FNUS75 KRIW 161846
FWSRIW

SPOT FORECAST FOR BUTTE CREEK...USFS
NATIONAL WEATHER SERVICE RIVERTON WY
1246 PM MDT THU AUG 16 2012

FORECAST IS BASED ON IGNITION TIME OF 1240 MDT ON AUGUST 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
BREEZY WEST TO NORTHWEST WIND CAN BE EXPECTED THIS AFTERNOON AND
EARLY EVENING. THE WIND SHOULD SUBSIDE BY LATE EVENING WITH A
CLEAR SKY ABOVE. OTHERWISE...HIGH PRESSURE BEGINS TO BUILD
IN FRIDAY WITH DRY CONDITIONS AND LOWERING RELATIVE HUMIDITY
INTO THE WEEKEND.


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

FORECASTER...LYNOTT

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....65-69.
MIN HUMIDITY........22-26 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH SHIFTING TO THE NORTHWEST
                    AROUND 20 MPH IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1800-2800 FT AGL INCREASING TO 5200-6200 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 9 TO 13 MPH SHIFTING TO THE NORTHWEST 20
                    TO 25 MPH DURING THE AFTERNOON.
SMOKE DISPERSAL.....GOOD (21500-65800 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....41-45.
MAX HUMIDITY........57-61 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH SHIFTING TO THE SOUTHWEST
                    AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5500-6500 FT AGL DECREASING TO 2100-3100 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST 12 TO 16 MPH SHIFTING TO THE SOUTHWEST
                    8 TO 12 MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....POOR TO FAIR (16000-59200 KNOT-FT).

.FRIDAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....66-71.
MIN HUMIDITY........17-21 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2100-3100 FT AGL INCREASING TO 6300-7300 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 12 TO 16 MPH.
SMOKE DISPERSAL.....POOR (29500 KNOT-FT) INCREASING TO GOOD (85600
                    KNOT-FT) BY THE AFTERNOON.

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

$$

FORECASTER...LYNOTT
REQUESTED BY...USFS
REASON FOR REQUEST...PRESCRIBED
.TAG 20120816.BUTTE.01/RIW