FNUS75 KRIW 161142
FWSRIW

SPOT FORECAST FOR LOWER GROS VENTRE RX...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
542 AM MDT THU SEP 16 2010

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON SEPTEMBER 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...DRY WEATHER WILL OCCUR TODAY THROUGH SATURDAY.
ISOLATED SHOWERS OR STORMS MAY OCCUR ON SUNDAY AFTERNOON AND
EVENING. THE NEXT ORGANIZED WEATHER SYSTEM MAY ARRIVE MONDAY
WITH A BETTER CHANCE OF RAIN AND STORMS. RELATIVE HUMIDITY WILL
BE LOW DURING THE AFTERNOON AND EARLY EVENING WITH LESS
RECOVERY ON THE RIDGE TOPS AT NIGHT. AN AFTERNOON BREEZE
WILL OCCUR THIS AFTERNOON AND AGAIN FRIDAY AND SATURDAY
AFTERNOON. SUNDAY LOOKS TO BE WINDY IN THE AFTERNOON.

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

FORECASTER...AR

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....70-75.
MIN HUMIDITY........15-20 PERCENT.

20 FOOT WINDS.......UPSLOPE/UPVALLEY OR EAST AT 4 TO 8 MPH IN THE MORNING.
                    SOUTH TO SOUTHWEST AT 9 TO 14 MPH WITH GUSTS
                    AROUND 20 MPH AFTER 1300.

RIDGE TOP WINDS.....SOUTH TO SOUTHWEST AT 5 TO 10 MPH IN THE MORNING.
                    SOUTH TO SOUTHWEST AT 14 TO 18 MPH WITH GUSTS
                    AROUND 25 MPH AFTER 1300.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 7000-8000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH IN THE MORNING.
                    WEST TO SOUTHWEST WIND 20 TO 25 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....BECOMING FAIR DURING THE MORNING...INCREASING TO
                    EXCELLENT AFTER 1300 IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....40-45.
MAX HUMIDITY........55-60 PERCENT.

20 FOOT WINDS.......SOUTH TO SOUTHWEST AT 8 TO 13 MPH UNTIL SUNSET...
                    THEN BECOMING SOUTH AT 3 TO 6 MPH BY MIDNIGHT.

RIDGE TOP WINDS.....SOUTH TO SOUTHWEST AT 10 TO 15 MPH WITH GUSTS
                    AROUND 20 MPH UNTIL SUNSET.
                    THEN SOUTH TO SOUTHWEST DECREASING TO 5 TO
                    10 MPH BY MIDNIGHT.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 500 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST TO SOUTHWEST AROUND 25 MPH UNTIL SUNSET...
                    BECOMING SOUTH TO SOUTHWEST AROUND 10 MPH BY
                    MIDNIGHT.
SMOKE DISPERSAL.....VERY GOOD UNTIL SUNSET...DECREASING TO POOR
                    BY MIDNIGHT.

.FRIDAY...
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....72-77.
MIN HUMIDITY........15-20 PERCENT.

20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST 11
                    TO 13 MPH WITH GUSTS TO AROUND 25 MPH IN THE
                    AFTERNOON.

RIDGE TOP WINDS.....SOUTH AROUND 15 MPH SHIFTING TO THE SOUTHWEST
                    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.......INCREASING TO 7000-8000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH TO SOUTHWEST AT 10 TO 15 MPH IN THE MORNING.
                    WEST TO SOUTHWEST AT 20 TO 25 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....BECOMING FAIR DURING THE MORNING...INCREASING TO
                    EXCELLENT IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...

.FRIDAY NIGHT...MOSTLY CLEAR. LOWS 40 TO 45. SOUTH TO SOUTHWEST
WINDS 10 TO 20 MPH UNTIL 8 PM...THEN DECREASING TO AROUND 10 MPH.

.SATURDAY...PARTLY CLOUDY. HIGHS IN THE 70S. SOUTH TO SOUTHWEST
WINDS 10 TO 20 MPH IN THE AFTERNOON.

.SUNDAY...PARTLY CLOUDY. SLIGHT CHANCE OF AFTERNOON SHOWERS. LOWS
IN THE 40S. HIGHS 65 TO 70. SOUTH TO SOUTHWEST WINDS 15 TO 25 MPH
IN THE AFTERNOON WITH HIGHER GUSTS.

.MONDAY...MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...ROSS
REQUESTED BY...MIKE JOHNSTON
REASON FOR REQUEST...PRESCRIBED
.TAG 20100916.LOWER.01/RIW