FNUS75 KRIW 271819
FWSRIW

SPOT FORECAST FOR BUTTE CREEK...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
1219 PM MDT MON AUG 27 2012

FORECAST IS BASED ON REQUEST TIME OF 1137 MDT ON AUGUST 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A WEAK SURGE OF MONSOONAL MOISTURE REMAINS OVER NORTHWEST WYOMING
THIS AFTERNOON. THIS COUPLED WITH DAYTIME HEATING WILL ALLOW FOR
ISOLATED SHOWERS AND THUNDERSTORMS TO DEVELOP LATER THIS AFTERNOON.
HOWEVER...DRIER AIR IS EXPECTED TO GRADUALLY WORK INTO THE AREA
THIS EVENING...WITH VERY LITTLE OR NO ACTIVITY EXPECTED AFTER 8 PM.
TUESDAY WILL BE MAINLY DRY AND WARM. WIDESPREAD ELEVATED TO
EXTREME FIRE CONDITIONS ARE POSSIBLE WEDNESDAY AS A STRONG STORM
MOVES ACROSS THE NORTHERN ROCKIES.


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

FORECASTER...LAVOIE

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (50-60 PERCENT). ISOLATED RAIN
                    SHOWERS AND DRY THUNDERSTORMS BY 1400.
MAX TEMPERATURE.....69-72 BELOW 10000 FT...63-68 ABOVE 10000 FT.
MIN HUMIDITY........20-23 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
                    AROUND 25 MPH AFTER 1500. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH SHIFTING TO THE WEST 25
                    TO 30 MPH AFTER 1500.
LAL.................1 UNTIL 1400...THEN 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT) THEN BECOMING
                    CLEAR (0-5 PERCENT). ISOLATED RAIN SHOWERS AND
                    DRY THUNDERSTORMS UNTIL 2100.
MIN TEMPERATURE.....44-47 BELOW 10000 FT...48-52 ABOVE 10000 FT.
MAX HUMIDITY........43-46 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH DECREASING TO
                    5 TO 10 MPH AFTER 2300. GUSTS UP TO 25
                    MPH DECREASING TO 20 MPH AFTER 2300. GUSTY
                    AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
                    IN THE EVENING.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH.
LAL.................2 UNTIL 2100...THEN 1.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.TUESDAY...
SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....71-74 BELOW 10000 FT...60-68 ABOVE 10000 FT.
MIN HUMIDITY........14-17 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO
                    AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 40S. SOUTHWEST
WINDS AROUND 12 MPH.
.WEDNESDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND DRY
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.
SOUTHWEST WINDS AROUND 17 MPH.
.THURSDAY...PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LAVOIE
REQUESTED BY...USFS
REASON FOR REQUEST...WILDFIRE
.TAG 20120827.BUTTE.01/RIW