FNUS75 KBOU 062037
FWSBOU

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

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

.DISCUSSION...WINDS WILL CONTINUE TO CAUSE THE BIGGEST PROBLEM FOR
FIRE ATTACK THIS AFTERNOON. WINDS AT MOUNTAIN TOP LEVEL WILL REMAIN
NORTHWESTERLY AT SPEEDS IN THE 25 TO 40 MPH RANGE FOR THE REMAINDER
OF THE AFTERNOON. WHILE LOWER DOWN IN THE VALLEYS AND ON THE LOWER
SLOPES...LIGHTER NORTH...NORTHEAST AND EAST WINDS CAN BE EXPECTED.
BY LATE THIS AFTERNOON OR EARLY THIS EVENING...SURFACE WIND SPEEDS
SHOULD DROP OFF QUITE A BIT AS THEY GRADUALLY SHIFT FROM AN
EAST-SOUTHEAST DIRECTION TO A WEST-SOUTHWEST DOWNSLOPE/DOWNVALLEY
COMPONENT WITH NIGHT FALL. FURTHERMORE WILL SHOULD SEE LITTLE CHANGE
IN THE EXTREMELY LOW RELATIVE HUMIDITY AND DEWPOINT VALUES UNTIL
AFTER DUSK WHEN FALLING TEMPERATURES WILL CAUSE RHS TO RISE TO THE
30 TO 40 PERCENT RANGE BY LATE TONIGHT.

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

.REST OF TODAY...
SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....64-68.
MIN HUMIDITY........4-10%.
20-FOOT WINDS.......NORTH-NORTHEAST WINDS 11-18 MPH WITH GUSTS TO 25
                    MPH...GRADUALLY SHIFTING TO THE EAST-NORTHEAST
                    AT SIMILAR SPEEDS AFTER 1600.
TRANSPORT WINDS.....WEST-NORTHWEST 28-40 MPH.
MIXING HEIGHT.......6200-7200 FT AGL.
SMOKE DISPERSAL.....EXCELLENT UNTIL 1600...THEN VERY GOOD.
HAINES INDEX........4 LOW.


.TONIGHT...
SKY/WEATHER.........CLEAR.
MIN TEMPERATURE.....LOWERING TO 36-39 BY 0500.
MAX HUMIDITY........32-38%.
20-FOOT WINDS.......SOUTH-SOUTHEAST WINDS 7-12 MPH UNTIL
                    2000...THEN DOWNSLOPE/DOWNVALLEY 2-8 MPH.
TRANSPORT WINDS.....WEST-SOUTHWEST 12-16 MPH UNTIL 2300...THEN
                    LIGHT.
MIXING HEIGHT.......LOWERING FROM 5400 FT AGL AROUND 1900 TO
                    LESS THAN 1500 FT AGL AFTER 0400.
SMOKE DISPERSAL.....GOOD UNTIL 1900...BECOMING POOR AFTER 2100.
HAINES INDEX........4 LOW.

.TUESDAY...
SKY/WEATHER.........SUNNY UNTIL 1200...THEN PARTLY CLOUDY(30-40%).
MAX TEMPERATURE.....68-74.
MIN HUMIDITY........16-21%.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 6-10 MPH UNTIL 1700...
                    BECOMING UPSLOPE/UPVALLEY 4-10 MPH.
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1200...THEN SOUTHWEST AROUND
                    12 MPH.
MIXING HEIGHT.......RISING TO 5000-5400 FT AGL AFTER 1200.
SMOKE DISPERSAL.....POOR UNTIL 1100...THEN FAIR UNTIL 1600...THEN
                    POOR.
HAINES INDEX........4 LOW.

.TUESDAY NIGHT...
SKY/WEATHER.........PARTLY CLOUDY(40-50%).
MIN TEMPERATURE.....49.
MAX HUMIDITY........56%.
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 2-8 MPH UNTIL 2400...THEN
                    WEST 8-11 MPH.
TRANSPORT WINDS.....LIGHT WINDS.
MIXING HEIGHT.......5200 FT AGL UNTIL 1900.
SMOKE DISPERSAL.....POOR.
HAINES INDEX........4 LOW.

.WEDNESDAY...
SKY/WEATHER.........PARTLY CLOUDY(50-60%) UNTIL 1200...THEN MOSTLY
                    CLOUDY(50-60%). SLIGHT CHANCE OF THUNDERSTORMS
                    AFTER 1200.
MAX TEMPERATURE.....71.
MIN HUMIDITY........31%.
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4-10 MPH.
TRANSPORT WINDS.....SOUTHWEST 12-16 MPH.
MIXING HEIGHT.......4600-5400 FT AGL AFTER 1200.
SMOKE DISPERSAL.....POOR UNTIL 1000. FAIR AFTER 1200.
HAINES INDEX........2 VERY LOW.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
MID 70S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY. LOWS IN THE LOWER 50S. HIGHS IN THE
LOWER 70S. TYPICAL SLOPE/VALLEY WINDS LESS THAN 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE LOWER 70S.
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.01/BOU