FNUS75 KRIW 221213
FWSRIW

SPOT FORECAST FOR ALPINE LAKE...BIA
NATIONAL WEATHER SERVICE RIVERTON WY
613 AM MDT SAT SEP 22 2012

FORECAST IS BASED ON REQUEST TIME OF 2026 MDT ON SEPTEMBER 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE CONTINUES OVER THE AREA THIS WEEKEND.
GENERALLY LIGHT WINDS AND A MOSTLY CLEAR SKY WILL RESULT.
TERRAIN DRIVEN WINDS WILL INCREASE BY SUNDAY AFTERNOON. THIS
IS IN RESPONSE TO LOW PRESSURE DEVELOPING OVER THE PACIFIC
NORTHWEST. THIS LOW PRESSURE WILL MOVE TOWARDS THE ROCKIES ON
MONDAY...INCREASING THE CHANCES FOR PRECIPITATION. EVEN A
THUNDERSTORM OR TWO IS POSSIBLE MONDAY AFTERNOON.


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

FORECASTER...LYNOTT

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT). AREAS OF SMOKE.
MAX TEMPERATURE.....65-69.
MIN HUMIDITY........14-18 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2000-3000 FT AGL INCREASING TO 6200-7200 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 10 TO 13 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (19600-57100 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). AREAS OF SMOKE.
MIN TEMPERATURE.....40-45.
MAX HUMIDITY........34-40 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-8 MPH.
RIDGE TOP WINDS.....SOUTHWEST 5 TO 10 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6200-7200 FT AGL DECREASING TO 1900-2900 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST 8 TO 12 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (14700-52900 KNOT-FT).

.SUNDAY...
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (40-50 PERCENT). AREAS OF SMOKE.
MAX TEMPERATURE.....64-68.
MIN HUMIDITY........13-17 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 10 MPH...GUSTING TO 18 MPH
                    BY AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2100-3100 FT AGL INCREASING TO 6700-7700 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH TO SOUTHWEST 10 TO 14 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (23000-57300 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.SUNDAY NIGHT...PARTLY CLOUDY. LOWS IN THE LOWER 40S. WINDS
GENERALLY LESS THAN 10 MPH.
.MONDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 50S
TO LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.TUESDAY...COOLER. CLOUDY WITH CHANCE OF RAIN AND SNOW. LOWS
AROUND 40. HIGHS IN THE UPPER 40S. WINDS GENERALLY LESS THAN
10 MPH.
.WEDNESDAY...MOSTLY CLOUDY. CHANCE OF RAIN. LOWS IN THE LOWER
40S. HIGHS IN THE UPPER 40S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LYNOTT
REQUESTED BY...BEAU KIDD
REASON FOR REQUEST...WILDFIRE
.TAG 20120921.ALPIN.01/RIW