FNUS73 KUNR 021452
FWSUNR

SPOT FORECAST FOR LACREEK PILES...US FISH AND WILDLIFE
NATIONAL WEATHER SERVICE RAPID CITY SD
752 AM MST WED FEB 2 2011

FORECAST IS BASED ON IGNITION TIME OF 0900 MST ON FEBRUARY 02.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...QUIET WEATHER WITH WARMER TEMPERATURES IS EXPECTED AT THE
BURN SITE AS THE ARCTIC AIRMASS MOVES OUT OF THE AREA. LOW MIXING HEIGHTS
ARE EXPECTED OVER THE BURN SITE AS WARM AIR MOVING IN ALOFT WILL RESULT IN
AN INVERSION. THEREFORE...SMOKE DISPERSAL WILL BE POOR.

.TODAY...
SKY/WEATHER.........SUNNY.
TEMPERATURE.........MAX 12.
RH..................MIN 45 PERCENT.
WIND (20 FT)........WINDS WEST AT 7 MPH AT IGNITION...OTHERWISE
                    SOUTHWEST WINDS 6 TO 14 MPH.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......400 TO 1400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.
SMOKE DISPERSAL.....POOR.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY.
TEMPERATURE.........MIN -1.
RH..................MAX 87 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 7 TO 10 MPH.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......100 TO 600 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR.

.THURSDAY...
SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........MAX 35.
RH..................MIN 45 PERCENT.
WIND (20 FT)........WEST WINDS 8 TO 16 MPH.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......500 TO 800 FT AGL.
TRANSPORT WINDS.....WEST 10 TO 20 MPH INCREASING TO 15 TO 22 MPH IN
                    THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR.

$$
FORECASTER...JS
REQUESTED BY...CHRIS MASSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20110202.LACRE.01/UNR