FNUS75 KRIW 221526
FWSRIW

SPOT FORECAST FOR BULL...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
926 AM MDT SUN AUG 22 2010

FORECAST IS BASED ON REQUEST TIME OF 0851 MDT ON AUGUST 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
ACTIVE DAY SHAPING UP OVER THE BULL FIRE AS A PACIFIC TROUGH
APPROACHES. SOUTHWEST WINDS WILL INCREASE THIS AFTERNOON BECOMING
GUSTY ONCE AGAIN. THE TROUGH MOVES THROUGH THIS EVENING DRAGGING A
COLD FRONT ACROSS. TIMING OF THE FRONT LOOKS TO BE AROUND 2000 (8
PM) MDT. SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND
EVENING. LIGHTNING AND GUSTY WINDS TO 45 MPH WILL BE THE MAIN
THREAT. WITH THE ATMOSPHERE MOISTENING UP...SOME COULD PRODUCE
SOME HEAVY RAIN. THE NEXT FEW DAYS LOOK DRY WITH LESS WIND.


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

FORECASTER...T.BAKER

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT) IN THE MORNING.
                    BECOMING CLOUDY (75-85 PERCENT) IN THE AFTERNOON.
                    SCATTERED SHOWERS AND THUNDERSTORMS AFTER 1300.
MAX TEMPERATURE.....NEAR 70.
MIN HUMIDITY........31-34 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH WITH GUSTS TO 20 MPH BECOMING
                    SOUTH TO SOUTHWEST 10 TO 15 MPH WITH GUSTS TO AROUND
                    30 MPH AROUND NOON. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTH TO SOUTHWEST 10 TO 15 MPH GUSTS TO 25 MPH
                    INCREASING 20 TO 25 MPH WITH GUSTS TO 35 MPH AROUND NOON.
LAL.................1 UNTIL 1300...THEN 4.
CHC OF WETTING RAIN.35 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). SCATTERED SHOWERS
                    AND THUNDERSTORMS IN THE EVENING. THUNDERSTORMS
                    BECOMING ISOLATED AFTER MIDNIGHT.
MIN TEMPERATURE.....42-45.
MAX HUMIDITY........90-95 PERCENT.
20 FOOT WINDS.......SOUTHWEST 10 TO 15 MPH WITH GUSTS TO AROUND
                    30 MPH...SHIFTING TO THE WEST TO NORTHWEST 10 TO
                    15 MPH GUSTS TO 25 MPH AROUND 2000.  SPEEDS SLOWLY
                    DIMINISHING AFTER MIDNIGHT. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH GUSTS TO 35 MPH SHIFTING TO THE
                    WEST TO NORTHWEST AT 15 TO 20 MPH GUSTS TO 30 MPH
                    AROUND 2000.  SPEEDS DIMINISHING 10 TO 15 MPH GUSTS 25 MPH
                    AROUND MIDNIGHT.
LAL.................4 UNTIL 2400...THEN 2.
CHC OF WETTING RAIN.35 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.MONDAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT). SOME AFTERNOON CUMULUS.
MAX TEMPERATURE.....56-59.
MIN HUMIDITY........30-35 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS TO 20 MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH GUSTS TO 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...CLEAR. LOWS IN THE UPPER 30S. WINDS GENERALLY
LESS THAN 10 MPH.
.TUESDAY...CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID 60S.
WINDS GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...T.BAKER
REQUESTED BY...TIDC
REASON FOR REQUEST...WILDFIRE
.TAG 20100822.BULL_.01/RIW