FNUS75 KGJT 082209
FWSGJT

SPOT FORECAST FOR PACK CREEK PILES...USFS
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
409 PM MDT THU APR 8 2010

FORECAST IS BASED ON IGNITION TIME OF 1400 MDT ON APRIL 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...MILD AND DRY SOUTHWEST FLOW WILL BE ACROSS THE BURN
AREA FRIDAY AND SATURDAY. GUSTY WINDS WILL DEVELOP EACH AFTERNOON
AS MIXING OCCURS. A FRONT WILL STALL OVER NORTHEAST UTAH FRIDAY
EVENING AND BE CLOSE ENOUGH TO KEEP GRADIENT WINDS PRESENT A BIT
LONGER THAN NORMAL FRIDAY EVENING BEFORE DECOUPLING AND TURNING
TO DRAINAGE WINDS.

.FRIDAY...

SKY/WEATHER.........MOSTLY SUNNY (10-20%).
MAX TEMPERATURE.....54-59 F.
MIN HUMIDITY........12-17%.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 3-5 MPH UNTIL 1000...THEN
                    BECOMING UPSLOPE/UPVALLEY 4-7 MPH BY 1230. AFTER
                    1400...SOUTHWEST 8-12 MPH WITH OCCASIONAL GUSTS
                    TO 25 MPH.
CLEARING INDEX......1000+ AFTER 1300.
MIXING HEIGHT.......8000 FT AGL.
TRANSPORT WINDS.....DOWNSLOPE/DOWNVALLEY 5 MPH UNTIL 1000...THEN VARIABLE
                    BECOMING SOUTHWEST 18 MPH AFTER 1300.

.FRIDAY NIGHT...

SKY/WEATHER.........CLEAR (0-10%).
MIN TEMPERATURE.....35-40 F.
MAX HUMIDITY........34-39%.
WIND (20 FT)........SOUTHWEST 8-12 MPH AT 1800 BECOMING DOWNSLOPE/
                    DOWNVALLEY 5 MPH BY 2200.
CLEARING INDEX......520 AT 1800 LOWERING TO 50 BY 2100.
MIXING HEIGHT.......4000 FT AGL DECREASING TO 1500 FT AGL BY 2100.
TRANSPORT WINDS.....SOUTHWEST 15 MPH UNTIL 2000...THEN BECOMING
                    DOWNSLOPE/DOWNVALLEY 5 MPH BY 2200.

.SATURDAY...

SKY/WEATHER.........PARTLY CLOUDY (30-40%).
MAX TEMPERATURE.....54-59 F.
MIN HUMIDITY........15-20%.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 3-5 MPH UNTIL 1000...THEN
                    BECOMING UPSLOPE 3-6 MPH BY 1200. AFTER 1300...
                    SOUTHWEST 9-13 MPH WITH OCCASIONAL GUSTS TO 30 MPH.
CLEARING INDEX......1000+ AFTER 1300.
MIXING HEIGHT.......8000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 17 MPH AFTER 1300.

$$
FORECASTER...JIM DANIELS
REQUESTED BY...JAMES WILLIAMS
TYPE OF REQUEST...PRESCRIBED
.TAG 20100409.PACKC.01/GJT