FNUS73 KUNR 142059
FWSUNR

SPOT FORECAST FOR FORT MEADE RX 3 UNIT E...BLM SOUTH DAKOTA
NATIONAL WEATHER SERVICE RAPID CITY SD
259 PM MDT TUE SEP 14 2010

FORECAST IS BASED ON IGNITION TIME OF 1537 MDT ON SEPTEMBER 14.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...SMOKE DISPERSAL WILL CONTINUE TO IMPROVE THIS
AFTERNOON AS MIXING HEIGHTS INCREASE. 20 FOOT WINDS WILL INCREASE
BY MID AFTERNOON TO UP TO 15 MPH. A STRONG UPPER LEVEL SYSTEM
WILL CROSS THE REGION TONIGHT BRINGING SHOWERS AND THUNDERSTORMS
TO THE AREA TONIGHT AND WEDNESDAY. A COLD FRONT WILL CROSS THE
SITE EARLY WEDNESDAY MORNING WITH BREEZY NORTHWEST WINDS BEHIND
THE FRONT. TEMPERATURES WILL BE COOLER WITH HIGHS IN THE LOWER TO
MID 60S.

.REST OF TODAY...

SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........MAX 73.
RH..................MIN 51 PERCENT.
WIND (20 FT)........EAST WINDS 5 MPH...INCREASE TO 8 TO 14 MPH
                    IN THE NEXT COUPLE HOURS.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2500 TO 3500 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 14 TO 19 MPH.
SMOKE DISPERSAL.....FAIR.

.TONIGHT...

SKY/WEATHER.........CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS IN
                    THE EVENING...THEN SHOWERS AND THUNDERSTORMS
                    LIKELY AFTER MIDNIGHT.
TEMPERATURE.........MIN 50.
RH..................MAX 96 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 12 MPH SHIFTING TO THE
                    NORTHWEST 8 TO 12 MPH AFTER MIDNIGHT.
CWR.................41 PERCENT INCREASING TO 57 PERCENT AFTER
                    MIDNIGHT.
LAL.................3 UNTIL 2400...THEN 4.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......300 TO 800 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 13 TO 22 MPH SHIFTING TO THE SOUTH
                    AROUND 12 MPH AFTER MIDNIGHT...THEN SHIFTING TO
                    THE WEST 12 TO 13 MPH EARLY IN THE MORNING.
SMOKE DISPERSAL.....POOR.

.WEDNESDAY...

SKY/WEATHER.........CLOUDY THEN BECOMING PARTLY SUNNY. SCATTERED
                    THUNDERSTORMS AND CHANCE OF RAIN SHOWERS.
TEMPERATURE.........MAX 64.
RH..................MIN 56 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 7 TO 14 MPH SHIFTING TO THE
                    NORTH 16 TO 22 MPH IN THE LATE MORNING AND
                    AFTERNOON.
CWR.................41 PERCENT DECREASING TO 22 PERCENT IN THE
                    AFTERNOON.
LAL.................3.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3600 TO 4600 FT AGL.
TRANSPORT WINDS.....NORTHWEST 14 TO 22 MPH INCREASING TO 22 TO 25
                    MPH LATE IN THE MORNING.
SMOKE DISPERSAL.....FAIR INCREASING TO GOOD LATE IN THE MORNING.

$$
FORECASTER...CALDERON
REQUESTED BY...RYAN LARSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20100914.FORTM.02/UNR