FNUS75 KRIW 232109
FWSRIW

SPOT FORECAST FOR BUTTE CREEK...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
309 PM MDT THU AUG 23 2012

FORECAST IS BASED ON REQUEST TIME OF 1345 MDT ON AUGUST 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM NOON FRIDAY TO 9 PM MDT
SATURDAY...

.DISCUSSION...
DRY WEST-SOUTHWEST WINDS WILL CONTINUE THIS EVENING AND
TONIGHT...AS AN AREA OF LOW PRESSURE MOVES INTO THE PACIFIC
NORTHWEST THIS EVENING. THIS WILL RESULT IN A TIGHTENED PRESSURE
GRADIENT OVER THE FIRE FOR FRIDAY...WITH GUSTY WINDS CONTINUING.
COMBINE THESE GUSTY WINDS WITH POSSIBLE LOW HUMIDITY AND
CRITICALLY DRY FUELS...AND THE POTENTIAL EXISTS FOR CRITICAL FIRE
WEATHER BEHAVIOR. ANTICIPATED CONDITIONS APPEAR SIMILAR FOR
SATURDAY AFTERNOON AND EVENING. A FIRE WEATHER WARNING IS NOW IN
EFFECT FOR THE AREA FROM THIS AFTERNOON THROUGH SATURDAY EVENING.
PLEASE VISIT OUR FIRE WEATHER WATCH PRODUCT FOR ADDITIONAL
INFORMATION ON POSSIBLE PARAMETER VALUES AND TIMING.


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

FORECASTER...LAVOIE

.TONIGHT...
SKY/WEATHER.........CLEAR (0-5 PERCENT).
MIN TEMPERATURE.....42-45 BELOW 9500 FT...46-50 ABOVE 9500 FT.
MAX HUMIDITY........46-49 PERCENT BELOW 9500 FT...50-54 PERCENT
                    ABOVE 9500 FT.
20 FOOT WINDS.......SOUTHWEST WINDS 11 TO 16 MPH WITH GUSTS TO
                    AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST 25 TO 30 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH...DECREASING TO 4 OR LOW
                    POTENTIAL AFTER 0300.
MIXING HEIGHT.......4000-5000 FT AGL DECREASING TO 2000 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST 26 TO 32 MPH.
SMOKE DISPERSAL.....VERY GOOD DECREASING TO FAIR AFTER MIDNIGHT.

.FRIDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....65-68 BELOW 9500 FT...62-65 ABOVE 9500 FT.
MIN HUMIDITY........17-20 PERCENT BELOW 9500 FT...21-25 PERCENT ABOVE
                    9500 FT.
20 FOOT WINDS.......WEST WINDS 13 TO 22 MPH WITH GUSTS TO AROUND 40
                    MPH INCREASING TO AROUND 25 MPH WITH GUSTS TO
                    AROUND 40 MPH AFTER 1400.
RIDGE TOP WINDS.....WEST 25 TO 30 MPH INCREASING TO 35 TO 40 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.......4400-5400 FT AGL INCREASING TO 8000 FT AGL AFTER
                    1400.
TRANSPORT WINDS.....WEST 30 TO 35 MPH INCREASING TO 40 MPH AFTER 1400.
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT AFTER 1200.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...CLEAR. AREAS OF SMOKE. LOWS IN THE UPPER 30S.
SOUTHWEST WINDS AROUND 10 MPH.
.SATURDAY...CLEAR. AREAS OF SMOKE. LOWS IN THE LOWER 40S. HIGHS
IN THE MID 60S. SOUTHWEST WINDS AROUND 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 40S. HIGHS IN THE MID 60S. WINDS GENERALLY LESS
THAN 10 MPH.
.MONDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.
.TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS AROUND 70.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LAVOIE
REQUESTED BY...BUTTE FIRE IC
REASON FOR REQUEST...WILDFIRE
.TAG 20120823.BUTTE.01/RIW