FNUS75 KRIW 011431
FWSRIW

SPOT FORECAST FOR SOUTH FORK...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
831 AM MDT THU JUL 1 2010

FORECAST IS BASED ON REQUEST TIME OF 0815 MDT ON JULY 01.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

WARM...DRY AND BREEZY CONDITIONS WILL PERSIST TODAY AND FRIDAY...WITH
ISOLATED THUNDERSTORMS WITH VERY STRONG GUSTY WINDS.  OUTFLOW WIND
GUSTS TO 50 MPH AND OCCASIONAL TO FREQUENT LIGHTNING WILL BE THE
PRIMARY THUNDERSTORM THREATS.  WEST TO SOUTHWEST WINDS WILL LIKELY
INCREASE TODAY AND FRIDAY AS A PACIFIC TROUGH APPROACHES.  THE TROUGH
WILL MOVE THROUGH FRIDAY EVENING...WITH COOLER TEMPERATURES FRIDAY
NIGHT AND SATURDAY...ALONG WITH A CHANCE OF SHOWERS AND THUNDERSTORMS.

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

FORECASTER...C.BAKER

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS.
MAX TEMPERATURE.....75-77.
MIN HUMIDITY........21-24 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 12 TO 17 MPH. GUSTS UP TO 20
                    MPH INCREASING TO 22 MPH WITH GUSTS TO 30 MPH
                    IN THE AFTERNOON.  GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTH 15 TO 20 MPH SHIFTING TO THE SOUTHWEST
                    AROUND 25 MPH LATE IN THE AFTERNOON.
LAL.................3.
CWR.................10 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......7600-8600 FT AGL INCREASING TO 14400 FT AGL IN
                    THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 20 TO 28 MPH.
SMOKE DISPERSAL.....VERY GOOD (111800 KNOT-FT) INCREASING TO
                    EXCELLENT (248500 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....45-48.
MAX HUMIDITY........70-75 PERCENT.
WIND (20 FT)........SOUTH WINDS 9 TO 15 MPH. GUSTS UP TO 25 MPH
                    DECREASING TO 6 MPH IN THE LATE EVENING AND
                    OVERNIGHT. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS IN THE EVENING.
RIDGE TOP WINDS.....SOUTH 15 TO 20 MPH DECREASING TO 8 MPH BY LATE
                    EVENING.
LAL.................2 UNTIL 2400...THEN 1.
CWR.................10 PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......6900-7900 FT AGL DECREASING TO 800 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....SOUTH 17 TO 24 MPH.
SMOKE DISPERSAL.....EXCELLENT (171600 KNOT-FT) DECREASING TO POOR
                    (22400 KNOT-FT) AFTER MIDNIGHT.

.FRIDAY...
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (25-35 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....AROUND 73.
MIN HUMIDITY........22-24 PERCENT.
WIND (20 FT)........SOUTH WINDS 11 TO 18 MPH SHIFTING TO THE
                    SOUTHWEST AROUND 21 MPH LATE IN THE AFTERNOON.
                    GUSTS UP TO 20 MPH INCREASING TO 35 MPH IN THE
                    AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTH 15 TO 20 MPH INCREASING TO SOUTHWEST 25
                    TO 30 MPH IN THE AFTERNOON.
LAL.................1 UNTIL 1200...THEN 2.
CWR.................LESS THAN 5 PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......6200-7200 FT AGL INCREASING TO 11700-12700 FT
                    AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 20 TO 29 MPH SHIFTING TO THE SOUTHWEST
                    AROUND 32 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....VERY GOOD (123400 KNOT-FT) INCREASING TO
                    EXCELLENT (305600 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS
IN THE EVENING. LOWS IN THE LOWER 40S. WEST WINDS AROUND 12 MPH.
.SATURDAY...COOLER. PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER 50S.
WINDS GENERALLY LESS THAN 10 MPH.
.INDEPENDENCE DAY...MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE
LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.MONDAY...PARTLY CLOUDY. LOWS AROUND 40. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...C.BAKER
REQUESTED BY...HAYWARD
REASON FOR REQUEST...WILDFIRE
.TAG 20100701.SOUTH.01/RIW