FNUS73 KUNR 201241
FWSUNR

SPOT FORECAST FOR AMERICAN ELK RX...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE RAPID CITY SD
641 AM MDT WED OCT 20 2010

FORECAST IS BASED ON IGNITION TIME OF 1030 MDT ON OCTOBER 20.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...HIGH PRESSURE WILL BRING SUNNY SKIES AND VERY WARM
TEMPERATURES TO THE AREA TODAY. HIGH TEMPERATURES WILL BE AROUND
70 DEGREES WITH THE AFTERNOON MINIMUM RELATIVE HUMIDITY FALLING TO
AROUND 20 PERCENT. WINDS WILL BE OUT OF THE NORTHWEST AT 8 TO 16
MPH. DRY AND WARM CONDITIONS WILL CONTINUE THROUGH FRIDAY.

.TODAY...

SKY/WEATHER.........SUNNY.
TEMPERATURE.........60 AT IGNITION...MAX 69.
RH..................28 PERCENT AT IGNITION...MIN 19 PERCENT.
WIND (20 FT)........WINDS NORTHWEST AT 8 TO 16 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4900 TO 5900 FT AGL.
TRANSPORT WINDS.....NORTH 10 TO 20 MPH.
SMOKE DISPERSAL.....GOOD.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
TEMPERATURE.........MIN 41.
RH..................MAX 55 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTH AROUND 5 MPH.
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 3 TO 5 MPH.
SMOKE DISPERSAL.....POOR.

.THURSDAY...

SKY/WEATHER.........SUNNY.
TEMPERATURE.........MAX 69.
RH..................MIN 21 PERCENT.
WIND (20 FT)........SOUTH 7 TO 14 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3300 TO 4300 FT AGL.
TRANSPORT WINDS.....SOUTH 10 TO 20 MPH.
SMOKE DISPERSAL.....FAIR.

$$
FORECASTER...SR
REQUESTED BY...DAN SWANSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20101020.AMERI.01/UNR