FNUS75 KRIW 161058
FWSRIW

SPOT FORECAST FOR ALPINE LAKE...BIA
NATIONAL WEATHER SERVICE RIVERTON WY
458 AM MDT SUN SEP 16 2012

FORECAST IS BASED ON REQUEST TIME OF 2318 MDT ON SEPTEMBER 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A WEATHER SYSTEM WILL MOVE THROUGH THE FIRE THIS
AFTERNOON AND EVENING. BEST TIMING OF THE COLD FRONT THROUGH THE
FIRE AREA WOULD BE BETWEEN 1500 AND 1700. THE WIND WILL CHANGE TO
NORTH NORTHEAST AS THE COLD AIR DEEPENS AND MAKES IT UP TO 9000
10000 FEET MSL. WIND MAY BE GUSTY FOR A FEW HOURS BEHIND THE FRONT
BUT SPEEDS WILL BE LOWER BY SUNSET. RELATIVE HUMIDITY WILL RISE
AND TEMPERATURES WILL COOL. SLIGHT CHANCE OF RAIN SHOWERS AROUND
1500 THROUGH 2400 THIS EVENING...SNOW SHOWERS DOWN TO 10000 FEET
AFTER SUNSET. MONDAY WILL HAVE DECREASING CLOUDS IN THE MORNING
WITH A MOSTLY SUNNY AFTERNOON. COOLER HIGH TEMPS AND HIGHER RH.
WIND WILL INCREASE IN THE AFTERNOON FROM THE NORTH TO NORTHWEST
DUE TO AFTERNOON MIXING.

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

FORECASTER...AR

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY THIS MORNING. INCREASING CLOUDS
                    AFTER 1200 AND BECOMING MOSTLY CLOUDY BY 1500.
                    SLIGHT CHANCE OF SHOWERS FROM 1500 TO 1800.

MAX TEMPERATURE.....55-60.
MIN HUMIDITY........20-25 PERCENT...INCREASING RH VALUES AFTER 1500.

20 FOOT WINDS.......WEST AT 6 TO 10 MPH UNTIL 1300.
                    WEST TO NORTHWEST AT 6 TO 10 MPH WITH GUSTS
                    TO 15 MPH AFTER 1300.
                    WIND SHIFTING TO NORTH TO NORTHWEST BETWEEN
                    1500 AND 1700 AT 7 TO 11 MPH WITH GUSTS TO 15 MPH.

10000-11000 FT RIDGE TOP WINDS.....WEST TO NORTHWEST AT 20 TO 25 MPH
                    WITH GUSTS 30 TO 40 MPH. WIND SHIFTING TO THE
                    NORTH NORTHWEST AT 15 TO 20 MPH WITH GUSTS TO
                    30 MPH BETWEEN 1600 AND 1800.

LAL.................1.
CHC OF WETTING RAIN.7 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 8000-9000 FT AGL BY AFTERNOON.
TRANSPORT WINDS.....WEST TO NORTHWEST AT 25 TO 30 MPH.
                    WIND BECOMING NORTHWEST AT 25 MPH AFTER 1600.
SMOKE DISPERSAL.....VERY GOOD TO EXCELLENT.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY WITH A CHANCE OF RAIN SHOWERS
                    UNTIL MIDNIGHT.
                    SNOW LEVEL LOWERING TO 10000 FEET BY 2100.
MIN TEMPERATURE.....32-36.
MAX HUMIDITY........80-85 PERCENT.

20 FOOT WINDS.......NORTH TO NORTHEAST AT 5 TO 9 MPH UNTIL 2100.
                    THEN BECOMING SOUTHEAST ST 5 TO 9 MPH AFTER
                    2100.
                    WIND BECOMING DOWNSLOPE/DOWNVALLEY AT 4 TO 7 MPH
                    AFTER 0300.

10000-11000 FT RIDGE TOP WINDS.....NORTH TO NORTHEAST AT 10 TO 15 MPH
                    UNTIL 2100...THEN SHIFTING TO THE SOUTH TO SOUTHEAST
                    AT 10 TO 15 MPH AFTER 2100...THEN SHIFTING TO THE
                    SOUTHWEST AT 10 TO 15 MPH AFTER 0300.

LAL.................1.
CHC OF WETTING RAIN.7 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 700-1200 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTH TO NORTHEAST AT 10 TO 15 MPH UNTIL 2100.
                    THEN SOUTH TO SOUTHEAST AT 10 TO 15 MPH UNTIL 0300.
                    THEN SOUTHWEST AT 10 TO 15 MPH AFTER 0300.
SMOKE DISPERSAL.....FAIR...BECOMING POOR BY MIDNIGHT.

.MONDAY...
SKY/WEATHER.........DECREASING CLOUDS IN THE MORNING.
                    MOSTLY SUNNY AFTER 1200.
MAX TEMPERATURE.....50-55.
MIN HUMIDITY........29-33 PERCENT.

20 FOOT WINDS.......VARIABLE AT 4 TO 7 MPH UNTIL 1200.
                    WEST AT 5 TO 8 MPH AFTER 1200.

10000-11000 FT RIDGE TOP WINDS.....WEST TO NORTHWEST AT 10 TO 15 MPH
                    WITH GUSTS TO 20 MPH UNTIL 1200.
                    NORTHWEST AT 17 TO 23 MPH AFTER 1200 WITH GUSTS
                    FROM 25 TO 30 MPH AFTER 1200.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 5000-6000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH UNTIL 1200.
                    NORTHWEST AROUND 25 MPH AFTER 1200.
SMOKE DISPERSAL.....BECOMING GOOD BY 1200...THEN BECOMING VERY GOOD
                    BY 1400.

.FORECAST DAYS 3 THROUGH 5...

.MONDAY NIGHT...CLEAR. LOWS IN THE 30S.
WINDS GENERALLY LESS THAN 10 MPH VALLEYS.
RIDGE TOP WINDS...NORTHWEST AT 15 TO 20 MPH.

.TUESDAY...CLEAR. HIGHS 55 TO 60.
WINDS GENERALLY LESS THAN 10 MPH VALLEYS.
RIDGE TOP WINDS...NORTHWEST 15 TO 20 MPH.

.WEDNESDAY...MOSTLY CLEAR. LOWS 36 TO 41. HIGHS AROUND 60.
WINDS GENERALLY LESS THAN 10 MPH.

.THURSDAY...MOSTLY CLEAR. LOWS IN THE 30S. HIGHS 55 TO 60.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...ROSS
REQUESTED BY...MIKE
REASON FOR REQUEST...WILDFIRE
.TAG 20120915.ALPIN.02/RIW