FNUS75 KGJT 211944
FWSGJT

SPOT FORECAST FOR USA PCC 2012 - STAGE 3  GUNNISON...CSP IMT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
144 PM MDT TUE AUG 21 2012

FORECAST IS BASED ON INCIDENT TIME OF 1303 MDT ON AUGUST 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...NOTE FORECAST IS FOR GUNNISON TO COTTONWOOD PASS AND INDEPENDENCE
PASS TO ASPEN...

.DISCUSSION...
MOISTURE AND INSTABILITY WILL BEGIN TO INCREASE FROM THE SOUTH
TONIGHT AS A TROUGH OF LOW PRESSURE BEGINS TO MOVE ONSHORE FROM THE
PACIFIC. THIS WILL LEAD TO THE DEVELOPMENT OF WIDESPREAD SHOWERS AND
THUNDERSTORMS WEDNESDAY AFTERNOON OVER THE HIGHER ELEVATIONS OF THE
COURSE...AS ADDITIONAL MONSOONAL MOISTURE MOVES INTO THE FORECAST
AREA. TEMPERATURES WILL BE A LITTLE BELOW SEASONAL NORMALS DUE TO
INCREASING CLOUD COVER. WINDS WILL GENERALLY BE TERRAIN DRIVEN...
BECOMING UPSLOPE/UPVALLEY BY EARLY AFTERNOON.

.THURSDAY...

SKY/WEATHER.........PARTLY CLOUDY MORNING (40-50% NEAR GUNNISON)
                    THEN BECOMING MOSTLY CLOUDY BY AFTERNOON (70-
                    80% NEAR ASPEN). SCATTERED SHOWERS AND
                    THUNDERSTORMS DEVELOPING IN THE AFTERNOON.
MAX TEMPERATURE.....62-67 F NEAR GUNNISON.
                    72-77 F NEAR ASPEN.
MIN HUMIDITY........30-35% NEAR GUNNISON.
                    20-25% NEAR ASPEN.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3-8 MPH UNTIL 1000...THEN
                    LIGHT AND VARIABLE. BECOMING UP SLOPE/UP VALLEY
                    5-10 MPH AROUND 1200. A FEW GUSTS TO 15-18 MPH
                    POSSIBLE AFTER 1400. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR ANY THUNDERSTORMS.

$$
FORECASTER...MIKE CHAMBERLAIN
REQUESTED BY...DEPUTY BURCH ETTA
TYPE OF REQUEST...SAR
.TAG 20120821.USAPC.01/GJT