FNUS75 KRIW 041034
FWSRIW

SPOT FORECAST FOR ALPINE LAKE...BIA WRA
NATIONAL WEATHER SERVICE RIVERTON WY
434 AM MDT THU OCT 4 2012

FORECAST IS BASED ON REQUEST TIME OF 1855 MDT ON OCTOBER 03.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...COLD UPSLOPE CONDITIONS WILL REMAIN EAST OF THE
DIVIDE TODAY THROUGH FRIDAY. THE FRONT WILL RETREAT TO THE LOWER
SLOPES ON THE EAST END OF THE FIRE LATE THIS MORNING AND
AFTERNOON...GIVING WAY TO A WEST SOUTHWEST FLOW AND THINNING OF
CLOUD DECKS. AN UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE DIVIDE
THIS EVENING. UPSLOPE FLOW WILL DEEPEN AND CLOUDS/LIGHT SNOW WILL
INCREASE OVERNIGHT. 1 TO 3 INCHES OF SNOW IS POSSIBLE BY FRIDAY
MORNING. A SIMILAR SCENARIO WILL PLAY OUT ON FRIDAY WITH THE FRONT
BRIEFLY RETREATING DOWN THE EAST SLOPES FOLLOWED BY STRENGTHENING
UPSLOPE CONDITIONS WITH ANOTHER SHOT OF LIGHT SNOW POSSIBLE FRIDAY
EVENING.

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

FORECASTER...MEUNIER

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT) EARLY...BECOMING
                    PARTLY CLOUDY (50-60 PERCENT) AFTER 1000 (50-60 PERCENT).
MAX TEMPERATURE.....34-38 BELOW 8500 FEET...27-33 ABOVE 8500 FEET.
MIN HUMIDITY........41-49 PERCENT.

20 FOOT WINDS.......UPSLOPE/UPVALLEY OR EAST SOUTHEAST 5-9 MPH...GIVING
                    WAY TO WEST SOUTHWEST WIND 5-10 MPH WITH GUSTS TO
                    15 MPH ABOVE 8500 FEET IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTH 5 TO 10 MPH...BECOMING SOUTHWEST 10 TO 15 MPH
                    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.......2500-3500 FT AGL.
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH IN THE MORNING...BECOMING SOUTHWEST
                    10 TO 15 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (10000-33000 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........CLOUDY (90-100 PERCENT). LIGHT SNOW DEVELOPING IN THE
                    EVENING.  1 TO 3 INCHES OF NEW SNOWFALL OVERNIGHT.
MIN TEMPERATURE.....20-25.
MAX HUMIDITY........NEAR 90 PERCENT.

20 FOOT WINDS.......UPSLOPE OR EAST 5 TO 10 MPH WITH GUSTS TO 15 MPH.
RIDGE TOP WINDS.....EAST 5 TO 10 MPH.
LAL.................1.

CHC OF WETTING RAIN.60 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......2600-3600 FT AGL.
TRANSPORT WINDS.....EAST 5 TO 10 MPH.
SMOKE DISPERSAL.....POOR (13500-21400 KNOT-FT).

.FRIDAY...
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). OCCASIONAL LIGHT SNOW
                    OR FLURRIES.
MAX TEMPERATURE.....30-35 BELOW 8500 FEET...24-29 ABOVE 8500 FEET.
MIN HUMIDITY........58-65 PERCENT.

20 FOOT WINDS.......UPSLOPE/UPVALLEY OR EAST SOUTHEAST 5-9 MPH...GIVING
                    WAY TO WEST SOUTHWEST WIND 5-10 MPH ABOVE 9000
                    FEET IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST SOUTHWEST AROUND 10 MPH.

LAL.................1.
CHC OF WETTING RAIN.20 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......2400-3400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
SMOKE DISPERSAL.....POOR (10300-27200 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...CLOUDY. CHANCE OF SNOW IN THE EVENING...THEN
SLIGHT CHANCE OF SNOW AFTER MIDNIGHT. LOWS AROUND 18. WINDS
GENERALLY LESS THAN 10 MPH.

.SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS IN THE
LOWER 20S. HIGHS IN THE MID 30S. WINDS GENERALLY LESS THAN
10 MPH.

.SUNDAY...CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE MID 40S.
WINDS GENERALLY LESS THAN 10 MPH.

.COLUMBUS DAY...CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE LOWER
50S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...CAL ANACKER
REASON FOR REQUEST...WILDFIRE
.TAG 20121003.ALPIN.01/RIW