FNUS75 KBOU 070058
FWSBOU

SPOT FORECAST FOR WEST SIDE EMERSON FIRE...USFS
NATIONAL WEATHER SERVICE DENVER CO
650 PM MDT MON SEP 6 2010

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

.DISCUSSION...SURFACE AND 20-FOOT WIND SPEEDS WILL CONTINUE TO
DECREASE THROUGH THE EVENING AS THEY SHIFT FROM A SOUTH-SOUTHEAST
DIRECTION TO WEST-SOUTHWESTERLY DRAINAGE WINDS. MEANWHILE STRONGER
WEST-SOUTHWEST TRANSPORT WINDS HAVE ALREADY BEGUN TO DECREASE IN
SPEED...AND WILL CONTINUE TO DO SO FOR THE REST OF THIS EVENING.
STRONG COOLING OVERNIGHT WITH CLEAR SKIES AND VERY LOW RELATIVE
HUMIDITIES WILL PRODUCE STRONG SURFACE BASED INVERSIONS IN VALLEY
LOCATIONS. THIS WILL RESULT IN POOR SMOKE DISPERSAL. ON
TUESDAY...LIGHT DRAINAGE WINDS THROUGH MID-MORNING WILL GIVE WAY TO
RELATIVELY LIGHT UPSLOPE/UPVALLEY BREEZES BY LATE MORNING. RELATIVE
HUMIDITIES ON TUESDAY ARE NOT EXPECTED TO BE AS LOW AS THOSE
OBSERVED TODAY.

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

.REST OF TONIGHT...
SKY/WEATHER.........CLEAR AND IN THE VICINITY OF THE THICK
                    SMOKE PLUME.
MIN TEMPERATURE.....37-41.
MAX HUMIDITY........39-45%.
20-FOOT WINDS.......SOUTHEAST WINDS 7-14 MPH WITH GUSTS TO 22 MPH
                    UNTIL 2030...THEN WEST-SOUTHWEST 6-12 MPH WITH
                    GUSTS TO AROUND 20 MPH ON RIDGETOPS.
TRANSPORT WINDS.....SOUTHWEST 20-25 MPH UNTIL 2300...THEN LIGHT.
MIXING HEIGHT.......5300 FT AGL UNTIL 2000...LOWERING TO AROUND 1500
                    FT AGL AFTER 2400.
SMOKE DISPERSAL.....VERY GOOD UNTIL 1930...BECOMING POOR AFTER 2200.
HAINES INDEX........4 LOW.

.TUESDAY...
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....68-74.
MIN HUMIDITY........18-24%.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 5-10 MPH UNTIL 1030...THEN
                    UPSLOPE/UPVALLEY 4-8 MPH.
TRANSPORT WINDS.....WEST 12-22 MPH.
MIXING HEIGHT.......RISING TO 7400-8400 FT AGL BY 1500.
SMOKE DISPERSAL.....POOR UNTIL 1000...THEN FAIR UNTIL 1100...THEN
                    GOOD UNTIL 1200...THEN VERY GOOD UNTIL
                    1700...THEN GOOD.
HAINES INDEX........4 LOW.

.TUESDAY NIGHT...
SKY/WEATHER.........PARTLY CLOUDY(40-50%).
MIN TEMPERATURE.....50.
MAX HUMIDITY........64-68%.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 2-8 MPH UNTIL 2400...THEN
                    WEST 8-12 MPH.
TRANSPORT WINDS.....LIGHT WINDS.
MIXING HEIGHT.......5800 FT AGL UNTIL 1900.
SMOKE DISPERSAL.....POOR.
HAINES INDEX........3 VERY LOW.

.WEDNESDAY...
SKY/WEATHER.........PARTLY CLOUDY(50-60%) UNTIL 1200...THEN MOSTLY
                    CLOUDY(50-60%). SLIGHT CHANCE OF THUNDERSTORMS
                    AFTER 0900.
MAX TEMPERATURE.....70-74.
MIN HUMIDITY........38-42%.
20-FOOT WINDS.......WEST WINDS 8-13 MPH UNTIL 1200...THEN
                    UPSLOPE/UPVALLEY 4-10 MPH UNTIL 1500...THEN
                    SOUTHWEST 8-11 MPH.
TRANSPORT WINDS.....SOUTHWEST 12-16 MPH.
MIXING HEIGHT.......7000-8000 FT AGL AFTER 1200.
SMOKE DISPERSAL.....POOR UNTIL 1100. GOOD AFTER 1500.
HAINES INDEX........2 VERY LOW.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
LOWER 70S. WEST WINDS AROUND 13 MPH WITH GUSTS TO 25 MPH.
.FRIDAY...PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 60S. WEST WINDS AROUND 9 MPH WITH GUSTS TO 20 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER
60S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH.
.SUNDAY...MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER
70S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH.


$$
FORECASTER...BAKER WFO BOULDER
REQUESTED BY...RUSSELL DAWDY
REASON FOR REQUEST...WILDFIRE
.TAG 20100906.WESTS.03/BOU