FNUS73 KUNR 022252
FWSUNR

SPOT FORECAST FOR HEADQUARTERS WEST RX...NPS
NATIONAL WEATHER SERVICE RAPID CITY SD
452 PM MDT WED SEP 2 2009

FORECAST IS BASED ON IGNITION TIME OF 0930 MDT ON SEPTEMBER 03.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

...DRY AND WARM THE REST OF THE WEEK...

.DISCUSSION...AN UPPER LEVEL RIDGE OVER THE REGION WILL INFLUENCE
THE BURN AREA THE NEXT FEW DAYS AND BRING WARM AND DRY
CONDITIONS. MIXING HEIGHTS SHOULD BE SUFFICIENT TO PUT THE SMOKE
DISPERSAL INTO THE FAIR CATEGORY BOTH THURSDAY AND FRIDAY EVEN
THOUGH MIXING WINDS WILL BE RATHER LIGHT.

.TONIGHT...

SKY/WEATHER.........BECOMING CLEAR.
TEMPERATURE.........MIN 55.
RH..................MAX 65 PERCENT.
WIND (20 FT)........NORTHEAST WIND 4 TO 8 MPH BECOMING LIGHT
                    AND VARIABLE LATER THIS EVENING.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......300 TO 800 FT AGL.
TRANSPORT WINDS.....NORTHEAST 8 TO 14 MPH BECOMING NORTHWEST
                    5 TO 10 MPH LATER IN THE EVENING.
.SMOKE DISPERSAL....POOR.

.THURSDAY...

SKY/WEATHER.........MOSTLY SUNNY.
TEMPERATURE.........74 AT IGNITION...MAX 83.
RH..................45 PERCENT AT IGNITION...MIN 31 PERCENT.
WIND (20 FT)........EAST WIND 6 TO 12 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......RISING TO 6200 FT AGL.
TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
.SMOKE DISPERSAL....FAIR.

.THURSDAY NIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
TEMPERATURE.........MIN 57.
RH..................MAX 65 PERCENT.
WIND (20 FT)........SOUTHEAST 5 TO 10 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......300 TO 800 FT AGL.
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.
.SMOKE DISPERSAL....POOR.

$$
FORECASTER...JJ
REQUESTED BY...DAN SWANSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20090903.HEADQ.01/UNR