FNUS75 KRIW 031146
FWSRIW

SPOT FORECAST FOR BULL...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
546 AM MDT FRI SEP 3 2010

FORECAST IS BASED ON REQUEST TIME OF 1947 MDT ON SEPTEMBER 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A RIDGE OVER THE AREA WILL RESULT IN A MOSTLY SUNNY SKY...WARM
TEMPERATURES...AND MAINLY LIGHT TERRAIN DRIVEN WINDS OVER THE FIRE
SITE TODAY. DRY AND WARM CONDITIONS ARE EXPECTED TO CONTINUE
SATURDAY...BUT BREEZY WESTERLY WINDS ARE EXPECTED TO DEVELOP
SATURDAY AFTERNOON...WITH FREQUENT GUSTS ABOVE 25 MPH. IN ADDITION
TO THE WINDS...RELATIVE HUMIDITY SATURDAY AFTERNOON IS EXPECTED TO
DROP DOWN TO AROUND 15 PERCENT.

A COLD FRONT IS FORECAST TO MOVE THROUGH AROUND NOON SUNDAY
BRINGING A BREEZY TO WINDY DAY WITH COOLER TEMPERATURES AND
A CHANCE FOR SHOWERS AND THUNDERSTORMS.

...THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS...
...HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT...

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....70-75.
MIN HUMIDITY........15-20 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH BY 1000. GUSTS AROUND
                    12 MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....EAST SOUTHEAST 4 TO 8 MPH...SWITCHING TO WEST
                    SOUTHWEST AROUND 10 MPH BETWEEN NOON AROUND 1400.
                    GUSTS AROUND 18 MPH AFTER 1400.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2300-3300 FT AGL INCREASING TO 5800-6800 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH SHIFTING TO THE
                    WEST SOUTHWEST IN THE EARLY AFTERNOON.
SMOKE DISPERSAL.....POOR (28700 KNOT-FT) INCREASING TO GOOD (68900
                    KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....44-48.
MAX HUMIDITY........AROUND 35 PERCENT.
20 FOOT WINDS.......BECOMING DOWNSLOPE/DOWNVALLEY 3-5 MPH AROUND 2000.
RIDGE TOP WINDS.....WEST SOUTHWEST 5-10 MPH...BECOMING LIGHT AND
                    VARIABLE BY MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......5800-6800 FT AGL DECREASING TO 2400-3400 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST SOUTHWEST 5-10 MPH...BECOMING LIGHT AND
                    VARIABLE BY MIDNIGHT.
SMOKE DISPERSAL.....GOOD (80100 KNOT-FT) DECREASING TO POOR (27900
                    KNOT-FT) BY 2100.

.SATURDAY...
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....72-78.
MIN HUMIDITY........AROUND 15 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH BY 1000...THEN BECOMING
                    WEST SOUTHWEST 9-13 MPH BETWEEN 1300 AND 1500.
                    FREQUENT GUSTS AROUND 25 MPH AFTER 1400.
RIDGE TOP WINDS.....BECOMING SOUTHWEST 5-10 MPH BETWEEN 0900 AND 1100
                    THEN BECOMING WEST SOUTHWEST 15-20 MPH BETWEEN
                    1300 AND 1500. GUSTS AROUND 30 MPH AFTER 1400.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3700-4700 FT AGL INCREASING TO 9700-10700 FT
                    AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST SOUTHWEST AROUND 15 MPH...INCREASING TO
                    AROUND 25 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....FAIR (41300 KNOT-FT) INCREASING TO EXCELLENT
                    (186400 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY NIGHT...MOSTLY CLEAR. LOWS IN THE LOWER 40S. WINDS
GENERALLY LESS THAN 10 MPH.

.SUNDAY...COOLER. PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S.
WEST TO SOUTHWEST WINDS 10-20 MPH.

.LABOR DAY...PARTLY CLOUDY WITH CHANCE OF SNOW SHOWERS AND
SHOWERS. LOWS IN THE LOWER 30S. HIGHS AROUND 50. WINDS GENERALLY
LESS THAN 10 MPH.

.TUESDAY...WARMER. PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN
THE LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...LOCKWOOD
REASON FOR REQUEST...WILDFIRE
.TAG 20100902.BULL_.01/RIW