FNUS75 KGJT 212108
FWSGJT

SPOT FORECAST FOR STORMVEX - PM...NWS
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
308 PM MDT THU APR 21 2011

FORECAST IS BASED ON IGNITION TIME OF 1430 MDT ON APRIL 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...THUNDERSTORMS WILL DEVELOP AS A COLD FRONT PASSES
OVER THE PARK RANGE LATE THIS AFTERNOON AND EARLY THIS EVENING. BY
MID-EVENING THUNDERSTORMS WILL DECREASE BEHIND THE FRONT...BUT SHOWERS
WILL BECOME MORE WIDESPREAD AS THE UPPER LEVEL DISTURBANCE MOVES
OVERHEAD. DRIER AND COOLER CONDITIONS ARE EXPECTED FOR FRIDAY
BEHIND THIS STORM SYSTEM.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (70-80%). SHOWERS AND SCATTERED
                    THUNDERSTORMS IN THE EVENING...THEN SCATTERED
                    SHOWERS AFTER MIDNIGHT.
CLOUD BASES.........2000-3000 FT AGL...LOWERING TO THE LEVEL OF
                    THE RESEARCH SITE OR BELOW BY MID EVENING...AND
                    DURING SHOWERS AND THUNDERSTORMS EARLY THIS EVENING.
MIN TEMPERATURE.....21-26 F.
MAX HUMIDITY........95-100%.
20-FOOT WINDS.......SOUTHWEST 12-18 MPH WITH GUSTS TO 35 MPH EARLY
                    THIS EVENING...THEN SWITCHING TO WEST AND
                    DECREASING BY AROUND 2100. WEST 5-10 MPH
                    AFTER MIDNIGHT. GUSTY AND ERRATIC WINDS
                    POSSIBLE NEAR THUNDERSTORMS.
TRANSPORT WINDS.....SOUTHWEST 25 MPH...THEN WEST 22 MPH AFTER 2100.

.FRIDAY...

SKY/WEATHER.........MOSTLY CLOUDY (70-80%) EARLY IN THE MORNING...
                    THEN DECREASING CLOUDS (50-60% BY NOON).
                    ISOLATED SHOWERS.
CLOUD BASES.........2000-3000 FT AGL...INCREASING TO 5000-6000 FT AGL
                    IN THE AFTERNOON.
MAX TEMPERATURE.....32-36 F.
MIN HUMIDITY........40-45%.
20-FOOT WINDS.......WEST WINDS 15 MPH.
TRANSPORT WINDS.....WEST 26 MPH.

$$
FORECASTER...ELLEN HEFFERNAN
REQUESTED BY...DUTY FORECASTER
TYPE OF REQUEST...PRESCRIBED
.TAG 20110421.STORM.02/GJT