FNUS75 KRIW 071121
FWSRIW

SPOT FORECAST FOR BULL...FOREST SERVICE
NATIONAL WEATHER SERVICE RIVERTON WY
521 AM MDT SAT AUG 7 2010

FORECAST IS BASED ON REQUEST TIME OF 1856 MDT ON AUGUST 06.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...THE WEATHER PATTERN WILL NOT CHANGE MUCH TODAY
THROUGH SUNDAY AND MONDAY. A MOIST SOUTHWEST FLOW ALOFT WITH
A DAILY CHANCE OF AFTERNOON AND EVENING SHOWERS AND STORMS.
THERE WILL BE PLENTY OF DRY HOURS BETWEEN ROUNDS OF SHOWERS
AND STORMS. THE WIND GUSTS AND LIGHTNING WILL BE THE MAIN
THREATS. A BURST OF HEAVY RAIN MAY OCCUR IF A STRONG STORM
WERE TO MOVE OVER THE BURN AREA.

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

FORECASTER...AR

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS THROUGH THE DAY.
MAX TEMPERATURE.....70 TO 75.
MIN HUMIDITY........25 TO 30 PERCENT.
WIND (20 FT)........EAST TO NORTHEAST AT 4 TO 8 MPH UNTIL 1200.
                    THEN WEST TO SOUTHWEST WIND AT 9 TO 14 MPH
                    WITH GUSTS AROUND 20 MPH. GUSTY AND ERRATIC
                    WINDS TO 35 MPH EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....EAST TO NORTHEAST 5 TO 10 MPH UNTIL NOON.
                    THEN WEST TO SOUTHWEST WIND AT 11 TO 16 MPH
                    WITH GUSTS AROUND 25 MPH.
LAL.................2.
CWR.................5 PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 7500-8000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....EAST AT 8 MPH UNTIL NOON. WIND SHIFTING TO THE
                    SOUTHWEST AROUND 20 MPH AFTER 1200.
SMOKE DISPERSAL.....POOR...INCREASING TO FAIR BY 1000...INCREASING
                    TO EXCELLENT BY 1500.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
                    THUNDERSTORMS ALL NIGHT.
MIN TEMPERATURE.....46-51.
MAX HUMIDITY........75 TO 80 PERCENT.
WIND (20 FT)........WEST TO SOUTHWEST WIND AT 7 TO 12 MPH WITH
                    GUSTS TO 17 MPH UNTIL SUNSET. THEN WIND BECOMING
                    DOWNSLOPE/DOWNVALLEY AT 3 TO 6 MPH.
                    GUSTY AND ERRATIC WINDS TO 30 MPH EXPECTED NEAR
                    THUNDERSTORMS.
RIDGE TOP WINDS.....WEST TO SOUTHWEST 11 TO 16 MPH WITH GUSTS TO
                    20 MPH UNTIL SUNSET. THEN WIND SHIFTING TO THE
                    EAST AROUND 10 MPH AROUND MIDNIGHT.
LAL.................2.
CWR.................5 PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 1000 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST AT 20 MPH UNTIL SUNSET...THEN
                    BECOMING EAST AT 8 MPH BY MIDNIGHT.
SMOKE DISPERSAL.....VERY GOOD...DECREASING TO POOR AFTER SUNSET.

.SUNDAY...
SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS OR STORMS IN
                    THE MORNING...THEN A CHANCE OF SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....69 TO 74.
MIN HUMIDITY........27 TO 32 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY AT 3 TO 5 MPH UNTIL NOON.
                    THEN SOUTH TO SOUTHWEST AT 5 TO 10 MPH WITH
                    GUSTS TO 15 MPH AFTER NOON. GUSTY AND ERRATIC
                    WINDS TO 35 MPH EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....EAST AT 5 TO 10 MPH UNTIL NOON.
                    THEN SOUTH TO SOUTHWEST AT 10 TO 15 MPH
                    AFTER 1200.
LAL.................1 UNTIL 1200...THEN 4.
CWR.................8 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 7000-7500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....EAST AROUND 8 MPH UNTIL NOON. THEN SOUTH TO
                    SOUTHWEST AT 15 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....BECOMING FAIR BY 1000...THEN BECOMING VERY GOOD
                    BY 1500.

.FORECAST DAYS 3 THROUGH 5...

.SUNDAY NIGHT...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. WINDS GENERALLY LESS THAN
10 MPH.

.MONDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
HIGHS IN THE MID 60S. WINDS GENERALLY LESS THAN 10 MPH.

.TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 60S. WINDS
GENERALLY LESS THAN 10 MPH.

.WEDNESDAY...MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS AROUND 40. HIGHS IN THE LOWER 70S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...ROSS
REQUESTED BY...BULL FEMO
REASON FOR REQUEST...WILDFIRE
.TAG 20100806.BULL_.01/RIW