FNUS73 KUNR 212029
FWSUNR

SPOT FORECAST FOR SUNDANCE RX 18...USFS
NATIONAL WEATHER SERVICE RAPID CITY SD
229 PM MDT THU OCT 21 2010

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON OCTOBER 22.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...TONIGHT WILL BE CLEAR AND COOL WITH POOR 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.........MIN 40.
RH..................MAX 48 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 7 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......200 TO 700 FT AGL.
TRANSPORT WINDS.....SOUTH 6 TO 10 MPH.
SMOKE DISPERSAL.....POOR.

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........56 AT IGNITION...MAX 65.
RH..................31 PERCENT AT IGNITION...MIN 27 PERCENT.
WIND (20 FT)........WINDS EAST AT 5 MPH AT IGNITION...OTHERWISE
                    SOUTHEAST WINDS AROUND 5 MPH EARLY IN THE
                    MORNING BECOMING LIGHT...THEN BECOMING EAST 5
                    TO 10 MPH IN THE LATE MORNING AND AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1500 TO 2500 FT AGL.
TRANSPORT WINDS.....EAST 6 TO 12 MPH.
SMOKE DISPERSAL.....POOR.

$$
FORECASTER...LC
REQUESTED BY...USFS
TYPE OF REQUEST...PRESCRIBED
.TAG 20101022.SUNDA.01/UNR