FNUS75 KGJT 090635
FWSGJT

SPOT FORECAST FOR POWDERHORN...BLM
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
1235 AM MDT FRI APR 9 2010

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A WEAK DISTURBANCE WILL PASS WELL NORTH OF THE FIRE SITE RESULTING
IN A FEW CLOUDS AND A SLIGHT INCREASE IN WINDS TODAY. SUNSHINE AND
MECHANICAL TURBULENCE SUPPORT DEEP MIXING AND VERY GOOD SMOKE
DISPERSION. IN THE HOURS FOLLOWING SUNSET THIS EVENING...SURFACE
INVERSIONS WILL TAKE OVER AND WINDS WILL SHIFT TO A NORMAL DRAINAGE
FLOW.

.TODAY (THROUGH SUNSET)...

SKY/WEATHER.........MOSTLY SUNNY (20-30%).
MAX TEMPERATURE.....49-54 F.
MIN HUMIDITY........16-21%.
WIND (20 FT)........DOWNSLOPE 3 TO 5 MPH THROUGH 0900...BECOMING
                    UPSLOPE 3 TO 6 MPH BY 1100...FINALLY SETTLING
                    IN AT SOUTHWEST 5 TO 10 MPH WITH OCCASIONAL
                    GUSTS TO 15 MPH AFTER 1300.
SMOKE DISPERSAL.....BECOMING FAIR BY 1100...INCREASING TO VERY GOOD
                    BY 1300.
MIXING HEIGHT.......INCREASING TO 10000 FT AGL BY 1400.
TRANSPORT WINDS.....DOWNSLOPE 5 MPH THROUGH 0900...BECOMING WEST
                    16 MPH BY 1300.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR (20-30%).
MIN TEMPERATURE.....20-25 F.
MAX HUMIDITY........62-67%.
WIND (20 FT)........DOWNSLOPE 3 TO 5 MPH.
SMOKE DISPERSAL.....DECREASING TO FAIR BY 2000...THEN POOR SHORTLY
                    AFTER MIDNIGHT.
MIXING HEIGHT.......DECREASING TO 1000-2200 FT AGL IN THE LATE EVENING
                    AND OVERNIGHT.
TRANSPORT WINDS.....SOUTHWEST 20 MPH THROUGH 1900...THEN BECOMING
                    DOWNSLOPE 5 MPH BY 2200.

$$

FORECASTER...NORV LARSON
REQUESTED BY...BRIAN STEVENS
TYPE OF REQUEST...PRESCRIBED
.TAG 20100409.POWDE.01/GJT