FNUS73 KUNR 201854
FWSUNR

SPOT FORECAST FOR FOSSIL RX...USFS
NATIONAL WEATHER SERVICE RAPID CITY SD
1254 PM MDT WED OCT 20 2010

FORECAST IS BASED ON IGNITION TIME OF 1330 MDT ON OCTOBER 20.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...HIGH PRESSURE IS BRINGING SUNNY SKIES AND WARMER
TEMPERATURES TO THE AREA TODAY. HIGH TEMPERATURES WILL BE IN THE
UPPER 60S WITH THE AFTERNOON MINIMUM RELATIVE HUMIDITY CONTINUING
TO FALL TO AROUND 25 PERCENT. WINDS ARE OUT OF THE NORTHWEST AT 5
TO 10 MPH. GOOD SMOKE DISPERSAL WILL DECREASE TO POOR BY LATE
AFTERNOON AS TRANSPORT WINDS WEAKEN.

.REST OF TODAY...

SKY/WEATHER.........SUNNY.
TEMPERATURE.........MAX 69.
RH..................MIN 25 PERCENT.
WIND (20 FT)........WINDS NORTHWEST AT 5 TO 10 MPH IN THE
                    AFTERNOON BECOMING LIGHT.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4800 TO 5800 FT AGL.
TRANSPORT WINDS.....NORTH 9 TO 17 MPH SHIFTING TO THE NORTHEAST
                    AROUND 7 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....GOOD DECREASING TO POOR LATE IN THE AFTERNOON.

.TONIGHT...

SKY/WEATHER.........CLEAR.
TEMPERATURE.........MIN 38.
RH..................MAX 67 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE WINDS WILL LEAD TO
                    PREDOMINATELY TERRAIN DRIVEN VALLEY
                    WINDS...DOWNSLOPE AND DOWN VALLEY WINDS
                    AFTER SUNSET.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......100 TO 600 FT AGL.
TRANSPORT WINDS.....NORTHWEST 6 TO 7 MPH.
SMOKE DISPERSAL.....POOR.

.THURSDAY...

SKY/WEATHER.........SUNNY.
TEMPERATURE.........MAX 69.
RH..................MIN 22 PERCENT.
WIND (20 FT)........DOWNSLOPE AND DOWN VALLEY WINDS BECOMING
                    SOUTHEAST 5 TO 7 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3300 TO 4300 FT AGL.
TRANSPORT WINDS.....SOUTH 6 TO 9 MPH.
SMOKE DISPERSAL.....POOR.

$$
FORECASTER...CALDERON
REQUESTED BY...FOSSIL RX
TYPE OF REQUEST...PRESCRIBED
.TAG 20101020.FOSSI.01/UNR