FNUS75 KGJT 180303
FWSGJT

SPOT FORECAST FOR GRAMMAR...GRAMMAR IC
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
903 PM MDT FRI JUL 17 2009

FORECAST IS BASED ON REQUEST TIME OF 2031 MDT ON JULY 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...NOT MUCH CHANGE TO FORECAST FOR SATURDAY AS HIGH
PRESSURE SLOWLY SHIFTS EASTWARD. THEN ON SUNDAY A WEAK DISTURBANCE
AND INCREASED MID AND HIGH LEVEL MOISTURE WILL MOVE OVER THE AREA.
THIS WILL RESULT IN THE POSSIBILITY OF ISOLATED HIGH BASED
THUNDERSTORMS LATE IN THE DAY. THE LIGHT NORTHWEST FLOW ALOFT WILL
CONTINUE THROUGH SATURDAY NIGHT...THEN BECOME A LITTLE MORE WESTERLY
ON SUNDAY.


.SATURDAY (UNTIL SUNSET)...

SKY/WEATHER.........MOSTLY SUNNY (10-20%).
MAX TEMPERATURE.....92-96 F.
MIN HUMIDITY........7-12%.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 0-5 MPH UNTIL 1100...THEN
                    BECOMING NORTHWEST. INCREASING TO 4-8 MPH AFTER
                    1300. WINDS MAY SHIFT BETWEEN NORTHWEST AND
                    EAST AFTER 1600.
SMOKE DISPERSAL.....BECOMING EXCELLENT IN THE AFTERNOON.
HAINES INDEX........6 HIGH.
MIXING HEIGHT.......15800 FT AGL.
TRANSPORT WINDS.....NORTHWEST 10 MPH.

.TONIGHT (AFTER SUNSET)...

SKY/WEATHER.........MOSTLY CLEAR (20-30%).
MIN TEMPERATURE.....48-52 F.
MAX HUMIDITY........30-35%.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 0-5 MPH.
SMOKE DISPERSAL.....POOR (LESS THAN 5000 KNOT-FT).
HAINES INDEX........6 HIGH.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WINDS.....DOWNSLOPE/DOWNVALLEY 5 MPH.

.SUNDAY...

SKY/WEATHER.........MOSTLY SUNNY (20-30%) THEN BECOMING PARTLY
                    CLOUDY (40-50%...SOME VIRGA). ISOLATED SHOWERS
                    AND THUNDERSTORMS DEVELOPING AFTER 1400.
MAX TEMPERATURE.....90-95 F.
MIN HUMIDITY........10-15%.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 0-5 MPH UNTIL 1100...THEN
                    BECOMING NORTHWEST. INCREASING TO 4-8 MPH AFTER
                    1300. AT TIMES WINDS MAY BECOME WESTERLY AFTER
                    1500. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    VIRGA AND THUNDERSTORMS IN THE AFTERNOON.
SMOKE DISPERSAL.....BECOMING VERY GOOD IN THE AFTERNOON.
HAINES INDEX........6 HIGH.
MIXING HEIGHT.......15500 FT AGL.
TRANSPORT WINDS.....WEST-NORTHWEST 8 MPH.

$$
FORECASTER...ELLEN HEFFERNAN
REQUESTED BY...DAN HUISJEN
TYPE OF REQUEST...WILDFIRE
.TAG 20090717.GRAMM.01/GJT