FNUS75 KGJT 300635
FWSGJT

SPOT FORECAST FOR COLUMBINE...FS
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1235 AM MDT WED SEP 30 2009

FORECAST IS BASED ON IGNITION TIME OF 2055 MDT ON SEPTEMBER 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL NOON MDT TODAY...

.DISCUSSION...DIFFICULT WEATHER SCENARIO TODAY. INITIAL FRONTAL
BOUNDARY PUSHES ACROSS IN THE MORNING BUT IS WEAKENING AS IT
OUTRUNS THE COLDER AIR ALOFT. UPPER DISTURBANCES IN SOUTHWEST
FLOW WILL KEEP SOME SHOWERS AROUND. A PERIOD OF CLEARING IN THE
AFTERNOON SHOULD ALLOW FOR BETTER MIXING AND A STRENGTHENING OF
SURFACE WINDS...BEFORE THE STRONGER COLD FRONT AND ACTUAL WIND
SHIFT MOVES THROUGH BETWEEN 1500 AND 1800 MDT.

COLDER AIR SPREADS IN TONIGHT AND THURSDAY. MORE STABLE ALOFT ON
THURSDAY WITH MUCH WEAKER WINDS AT THE SURFACE.

.TODAY...

SKY/WEATHER.........MOSTLY CLOUDY (70-80%) UNTIL 1200...THEN BECOMING
                    PARTLY CLOUDY (50%) BEFORE CLOUDS INCREASING LATE.
                    SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS.
MAX TEMPERATURE.....50-55 F.
MIN HUMIDITY........27-32%.
20-FOOT WINDS.......WINDY. SOUTHWEST 10-15 MPH WITH GUSTS TO 30 MPH
                    UNTIL 1000...THEN INCREASING TO 15-20 MPH WITH
                    GUSTY TO 45 MPH BY 1300. WINDS BECOMING WEST
                    AFTER 1500. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS.
SMOKE DISPERSAL.....FAIR INCREASING TO EXCELLENT BY 1200.
MIXING HEIGHT.......1500 FT AGL INCREASING TO 6000 FT AGL IN THE
                    AFTERNOON...HIGHER NEAR SHOWERS OR THUNDERSTORMS.
TRANSPORT WINDS.....SOUTHWEST 50 MPH BECOME WEST LATE.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (70-80%)...BECOMING PARTLY CLOUDY
                    (50-60%) AFTER 0100. SCATTERED SHOWERS.
MIN TEMPERATURE.....26-31 F.
MAX HUMIDITY........66-71%.
20-FOOT WINDS.......BREEZY. WEST WINDS 10-20 MPH WITH GUSTS UP TO 40
                    40 MPH UNTIL 2100...THEN BECOMING NORTHWEST
                    10-15 MPH.
SMOKE DISPERSAL.....EXCELLENT DECREASING TO GOOD IN THE LATE EVENING AND
                    FAIR AFTER 0100.
MIXING HEIGHT.......4000 FT AGL DECREASING TO 2500 FT AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST 36 MPH BECOMING WEST-NORTHWEST 18 MPH AFTER
                    MIDNIGHT.

.THURSDAY...

SKY/WEATHER.........PARTLY CLOUDY (50-60%). ISOLATED SHOWERS.
MAX TEMPERATURE.....35-40 F.
MIN HUMIDITY........37-42%.
20-FOOT WINDS.......NORTHWEST WINDS 5-10 MPH.
SMOKE DISPERSAL.....FAIR BECOMING GOOD IN THE AFTERNOON.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 18 MPH.

$$
FORECASTER...JIM DANIELS
REQUESTED BY...DAN HUISJEN
TYPE OF REQUEST...PRESCRIBED
.TAG 20090929.COLUM.02/GJT