FNUS75 KRIW 171056
FWSRIW

SPOT FORECAST FOR NORTH BUFFALO...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
456 AM MDT MON SEP 17 2012

FORECAST IS BASED ON REQUEST TIME OF 2113 MDT ON SEPTEMBER 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
DRY NORTHWEST FLOW ALOFT TO PREVAIL THE NEXT SEVERAL DAYS. THERE WILL
BE AN INCREASE IN THE NORTHWEST FLOW OVER THE RIDGETOPS AND EXPOSED
LOCATIONS BY THIS EVENING CONTINUING INTO AT LEAST TUESDAY MORNING.
HIGHER LOW LEVEL MOISTURE LEVELS BROUGHT IN BEHIND A WEAK COLD FRONT
WILL GIVE WAY TO A GRADUALLY DRIER AIRMASS TUESDAY INTO WEDNESDAY.


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

FORECASTER...SKRBAC

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT).
MAX TEMPERATURE.....66 AT 7500 FEET AND 54-56 AT 10000 FEET.
MIN HUMIDITY........20-24 PERCENT...UP TO 30 PERCENT AT 10000 FEET.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING NORTHWEST
                    AROUND 10 MPH AND GUSTY LATE IN THE AFTERNOON.
RIDGE TOP WINDS.....NORTH AT 10 TO 15 MPH UNTIL 1000L THEN SHIFTING
                    TO THE NORTHWEST AT 15 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2800-3800 FT AGL INCREASING TO 5900-6900 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....NORTH 10 TO 15 MPH...SHIFTING TO THE NORTHWEST AT
                    15 TO 20 MPH AFTER 1000L.
SMOKE DISPERSAL.....FAIR (42100 KNOT-FT) INCREASING TO VERY GOOD (105000
                    KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....28-32 VALLEY FLOOR TO 34-38 ELSEWHERE.
MAX HUMIDITY........80-90 PERCENT VALLEY FLOOR WITH 40-50 PERCENT MID SLOPE.
20 FOOT WINDS.......NORTHWEST WINDS AROUND 8 TO 12 MPH EARLY
                    IN THE EVENING BECOMING DOWNSLOPE/DOWNVALLEY
                    4-7 MPH.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH DECREASING TO 5 TO 10 MPH
                    AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4000-5000 FT AGL DECREASING TO 1100-1600 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST 12 TO 16 MPH.
SMOKE DISPERSAL.....GOOD (65000 KNOT-FT) DECREASING TO POOR (20000
                    KNOT-FT) AFTER MIDNIGHT.

.TUESDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....71 AT 7500 FEET AND 59 TO 61 AT 10000 FEET.
MIN HUMIDITY........18-22 PERCENT...EXCEPT 24-27 PERCENT HIGHER ELEVATIONS.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST AROUND 10
                    MPH WITH GUSTS TO 15 MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH SHIFTING TO THE WEST
                    AT 12 TO 20 MPH IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1900-2900 FT AGL INCREASING TO 4400-5400 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 5 TO 8 MPH SHIFTING TO THE WEST 10
                    TO 16 MPH AFTER 1000L WITH GUSTS TO 20 MPH
                    AFTER 1400L.
SMOKE DISPERSAL.....POOR (14000 KNOT-FT) INCREASING TO GOOD (72800 KNOT-FT)
                    IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...CLEAR. AREAS OF SMOKE. LOWS IN THE UPPER 30S.
WINDS GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...CLEAR. AREAS OF SMOKE. LOWS IN THE UPPER 30S. HIGHS
IN THE UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...SKRBAC
REQUESTED BY...LOOKOUT
REASON FOR REQUEST...WILDFIRE
.TAG 20120916.NORTH.01/RIW