FNUS75 KRIW 170929
FWSRIW

SPOT FORECAST FOR NOWLIN...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
329 AM MDT SAT SEP 17 2011

FORECAST IS BASED ON REQUEST TIME OF 1751 MDT ON SEPTEMBER 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...AN UPPER TROUGH OF LOW PRESSURE WILL PUSH ACROSS
THE DIVIDE THIS MORNING. SCATTERED RAIN AND SNOW SHOWERS...SNOW
LEVELS AROUND 9500 FEET...WILL CONTINUE EARLY THIS MORNING AND
THEN RAPID DRYING AND INCREASING WESTERLY WIND WILL PUSH IN BEHIND
THE TROUGH AROUND 0900. ISOLATED SHOWERS OR THUNDERSTORMS MAY
DEVELOP BEHIND THE TROUGH THROUGH AROUND MID-AFTERNOON AND THEN A
MORE STABLE AIRMASS WILL PUSH IN LATE AFTERNOON. A DRY...STABLE
AND COOL WESTERLY FLOW WILL PREVAIL ON SUNDAY. A DRY COLD FRONT
WILL PUSH THROUGH MONDAY NIGHT WITH BREEZY TO WINDY AND WARMER
WEATHER EXPECTED AHEAD OF THE FRONT MONDAY.

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

FORECASTER...MEUNIER

.SATURDAY...
SKY/WEATHER.........MOSTLY CLOUDY THROUGH 0900 WITH SCATTERED RAIN AND SNOW
                    SHOWERS.  BECOMING PARTLY CLOUDY AFTERWARDS WITH ISOLATED
                    SHOWERS AND THUNDERSTORMS...THEN CLEARING AFTER 1500.
MAX TEMPERATURE.....53-56.
MIN HUMIDITY........29-32 PERCENT.
20 FOOT WINDS.......WEST WINDS 10 TO 15 MPH INCREASING
                    15 TO 20 MPH WITH GUSTS TO 30 MPH AFTER 0900.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST AROUND 25 MPH.
LAL.................1 UNTIL 1000...THEN 2.
CHC OF WETTING RAIN.20 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1000-2000 FT AGL THROUGH 0900 THEN INCREASING TO
                    4800-5800 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 20 MPH THROUGH 0900 INCREASING TO 25 TO 30 MPH
                    BY AFTERNOON.
SMOKE DISPERSAL.....FAIR THROUGH 09000...INCREASING TO EXCELLENT BY AFTERNOON.

.SATURDAY NIGHT...
SKY/WEATHER.........PARTLY CLOUDY.
MIN TEMPERATURE.....30-33.
MAX HUMIDITY........77-80 PERCENT.
20 FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS UP TO 30 MPH THROUGH
                    SUNSET...THEN BECOMING WEST SOUTHWEST AROUND 10 MPH.

RIDGE TOP WINDS.....WEST 20 TO 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4500-5500 FT AGL DECREASING TO 2200-3200 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
SMOKE DISPERSAL.....VERY GOOD DECREASING TO FAIR AFTER MIDNIGHT.

.SUNDAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT).
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........28-31 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST 10 TO 15
                    MPH WITH GUSTS TO AROUND 25 MPH IN THE
                    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........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2900-3900 FT AGL INCREASING TO 4900-5900 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 15 TO 20 MPH INCREASING TO AROUND 30 MPH
                    IN THE AFTERNOON.
SMOKE DISPERSAL.....FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.SUNDAY NIGHT...PARTLY CLOUDY. LOWS IN THE MID 30S. WEST WINDS
AROUND 10 MPH.

.MONDAY...PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS AROUND 60.
WEST WIND 15 TO 25 MPH IN THE AFTERNOON.

.TUESDAY...CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER 60S.
WINDS GENERALLY LESS THAN 10 MPH.

.WEDNESDAY...CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...ULF PETERS
REASON FOR REQUEST...WILDFIRE
.TAG 20110916.NOWLI.01/RIW