FNUS75 KBOU 022340
FWSBOU

SPOT FORECAST FOR LEFTHAND...USFS
NATIONAL WEATHER SERVICE DENVER CO
538 PM MDT THU JUN 2 2011

IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A LARGE UPPER LEVEL TROUGH WILL BE OVER THE GREAT
BASIN TONIGHT KEEPING A BRISK SOUTHWEST FLOW ALOFT OVER THE FIRE
AREA.  AT THE SURFACE...A TROUGH OF LOW PRESSURE NEAR THE EAST
SLOPES OF THE MOUNTAINS WILL PUSH EASTWARD OVERNIGHT.  THIS WILL
BRING AN AREA OF RISING PRESSURE TO THE AREA OVERNIGHT WITH A SHIFT
TO UPSLOPE WINDS LATE TONIGHT.  SURFACE REPORTS NEAR THE FIRE SHOW
STRONGER WINDS THAN AT THE FIRE PER SE SO A FEW GUSTS MAY WORK THEIR
WAY INTO THE FIRE AREA...ESPECIALLY PRIOR TO SUNDOWN.

...THUNDERSTORMS IMPLY STRONG...GUSTY AND ERRATIC WINDS...

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....49-53.
MAX HUMIDITY........47-50%.
20-FOOT WINDS.......WEST TO SOUTHWEST 5-10 MPH WITH A FEW GUSTS TO
                    AROUND 25 MPH UNTIL AROUND SUNDOWN...THEN
                    DOWNSLOPE 5-10 MPH WITH AN OCCASIONAL GUST TO 15
                    MPH.  WINDS BECOMING NORTH TO NORTHEAST 2-6 MPH
                    AFTER ABOUT 0400.
TRANSPORT WINDS.....SOUTHWEST 28-36 MPH UNTIL 2400...THEN WEST
                    12-16 MPH.
MIXING HEIGHT.......11200 FT AGL UNTIL 1900. BELOW 1000 FT AGL
                    AFTER 2300.
SMOKE DISPERSAL.....EXCELLENT UNTIL 1900. POOR AFTER 2100.
HAINES INDEX........5 MODERATE.

$$
FORECASTER...WFO BOULDER
REQUESTED BY...FORT COLLINS DISPATCH
REASON FOR REQUEST...WILDFIRE
.TAG 20110602.LEFTH.02/BOU