FNUS73 KUNR 161941
FWSUNR

SPOT FORECAST FOR PCK RX...SD-BKF
NATIONAL WEATHER SERVICE RAPID CITY SD
141 PM MDT WED SEP 16 2009

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON SEPTEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...HIGH PRESSURE WILL CONTINUE TO BRING QUIET WEATHER
TO THE REGION THROUGH THE REST OF THE WEEK. THE MAIN CONCERN
CONTINUES TO BE SMOKE DISPERSAL RATES. MIXING HEIGHTS TOMORROW ARE
EXPECTED TO REACH 4000 T0 5000 FEET AND TRANSPORT WINDS SHOULD
REACH UP TO 10 MPH. A BEST...THIS WILL RESULT IN SMOKE DISPERSAL
JUST BARELY REACHING THE FAIR CATEGORY DURING PEAK AFTERNOON HEATING
TOMORROW...HOWEVER UNCERTAINTY STILL REMAINS IN THIS FORECAST.


.TONIGHT...

SKY/WEATHER.........CLEAR.
TEMPERATURE.........MIN 48.
RH..................MAX 77 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 7 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......300 TO 800 FT AGL.
TRANSPORT WINDS.....SOUTH 5 TO 9 MPH.
SMOKE DISPERSAL.....POOR.

.THURSDAY...

SKY/WEATHER.........SUNNY.
TEMPERATURE.........71 AT IGNITION...MAX 80.
RH..................34 PERCENT AT IGNITION...MIN 25 PERCENT.
WIND (20 FT)........WINDS SOUTHEAST AT 7 MPH AT
                    IGNITION...OTHERWISE SOUTHEAST WINDS 5 TO 9
                    MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4000 TO 5000 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.
SMOKE DISPERSAL.....POOR...BECOMING FAIR IN THE EARLY TO MID
                    AFTERNOON.

.THURSDAY NIGHT...

SKY/WEATHER.........CLEAR.
TEMPERATURE.........MIN 51.
RH..................MAX 61 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 6 TO 8 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......300 TO 800 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 14 MPH.
SMOKE DISPERSAL.....POOR.

$$

FORECASTER...CALDERON
REQUESTED BY...PAPENFUSS
TYPE OF REQUEST...PRESCRIBED
.TAG 20090917.PCKRX.01/UNR