FNUS73 KUNR 212057
FWSUNR

SPOT FORECAST FOR FOSSIL RX...USFS
NATIONAL WEATHER SERVICE RAPID CITY SD
257 PM MDT THU OCT 21 2010

FORECAST IS BASED ON IGNITION TIME OF 1830 MDT ON OCTOBER 21.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...TONIGHT WILL BE CLEAR AND COOL WITH FAIR RELATIVE
HUMIDITY RECOVERY AND LIGHT WINDS. AN UPPER LEVEL RIDGE OF HIGH
PRESSURE WILL BRING SUNNY SKIES AND WARM TEMPERATURES TO THE AREA
ON FRIDAY. HOWEVER LOW MIXING HEIGHTS ON FRIDAY WILL RESULT IN
POOR SMOKE DISPERSAL. AN UPPER LEVEL LOW WILL AFFECT THE AREA OVER
THE WEEKEND WITH A CHANCE OF SHOWERS AND COOLER TEMPERATURES.


.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
TEMPERATURE.........60 AT IGNITION...MIN 42.
RH..................43 PERCENT AT IGNITION...MAX 73 PERCENT.
WIND (20 FT)........WINDS EAST AT 5 MPH AT IGNITION...OTHERWISE
                    EAST WINDS AROUND 5 MPH EARLY IN THE EVENING
                    BECOMING LIGHT...THEN BECOMING NORTHWEST 5 TO 7
                    MPH LATE IN THE EVENING BECOMING LIGHT.
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.....WEST 5 TO 9 MPH.
SMOKE DISPERSAL.....POOR.

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........MAX 72.
RH..................MIN 31 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING EAST 5 TO 10 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.......1400 TO 2400 FT AGL.
TRANSPORT WINDS.....NORTHWEST 5 TO 6 MPH SHIFTING TO THE EAST 7 TO
                    10 MPH IN THE LATE MORNING AND AFTERNOON.
SMOKE DISPERSAL.....POOR.

$$
FORECASTER...LC
REQUESTED BY...FOSSIL RX
TYPE OF REQUEST...PRESCRIBED
.TAG 20101021.FOSSI.01/UNR