FNUS75 KRIW 281200
FWSRIW

SPOT FORECAST FOR ALPINE LAKE...BIA
NATIONAL WEATHER SERVICE RIVERTON WY
600 AM MDT FRI SEP 28 2012

FORECAST IS BASED ON REQUEST TIME OF 1839 MDT ON SEPTEMBER 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...EXPECT A DRY MORNING. THEN SOME CLOUDS WILL FORM
THIS AFTERNOON ALONG WITH ISOLATED SHOWERS OR STORMS ALONG THE
EAST SLOPES OF THE WIND RIVER MOUNTAINS. THE SHOWERS LINGER
THROUGH SUNSET THEN END BY MIDNIGHT. ON SATURDAY A WEAK WEATHER
SYSTEM WILL PASS THROUGH WYOMING. THIS WILL BE A CHANCE OF SHOWERS
AND ISOLATED STORMS OVER THE WIND RIVER MOUNTAINS DURING THE
AFTERNOON AND EVENING HOURS. THE SHOWERS WILL END AFTER MIDNIGHT
SATURDAY NIGHT. SUNDAY AND MONDAY LOOK DRY WITH WARMER TEMPERATURES.


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

FORECASTER...AR

.TODAY...
SKY/WEATHER.........MORNING SUNSHINE. THEN INCREASING CLOUDS
                    IN THE AFTERNOON. ISOLATED RAIN SHOWERS AND
                    ISOLATED THUNDERSTORMS IN THE AFTERNOON.

MAX TEMPERATURE.....52-57 AT 10000 FEET.
                    67-72 AT 6500 FEET.

MIN HUMIDITY........33-38 PERCENT AT 10000 FEET.
                    25-30 PERCENT AT 6500 FEET.

20 FOOT WINDS.......UPSLOPE/UPVALLEY AT 5 TO 10 MPH.

                    GUSTY AND ERRATIC WINDS TO 20 MPH
                    EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.

RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH.
                    WIND GUSTS TO 25 MPH NEAR STORMS.

LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.9 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.
SMOKE DISPERSAL.....BECOMING FAIR BY 1200...THEN GOOD BY 1400.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS
                    IN THE EVENING. PARTLY CLOUDY AFTER MIDNIGHT.

MIN TEMPERATURE.....36-41 AT 10000 FEET.
                    42-47 AT 6500 FEET.

MAX HUMIDITY........75-80 PERCENT AT 10000 FEET.
                    65-70 PERCENT AT 6500 FEET.

20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY AT 4 TO 7 MPH AFTER SUNSET.
                    WIND GUSTS TO 15 MPH NEAR SHOWERS OR STORMS.

RIDGE TOP WINDS.....WEST TO NORTHWEST AT 10 TO 15 MPH.

LAL.................2 UNTIL 2100...THEN 1.
CHC OF WETTING RAIN.4 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 1000-2000 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST TO NORTHWEST AT 10 TO 15 MPH.
SMOKE DISPERSAL.....DECREASING TO FAIR AFTER SUNSET...THEN TO POOR
                    AROUND MIDNIGHT.

.SATURDAY...
SKY/WEATHER.........MOSTLY CLOUDY. ISOLATED RAIN SHOWERS IN THE
                    MORNING...THEN SCATTERED SHOWERS AND ISOLATED
                    THUNDERSTORMS IN THE AFTERNOON.

MAX TEMPERATURE.....48-53 AT 10000 FEET.
                    60-64 AT 6500 FEET.

MIN HUMIDITY........40-45 AT 10000 FEET.
                    30-35 PERCENT AT 6500 FEET.

20 FOOT WINDS.......WEST WIND AT 5 TO 10 MPH.

                    GUSTY AND ERRATIC WINDS TO 20 MPH EXPECTED
                    NEAR STORMS IN THE AFTERNOON.

RIDGE TOP WINDS.....WEST TO NORTHWEST 15 TO 20 MPH WITH GUSTS
                    TO 25 MPH.

LAL.................1 UNTIL 1200...THEN 3.
CHC OF WETTING RAIN.13 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.....WEST AT 10 TO 15 MPH IN THE MORNING.
                    NORTHWEST AT 15 TO 20 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....BECOMING FAIR BY 1100...THEN GOOD BY 1400.

.FORECAST DAYS 3 THROUGH 5...

.SATURDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING. LOWS IN THE LOWER 40S.
WINDS GENERALLY LESS THAN 10 MPH.

.SUNDAY...MOSTLY SUNNY. HIGHS 50 TO 55 HIGHER ELEVATIONS.
HIGHS 60 TO 65 LOWER ELEVATIONS.
WINDS GENERALLY LESS THAN 10 MPH.

.MONDAY...CLEAR. LOWS IN THE 40S. HIGHS IN THE MID TO UPPER 50S
HIGHER ELEVATIONS.  HIGHS IN THE MID TO UPPER 60S LOWER ELEVATIONS.
WINDS GENERALLY LESS THAN 10 MPH.

.TUESDAY...MOSTLY CLEAR. LOWS IN THE 40S. HIGHS 55 TO 60 HIGHER
ELEVATIONS.  HIGHS 65-70 LOWER ELEVATIONS. WEST WINDS 10 TO 15 MPH
IN THE AFTERNOON LOWER ELEVATIONS...WEST WINDS AROUND 20 MPH
HIGHER ELEVATIONS.

$$

FORECASTER...ROSS
REQUESTED BY...CAL ANACKER
REASON FOR REQUEST...WILDFIRE
.TAG 20120927.ALPIN.01/RIW