FNUS75 KBOU 070317 CCA
FWSBOU

SPOT FORECAST FOR WEST SIDE EMERSON FIRE...USFS
NATIONAL WEATHER SERVICE DENVER CO
915 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
DIMINISH THROUGH THE REST OF THE EVENING AS THEY SHIFT FROM A
SOUTH-SOUTHEAST DIRECTION TO WEST-SOUTHWESTERLY DRAINAGE WIND
OVERNIGHT. 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 AFTERNOON. 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 EXCEPT IN THE VICINITY OF THE SMOKE
                    PLUME.
MIN TEMPERATURE.....37-41.
MAX HUMIDITY........39-45%.
20-FOOT WINDS.......SOUTHEAST WINDS 4-9 MPH UNTIL 2300...THEN
BECOMING WEST-SOUTHWEST 6-12 MPH. GUSTS TO AROUND 20 MPH ON
RIDGETOPS.
TRANSPORT WINDS.....SOUTHWEST 15-25 MPH UNTIL 2400...THEN
LIGHT.
MIXING HEIGHT.......LOWERING TO AROUND 1500 FT AGL AFTER 2400.
SMOKE DISPERSAL.....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 1200...THEN
SOUTHEAST 5-11 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...ENTREKIN
REQUESTED BY...RUSSELL DAWDY
REASON FOR REQUEST...WILDFIRE
.TAG 20100906.WESTS.04/BOU