FNUS73 KUNR 290040
FWSUNR

SPOT FORECAST FOR GHOST CANYON...US FOREST SERVICE
NATIONAL WEATHER SERVICE RAPID CITY SD
640 PM MDT WED MAR 28 2012

FORECAST IS BASED ON REQUEST TIME OF 1822 MDT ON MARCH 28.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

...FIRE WEATHER WATCH IN EFFECT THURSDAY AFTERNOON...

.DISCUSSION...
IT WILL BE RELATIVELY MILD OVERNIGHT AS THE RELATIVE HUMIDITY DOES
NOT RECOVER VERY WELL. WINDS FOR THE REST OF TONIGHT WILL BE
DRIVEN BY LOCAL DRAINAGE PATTERNS. HOWEVER...SOME GUSTY WINDS MAY
SURFACE OVERNIGHT AS THE INVERSION IS SHALLOW AND STRONG WINDS
EXIST AT THE BASE OF THE INVERSION. A COLD FRONT WILL APPROACH
AFTER MIDNIGHT...AND THIS WILL SWITCH WINDS TO THE NORTHWEST
BETWEEN 400 AND 500 AM THURSDAY. THE COMBINATION OF THE GUSTY
NORTHWEST WINDS...LOW RELATIVE HUMIDITY...AND DRY FUELS HAS
PROMPTED A FIRE WEATHER WATCH FOR THURSDAY AFTERNOON.

.TONIGHT...

SKY/WEATHER.........INCREASING CLOUDS...BECOMING CLOUDY AFTER
                    MIDNIGHT.
MIN TEMPERATURE.....AROUND 46.
MAX HUMIDITY........51 PERCENT.
WIND (20 FT)........BECOMING DOWNSLOPE/WEST 3 TO 7 MPH. WINDS MAY
                    GUST TO 15 MPH OUT OF THE SOUTHWEST AT TIMES.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......200 TO 500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
SMOKE DISPERSAL.....POOR.

.THURSDAY...

SKY/WEATHER.........CLOUDY EARLY...THEN BECOMING MOSTLY SUNNY.
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........19 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 7 TO 15 MPH.
CWR.................0 PERCENT.
LAL.................1.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4000 TO 5000 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 20 TO 25 MPH.
SMOKE DISPERSAL.....GOOD TO VERY GOOD.

$$
FORECASTER...MB
REQUESTED BY...TERRY TOMPKINS
TYPE OF REQUEST...WILDFIRE
.TAG 20120328.GHOST.01/UNR