FNUS75 KGJT 081534
FWSGJT

SPOT FORECAST FOR POWDERHORN...BLM
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
934 AM MDT THU APR 8 2010

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON APRIL 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE RIDGE WILL SLIDE ACROSS THE BURN AREA
TODAY WITH WEST WIND ALOFT. WINDS WILL GENERALLY BE TERRAIN-DRIVEN...
EXCEPT DURING PEAK HEATING WHEN MIXING SHOULD BRING WEST WINDS
DOWN TO THE SURFACE. EXPECT SMOKE TO SETTLE QUICKLY LATE TODAY
WHEN SHADOWS OVERTAKE THE SLOPE AND THE ATMOSPHERE STABILIZES.

LOCATION USED: LATITUDE 38.238 N LONGITUDE 107.0838

.TODAY...

SKY/WEATHER.........SUNNY (0-10%).
MAX TEMPERATURE.....43-48 F.
MIN HUMIDITY........20-24%.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 5 MPH UNTIL 1000...THEN
                    VARIABLE BECOMING UPSLOPE 4-7 MPH BY 1300.
                    OCCAIONALLY WEST 8 MPH DURING PEAK HEATING TIME
                    IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR UNTIL 1200...FAIR.
MIXING HEIGHT.......1000-2100 FT AGL INCREASING TO 4500 FT AGL IN
                    THE AFTERNOON.
TRANSPORT WINDS.....DOWNVALLEY 5 MPH UNTIL 1000...THEN UPSLOPE 5 MPH.
                    AFTER 1200...BECOMING WEST 13 MPH.

.TONIGHT...

SKY/WEATHER.........CLEAR.
MIN TEMPERATURE.....17-22 F.
MAX HUMIDITY........75-80%.
WIND (20 FT)........DOWNSLOPE 4-6 MPH.
SMOKE DISPERSAL.....POOR.
MIXING HEIGHT.......DECREASING TO 1000 FT AGL BY 2000.
TRANSPORT WINDS.....DOWNSLOPE/DOWNVALLEY 4-6 MPH.

$$
FORECASTER...JIM DANIELS
REQUESTED BY...BRIAN STEVENS
TYPE OF REQUEST...PRESCRIBED
.TAG 20100408.POWDE.02/GJT