FNUS75 KRIW 241940
FWSRIW

SPOT FORECAST FOR NORTH FORK...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
140 PM MDT TUE AUG 24 2010

FORECAST IS BASED ON REQUEST TIME OF 1305 MDT ON AUGUST 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE OVER THE FIRE WILL KEEP DRY AND WARM CONDITIONS IN
PLACE OVER THE NEXT COUPLE OF DAYS. HUMIDITY IN THE AFTERNOONS
WILL LOWER OVER THE NEXT COUPLE OF DAYS...ESPECIALLY BY THURSDAY
WHEN VALUES IN THE LOW TO MID TEENS WILL BE PRESENT. WIND WILL
INCREASE OVER THE FIRE THIS EVENING...WITH ELEVATED WIND LINGERING
THROUGH THURSDAY AFTERNOON. AN APPROACHING TROUGH WILL BEGIN TO
IMPACT THE FIRE THURSDAY EVENING...WITH ISOLATED SHOWERS AND
THUNDERSTORMS POSSIBLE BY FRIDAY AFTERNOON.


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

FORECASTER...BRANHAM

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....41-44...SOME LOW TO MID 30S NEAR RIVER.
MAX HUMIDITY........47-52 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH BECOMING WEST 1O
                    TO 15 MPH WITH GUSTS TO AROUND 25 MPH AFTER
                    2100.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH INCREASING TO 20 TO 25 MPH
                    AFTER 0400.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 1000-1500 FT AGL BY 0200.
TRANSPORT WINDS.....SOUTHWEST 17 TO 25 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (25300-52000 KNOT-FT).

.WEDNESDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....71-74.
MIN HUMIDITY........12-15 PERCENT.
20 FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO AROUND 25
                    MPH DECREASING TO 7 TO 12 MPH AFTER 1200.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH SHIFTING TO THE SOUTHWEST 15
                    TO 20 MPH AFTER 1200.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 7400-8400 FT AGL AFTER 1300.
TRANSPORT WINDS.....SOUTHWEST 20 TO 26 MPH DECREASING TO 15 TO 20
                    MPH AFTER 1000.
SMOKE DISPERSAL.....FAIR (55000 KNOT-FT) INCREASING TO VERY GOOD
                    (135600 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 40S. WEST
WINDS AROUND 16 MPH.
.THURSDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE MID
70S. WEST WINDS AROUND 18 MPH.
.FRIDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S. SOUTHWEST WINDS
AROUND 18 MPH.
.SATURDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S.
SOUTHWEST WINDS AROUND 10 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...GALEN ROESLER
REASON FOR REQUEST...WILDFIRE
.TAG 20100823.NORTH.01/RIW