQUESTED BY...MICHAEL TWISS
TYPE OF REQUEST...PRESCRIBED
.TAG 20090422.PINER.01/UNR