FNUS75 KRIW 091102
FWSRIW

SPOT FORECAST FOR RED ROCK...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
502 AM MDT FRI SEP 9 2011

FORECAST IS BASED ON REQUEST TIME OF 2049 MDT ON SEPTEMBER 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...UPPER HIGH PRESSURE OVER THE NORTHERN PLAINS WILL
DRIFT SOUTH AND WEAKEN TODAY AND TOMORROW. A DRIER AND SLIGHTLY
WARMER AIRMASS WILL BE OVER THE AREA TODAY WITH A SIMILAR EASTERLY
SURFACE FLOW AS ON THURSDAY. NO SHOWERS/THUNDERSTORMS AND
THEIR ASSOCIATED CONVECTIVE OUTFLOWS ARE EXPECTED TO CONTAMINATE
THIS EASTERLY FLOW TODAY. ON SATURDAY THE WIND FIELD WILL BE MORE
TERRAIN DRIVEN...UPSLOPE/UPVALLEY IN THE AFTERNOON. A SOUTHWEST
FLOW WILL BRING INCREASING CLOUDS AND CHANCES OF SHOWERS AND
ISOLATED AFTERNOON THUNDERSTORMS ON SUNDAY AND MONDAY.

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

FORECASTER...MEUNIER

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).

MAX TEMPERATURE.....67-70 NEAR 8000 FEET. 72-75 ON VALLEY FLOOR.
MIN HUMIDITY........23-26 PERCENT.

20 FOOT WINDS.......EAST 6 TO 12 MPH.
RIDGE TOP WINDS.....EAST AROUND 10 MPH.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......BELOW 1000 FT AGL THROUGH 0900...INCREASING TO
                    7700-8700 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....EAST AROUND 10 MPH.
SMOKE DISPERSAL.....POOR INCREASING TO GOOD IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).

MIN TEMPERATURE.....36-39.
MAX HUMIDITY........74-77 PERCENT.

20 FOOT WINDS.......EAST 5 TO 10 MPH.
RIDGE TOP WINDS.....EAST AROUND 10 MPH.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

MIXING HEIGHT.......4900-5900 FT AGL DECREASING TO 200-700 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....EAST 10 MPH.
SMOKE DISPERSAL.....GOOD DECREASING TO POOR AFTER 2000.

.SATURDAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).

MAX TEMPERATURE.....67-70 NEAR 8000 FEET...72 TO 75 ON VALLEY FLOORS.
MIN HUMIDITY........22-25 PERCENT.

20 FOOT WINDS.......EAST TO NORTHEAST 4 TO 7 MPH...BECOMING UPSLOPE/UPVALLEY
                    5-9 MPH AFTER 0900.
RIDGE TOP WINDS.....EAST 5 TO 10 MPH BECOMING WEST AROUND 5 MPH IN THE AFTERNOON.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

MIXING HEIGHT.......LESS THAN 1000 FT AGL THROUGH 0900...INCREASING
                    TO 7300-8300 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST 4 TO 8 MPH.
SMOKE DISPERSAL.....POOR TO FAIR.

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 30S. WINDS
GENERALLY LESS THAN 10 MPH.

.SUNDAY...PARTLY CLOUDY WITH SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 60S. WINDS
GENERALLY LESS THAN 10 MPH.

.MONDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. WINDS
GENERALLY LESS THAN 10 MPH.

.TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE MID
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...JOHN FREEMAN
REASON FOR REQUEST...WILDFIRE
.TAG 20110908.REDRO.01/RIW