FNUS73 KUNR 211540
FWSUNR

SPOT FORECAST FOR AMERICAN ELK RX
NATIONAL WEATHER SERVICE RAPID CITY SD
940 AM MDT THU OCT 21 2010

IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER SERVICE.

SPOT FORECAST FOR AMERICAN ELK RX...NATIONAL PARK SERVICE
NATIONAL WEATHER SERVICE RAPID CITY SD
935 AM MDT THU OCT 21 2010

FORECAST IS BASED ON IGNITION TIME OF 1000 MDT ON OCTOBER 21.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...HIGH PRESSURE WILL CONTINUE TO 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 LIGHT OUT OF
THE WEST AT 5 TO 10 MPH. LOWER MIXING HEIGHTS ON FRIDAY WILL
RESULT IN SMOKE DISPERSAL IN THE HIGH END OF THE LOW CATEGORY
TO LOW END OF THE FAIR CATEGORY.

.TODAY...

SKY/WEATHER.........SUNNY.
TEMPERATURE.........61 AT IGNITION...MAX 70.
RH..................31 PERCENT AT IGNITION...MIN 22 PERCENT.
WIND (20 FT)........WINDS WEST AT 5 TO 10 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3800 TO 4300 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 10 MPH.
SMOKE DISPERSAL.....FAIR.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
TEMPERATURE.........MIN 45.
RH..................MAX 62 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 7 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......100 TO 600 FT AGL.
TRANSPORT WINDS.....WEST 5 TO 8 MPH SHIFTING TO THE NORTHWEST 6 TO
                    7 MPH LATE IN THE EVENING.
SMOKE DISPERSAL.....POOR.

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........MAX 72.
RH..................MIN 29 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 10 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3600 TO 4200 FT AGL.
TRANSPORT WINDS.....EAST 6 TO 12 MPH.
SMOKE DISPERSAL.....FAIR.

$$

REQUESTED BY...DAN SWANSON
REASON FOR REQUEST...UNDER THE INTERAGENCY AGREEMENT FOR METEOROLOGICAL SERVICES (USFS, BLM, NPS, U