FNUS75 KGJT 231428
FWSGJT

SPOT FORECAST FOR USA PC 2012 - STAGE 4...PITKIN COUNTY SHERIFF
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
828 AM MDT THU AUG 23 2012

FORECAST IS BASED ON INCIDENT TIME OF 0758 MDT ON AUGUST 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...FLASH FLOOD WATCH IN EFFECT FROM NOON THROUGH THIS EVENING...

.DISCUSSION...THE AIRMASS HAS BECOME EXTREMELY MOIST OVER THE PAST
24 HOURS AS TROPICAL MOISTURE FROM THE MEXICAN PLATEAU CONTINUES
TO SWEEP OVER THE AREA. DAYTIME WARMING COMBINED WITH A
DISTURBANCE TO THE SOUTHWEST WORKING ON THIS DEEP MOISTURE WILL
BRING NUMEROUS SHOWERS TO THE INDEPENDENCE PASS AREA IN ADDITION
TO THUNDERSTORMS DURING THE AFTERNOON. HEAVY RAIN IS LIKELY FROM
DEVELOPING THUNDERSTORMS PROMPTING THE ISSUANCE OF FLASH FLOOD
WATCH WHICH GOES INTO EFFECT AT NOON AND CONTINUES THROUGH THE
REMAINDER OF THE DAY.

.TODAY...

SKY/WEATHER.........CLOUDY (80-90%). NUMEROUS SHOWERS AND A FEW
    THUNDERSTORMS THROUGH 1300. THUNDERSTORM
    COVERAGE AND INTENSITY INCREASING DURING THE
    LATTER PART OF THE AFTERNOON...FAVORING THE
    HIGHER TERRAIN.
MAX TEMPERATURE.....TEMPERATURES RIGHT AROUND 60 IN THE ASPEN
    AREA AT RACE START. AS THE PELOTON MOVES UP
                    TO INDEPENDENCE PASS LOOK FOR TEMPERATURES
    DIPPING TO NEAR 50. AS THE RACERS MOVE BACK
    WEST OF THE CONTINENTAL DIVIDE TEMPERATURES
    WILL RISE TO THE UPPER 60S TO NEAR 70.
MIN HUMIDITY........60-65% IN THE MOUNTAINS
    45-50 IN THE VALLEYS.
20-FOOT WINDS.......LIGHT DOWNSLOPE WINDS 2 TO 5 MPH THROUGH
    0930...BECOMING NORTHWEST 4 TO 8 MPH BY
                    NOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR
    THUNDERSTORMS.

$$

FORECASTER...NORV LARSON
REQUESTED BY...DEPUTY GRAY
TYPE OF REQUEST...SAR
.TAG 20120823.USAPC.01/GJT