FNUS75 KRIW 042000
FWSRIW

SPOT FORECAST FOR BUTTE CREEK...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
200 PM MDT TUE SEP 4 2012

FORECAST IS BASED ON REQUEST TIME OF 1347 MDT ON SEPTEMBER 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

DRY WESTERLY FLOW WILL CONTINUE ACROSS THE REGION THROUGH THURSDAY
EVENING WHEN A STRONG COLD FRONT DROPS SOUTH OUT OF MONTANA. THERE
WILL BE VERY LITTLE TREND IN HUMIDITY OR IN TEMPERATURES THROUGH
THURSDAY AS WELL...WITH NEAR CRITICAL TO MARGINALLY CRITICAL WINDS
AND HUMIDITY POSSIBLE EACH AFTERNOON. THE FRONT IS EXPECTED TO
PASS THROUGH THE FIRE AREA AT ABOUT 1800 ON THURSDAY WITH A
DRAMATIC RISE IN HUMIDITY...PUSHING RHS WELL INTO THE 80S
OVERNIGHT ON THURSDAY...WITH A 20 DEGREE DROP IN TEMPERATURES AT
THE SAME TIME...WITH A SLIGHT CHANCE OF A RAIN AND SNOW MIX OVERNIGHT.

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

FORECASTER...ALLEN

.REST OF TODAY...
SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....60-63.
MIN HUMIDITY........16-19 PERCENT.
20 FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25
                    MPH.
RIDGE TOP WINDS.....WEST AROUND 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........47-50 PERCENT.
20 FOOT WINDS.......WEST WINDS 6 TO 15 MPH WITH GUSTS TO AROUND 25
                    MPH UNTIL EARLY MORNING BECOMING
                    DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.WEDNESDAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....61-64.
MIN HUMIDITY........15-18 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST 10 TO 16
                    MPH WITH GUSTS TO AROUND 30 MPH IN THE LATE
                    MORNING AND AFTERNOON.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH INCREASING TO AROUND 25 MPH
                    LATE IN THE AFTERNOON.
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...
.WEDNESDAY NIGHT...CLEAR. LOWS IN THE UPPER 30S. WEST WINDS
AROUND 14 MPH.
.THURSDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE LOWER 30S. HIGHS AROUND 60. WEST WINDS
AROUND 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS AROUND 60.
WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...ALLEN
REQUESTED BY...BUTTE CREEK IC
REASON FOR REQUEST...WILDFIRE
.TAG 20120904.BUTTE.01/RIW