FNUS75 KRIW 051323
FWSRIW

SPOT FORECAST FOR ALPINE LAKE...BIA WRA
NATIONAL WEATHER SERVICE RIVERTON WY
723 AM MDT WED SEP 5 2012

FORECAST IS BASED ON REQUEST TIME OF 0634 MDT ON SEPTEMBER 05.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THURSDAY...

.DISCUSSION...

A VERY DRY AND GUSTY WESTERLY FLOW WILL REMAIN OVER THE AREA THROUGH
THURSDAY. TEMPERATURES AND RELATIVE HUMIDITY TODAY WILL SHOW LITTLE IF
ANY TREND FROM TUESDAY. HUMIDITY RECOVERY TONIGHT WILL BE VERY POOR.
WINDS WILL REMAIN GUSTY ON THURSDAY AHEAD OF A COLD FRONT...BUT
CLOUD COVER WILL INCREASE RESULTING IN SLIGHTLY COOLER TEMPERATURES
AND SLIGHTLY HIGHER RELATIVE HUMIDITY. ISOLATED SHOWERS AND THUNDERSTORMS
ARE POSSIBLE THURSDAY AFTERNOON INTO THURSDAY NIGHT. THE COLD FRONT
WILL MOVE THROUGH THURSDAY NIGHT FOLLOWED BY A MUCH COOLER NORTHERLY
FLOW ON FRIDAY.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........SUNNY (10 PERCENT).
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........13-17 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 10 TO 15 MPH...BECOMING WEST
                    TO SOUTHWEST 15 TO 25 MPH BY AROUND NOON.
                    GUSTS TO 35 MPH IN THE AFTERNOON. HIGHER
                    WINDS NEAR THE NORTH ZONE PORTABLE RAWS.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH INCREASING TO AROUND 30 MPH
                    LATE IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1900 FT AGL INCREASING TO 6500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 25 TO 35 MPH.
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT BY AFTERNOON.

.TONIGHT...
SKY/WEATHER.........CLEAR (0-5 PERCENT).
MIN TEMPERATURE.....42-47.
MAX HUMIDITY........AROUND 30 PERCENT.
20 FOOT WINDS.......WEST WINDS 10 TO 20 MPH. GUSTS TO AROUND 30
                    MPH.
RIDGE TOP WINDS.....WEST AROUND 30 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......6200 FT AGL DECREASING TO 2500 FT BY 10 PM.
TRANSPORT WINDS.....WEST AROUND 30 MPH.
SMOKE DISPERSAL.....EXCELLENT DECREASING TO GOOD BY 10 PM.

.THURSDAY...
SKY/WEATHER.........MOSTLY SUNNY (15 PERCENT)...BECOMING MOSTLY
                    CLOUDY (70 PERCENT) WITH ISOLATED RAIN SHOWERS
                    AND THUNDERSTORMS POSSIBLE IN THE AFTERNOON.
MAX TEMPERATURE.....50-55.
MIN HUMIDITY........AROUND 20 PERCENT.
20 FOOT WINDS.......WEST WINDS 15 TO 25 MPH. GUSTS TO AROUND 35 MPH.
RIDGE TOP WINDS.....WEST 20 TO 30 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.2 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2500 FT AGL INCREASING TO 6800 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 20 TO 30 MPH.
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT BY AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...

.THURSDAY NIGHT...MOSTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING...THEN ISOLATED SHOWERS AND SNOW
SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER 30S. WINDS GENERALLY
LESS THAN 10 MPH.

.FRIDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS. LOWS IN THE UPPER
30S. HIGHS 45-50. WINDS GENERALLY LESS THAN 10 MPH.

.SATURDAY...MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE
UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH.

.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS AROUND 60. WEST WINDS
10 TO 20 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...CAL ANACKER
REASON FOR REQUEST...WILDFIRE
.TAG 20120905.ALPIN.01/RIW