FNUS73 KUNR 021205
FWSUNR

SPOT FORECAST FOR SHADEHILL EXERCISE...USFS/FWS/SD STATE
NATIONAL WEATHER SERVICE RAPID CITY SD
605 AM MDT SAT MAY 2 2009

FORECAST IS BASED ON IGNITION TIME OF 0900 MDT ON MAY 02.
IF CONDITIONS BECOME UNREPRESENTATIVE CONTACT THE
NATIONAL WEATHER SERVICE OFFICE IN RAPID CITY.

.DISCUSSION...TODAY WILL FEATURE MOSTLY SUNNY SKIES IN THE MORNING...
BECOMING PARTLY CLOUDY AROUND MIDDAY. THE LOW LEVEL INVERSION IS
EXPECTED TO MIX OUT AROUND 900 AM MDT...WHICH WILL ALLOW WEST WINDS TO
INCREASE AND BECOME NORTHWEST. TEMPERATURES WILL BE NEAR NORMAL...
WITH A HIGH AROUND 61. WINDS WILL BECOME LIGHT AND VARIABLE THIS EVENING
AS HIGH PRESSURE SETTLES OVER THE AREA.

.TODAY...

SKY/WEATHER.........SUNNY IN THE MORNING...BECOMING PARTLY CLOUDY.
TEMPERATURE.........44 AT IGNITION...MAX 61.
RH..................55 PERCENT AT IGNITION...MIN 24 PERCENT.
WIND (20 FT)........WINDS WEST AROUND 12 MPH AT IGNITION.
                    WINDS BECOMING NORTHWEST 16 TO 20 MPH
                    AROUND NOON.
CWR.................0 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 8000 TO 9000 FT AGL.
TRANSPORT WINDS.....WEST 12 TO 18 MPH SHIFTING TO THE NORTHWEST 22
                    TO 28 MPH LATE IN THE MORNING.
SMOKE DISPERSAL.....FAIR INCREASING TO EXCELLENT.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
TEMPERATURE.........MIN 34.
RH..................MAX 79 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 12 MPH EARLY IN THE
                    EVENING BECOMING LIGHT...THEN BECOMING WEST
                    AROUND 5 MPH AFTER MIDNIGHT.
CWR.................0 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......100 TO 600 FT AGL.
TRANSPORT WINDS.....NORTHWEST 20 TO 24 MPH DECREASING TO 7 TO 14
                    MPH EARLY IN THE EVENING.
SMOKE DISPERSAL.....GOOD DECREASING TO POOR EARLY IN THE EVENING.

$$
FORECASTER...GR
REQUESTED BY...SHANE DEL GROSSO
TYPE OF REQUEST...PRESCRIBED
.TAG 20090502.SHADE.01/UNR