FNUS75 KRIW 301450
FWSRIW

SPOT FORECAST FOR ALPINE LAKE...BIA WRA
NATIONAL WEATHER SERVICE RIVERTON WY
850 AM MDT THU AUG 30 2012

FORECAST IS BASED ON REQUEST TIME OF 0824 MDT ON AUGUST 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A MOIST SOUTHWESTERLY MONSOONAL FLOW WILL REACH THE AREA TODAY AS
A RIDGE OF HIGH PRESSURE BUILDS WESTWARD ACROSS THE SOUTHERN U.S.
THIS WILL INCREASE THE CHANCE FOR SHOWERS AND THUNDERSTORMS IN THE
VICINITY OF THE FIRE. ISOLATED TO SCATTERED THUNDERSTORMS ARE
POSSIBLE THIS AFTERNOON AND EACH AFTERNOON FOR THE NEXT SEVERAL DAYS.

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

FORECASTER...BERC

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (70-80 PERCENT). ISOLATED TO
                    SCATTERED RAIN SHOWERS POSSIBLE THROUGH THE DAY.
                    SCATTERED THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....68-73.
MIN HUMIDITY........17-21 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 5 TO 10 MPH WITH GUSTS TO
                    AROUND 15 MPH BECOMING 10 TO 15 MPH WITH GUSTS
                    TO 25 MPH AFTER 1000. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS AFTER 1200.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH.
LAL.................1 UNTIL 1200...THEN 3.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......5500-6500 FT AGL INCREASING TO 8200-8700 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 28 TO 31 MPH.
SMOKE DISPERSAL.....VERY GOOD (147400 KNOT-FT) INCREASING TO
                    EXCELLENT (203700 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........51-54 PERCENT.
20 FOOT WINDS.......WEST WINDS AROUND 10 MPH BECOMING
                    DOWNSLOPE/DOWNVALLEY 4-7 MPH BY 2100...THEN
                    BECOMING SOUTHWEST 8 TO 11 MPH AFTER MIDNIGHT.
                    GUSTS UP TO 15 MPH INCREASING TO 20 MPH AROUND
                    0400. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE EVENING.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
LAL.................2 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......5800-6800 FT AGL DECREASING TO 3100-4000 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST 22 TO 28 MPH.
SMOKE DISPERSAL.....VERY GOOD (136000 KNOT-FT) DECREASING TO GOOD
                    (77600 KNOT-FT) AFTER MIDNIGHT.

.FRIDAY...
SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (70-80 PERCENT). SCATTERED RAIN
                    SHOWERS THROUGH THE DAY. SCATTERED
                    THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....71-74.
MIN HUMIDITY........20-23 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 11 TO 13 MPH WITH GUSTS TO
                    AROUND 25 MPH. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH.
LAL.................1 UNTIL 1200...THEN 3.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......4600-5600 FT AGL INCREASING TO 7000-7800 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 28 TO 30 MPH.
SMOKE DISPERSAL.....VERY GOOD (122400 KNOT-FT) INCREASING TO
                    EXCELLENT (181800 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS
IN THE EVENING...THEN ISOLATED SHOWERS AFTER MIDNIGHT. LOWS IN
THE UPPER 40S. SOUTHWEST WINDS AROUND 14 MPH.
.SATURDAY...MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 40S. HIGHS AROUND 70. SOUTHWEST WINDS AROUND
17 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS AROUND 70. WINDS
GENERALLY LESS THAN 10 MPH.
.LABOR DAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE
LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BERC
REQUESTED BY...CAL ANACKER
REASON FOR REQUEST...WILDFIRE
.TAG 20120830.ALPIN.01/RIW