FNUS75 KRIW 132043
FWSRIW

SPOT FORECAST FOR ALPINE LAKE...BIA WRA
NATIONAL WEATHER SERVICE RIVERTON WY
243 PM MDT THU SEP 13 2012

FORECAST IS BASED ON REQUEST TIME OF 1426 MDT ON SEPTEMBER 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...FIRE WEATHER WATCH IN EFFECT FROM 10 AM MORNING THROUGH
MIDNIGHT SATURDAY EVENING...

.DISCUSSION...EXPECT A CLEAR SKY TONIGHT WITH AREAS OF SMOKE DUE
TO POOR SMOKE DISPERSAL. HIGH PRESSURE WILL BEGIN TO MOVE EAST OF
THE AREA ON FRIDAY. AS HIGH PRESSURE MOVES AWAY THE ATMOSPHERE WILL
BECOME MORE UNSTABLE AND ALLOW FOR GREATER MIXING OF THE ATMOSPHERE
IN THE AFTERNOON. CONDITIONS WILL BECOME BREEZY IN THE AFTERNOON
WITH WESTERLY WIND GUSTS TO AROUND 25 MPH POSSIBLE. WINDS WILL
BECOME LESS GUSTY FRIDAY NIGHT BUT REMAIN AROUND 8 TO 16 MPH.
BREEZY AND DRY CONDITIONS WILL CONTINUE INTO SATURDAY AS WELL BEFORE
A COLD FRONT MOVES INTO THE AREA SUNDAY AFTERNOON.


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

FORECASTER...HATTINGS

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT). AREAS OF SMOKE.
MIN TEMPERATURE.....38-42.
MAX HUMIDITY........35-40 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-8 MPH BECOMING SOUTHWEST
                    5 TO 10 MPH LATE IN THE NIGHT.
RIDGE TOP WINDS.....EAST 6 TO 12 MPH SHIFTING TO THE SOUTHWEST IN
                    THE LATE EVENING AND OVERNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2500-3500 FT AGL.
TRANSPORT WINDS.....EAST 10 TO 15 MPH SHIFTING TO THE SOUTHWEST 12
                    TO 18 MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....POOR (23900-28000 KNOT-FT).

.FRIDAY...
SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT). AREAS OF SMOKE IN
                    THE MORNING.
MAX TEMPERATURE.....62-66.
MIN HUMIDITY........9-15 PERCENT.
20 FOOT WINDS.......WEST WINDS 6 TO 12 MPH IN THE MORNING INCREASING
                    TO 10 TO 20 MPH WITH GUSTS TO AROUND 25 MPH AFTER
                    1200. STRONGEST WINDS WILL BE AFTER 3 PM.
RIDGE TOP WINDS.....WEST 10 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2500-3500 FT AGL INCREASING TO 5400-6400 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 15 TO 25 MPH.
SMOKE DISPERSAL.....FAIR TO GOOD (43600-91300 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...CLEAR. LOWS IN THE MID 40S. WEST WINDS AROUND
15 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID
60S. WEST WINDS AROUND 16 MPH.
.SUNDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS...THUNDERSTORMS
AND SLIGHT CHANCE OF SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN
THE MID 50S. WINDS GENERALLY LESS THAN 10 MPH.
.MONDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER
50S. WINDS GENERALLY LESS THAN 10 MPH.
.TUESDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 50S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...HATTINGS
REQUESTED BY...MIKE HOSTETLER
REASON FOR REQUEST...WILDFIRE
.TAG 20120913.ALPIN.01/RIW