FNUS75 KRIW 120930
FWSRIW

SPOT FORECAST FOR GREEN...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
330 AM MDT MON AUG 12 2013

FORECAST IS BASED ON REQUEST TIME OF 2137 MDT ON AUGUST 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...TEMPERATURES WILL CONTINUE TO WARM A LITTLE TODAY WITH
FURTHER DECREASE IN DAYTIME HUMIDITY. ANOTHER SURGE IN MOISTURE MAY
INITIATE SOME SHOWER AND THUNDERSTORM ACTIVITY THIS AFTERNOON ACROSS THE
AREA...WITH GUSTY WIND AND LIGHTNING BEING THE PRIMARY THREATS. A
COOLER PATTERN LOOKS TO BE AHEAD ON TUESDAY...THOUGH SHOWER AND
THUNDERSTORM ACTIVITY IS EXPECTED TO INCREASE TUESDAY AFTERNOON.

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

FORECASTER...LIPSON

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (30-40 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS BY 1500 IN THE AFTERNOON.
MAX TEMPERATURE.....68 AT 9000 FEET AND 62 AT 10500 FEET.
MIN HUMIDITY........23 PERCENT AT 9000 FEET AND 27 PERCENT AT 10500 FEET.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH MAINLY FROM THE WEST.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......5900-6900 FT AGL INCREASING TO 11600-12500 FT
                    AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 10 TO 15 MPH.
SMOKE DISPERSAL.....GOOD (69900 KNOT-FT) INCREASING TO VERY GOOD
                    (124600 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....AROUND 38.
MAX HUMIDITY........58-61 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH MAINLY FROM THE NORTHEAST.
                    GUSTS UP TO 10 MPH AFTER MIDNIGHT. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE EVENING.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
LAL.................3 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......6400-7400 FT AGL DECREASING TO 500-1300 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST AROUND 10 MPH SHIFTING TO THE SOUTH AROUND
                    9 MPH LATE IN THE EVENING...THEN SHIFTING TO
                    THE NORTHWEST AROUND 12 MPH AFTER MIDNIGHT
                    SHIFTING TO THE SOUTHWEST AROUND 10 MPH EARLY
                    IN THE MORNING.
SMOKE DISPERSAL.....GOOD (61400 KNOT-FT) DECREASING TO POOR (4400
                    KNOT-FT) AFTER MIDNIGHT.

.TUESDAY...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE MORNING...THEN
                    SCATTERED SHOWERS AND THUNDERSTORMS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....71 AT 9000 FEET AND 65 AT 10500 FEET.
MIN HUMIDITY........23 PERCENT AT 9000 FEET AND 30 PERCENT AT 10500 FEET.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH MAINLY FROM THE WEST.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH SHIFTING TO THE WEST LATE
                    IN THE MORNING...THEN SHIFTING TO THE SOUTHWEST
                    EARLY IN THE AFTERNOON SHIFTING TO THE NORTH
                    LATE IN THE AFTERNOON.
LAL.................3 UNTIL 1200...THEN 4.
CHC OF WETTING RAIN.14 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3200-4200 FT AGL INCREASING TO 6800-7400 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 9 MPH SHIFTING TO THE NORTHWEST 12
                    TO 13 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR TO GOOD (30800-62900 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. WINDS GENERALLY LESS THAN
10 MPH.
.WEDNESDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S. WINDS
GENERALLY LESS THAN 10 MPH.
.THURSDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER
70S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER
70S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...ROD DYKEHOUSE
REASON FOR REQUEST...WILDFIRE
.TAG 20130811.GREEN.01/RIW