FNUS75 KRIW 290021 RRA
FWSRIW

SPOT FORECAST FOR NORTH FORK...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
630 AM MDT SAT AUG 28 2010

FORECAST IS BASED ON REQUEST TIME OF 2044 MDT ON AUGUST 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A MOIST AND UNSTABLE SW FLOW WILL CONTINUE TO FEED
OVER THE FIRE AREA AHEAD OF A SLOW-MOVING COLD FRONT ACROSS
IDAHO. RADAR SHOWED SCATTERED SHOWERS AND A FEW THUNDERSTORMS IN
THE VICINITY AND UPSTREAM OF THE FIRE THAT WILL MOSTLY CLEAR THE
AREA BY 0800L. A BREAK WILL FOLLOW THE REST OF THE MORNING WITH
ISOLATED SHOWERS AND THUNDERSTORMS REDEVELOPING THIS AFTERNOON AND
BECOMING MORE NUMEROUS TOWARD EVENING. THE FUELS WILL START OUT
WET WITH SHF4 RAWS SHOWING 0.28 INCHES OF RAINFALL SINCE YESTERDAY
AFTERNOON. A DRIER AIRMASS WILL PUSH IN BRIEFLY AFTER MIDNIGHT
TONIGHT WITH THE COLD FRONT PUSHING THROUGH AND BRINGING ANOTHER
ROUND OF SHOWERS AND THUNDERSTORMS MAINLY SUNDAY AFTERNOON AND
SUNDAY EVENING WITH RAIN SHOWERS MIXED WITH SNOW AT TIMES MONDAY
AS A MUCH COLDER AIRMASS PUSHES IN. THUS...NOT MUCH CHANCE OF
FUELS DRYING OUT FOR ANY EXTENDED DURATION OVER THE NEXT FEW DAYS.


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

FORECASTER...MEUNIER

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) WITH SCATTERED
                    SHOWERS AND ISOLATED THUNDERSTORMS THROUGH
                    0800L...BECOMING PARTLY CLOUDY (30-40 PERCENT) THE
                    REST OF THE MORNING WITH ISOLATED SHOWERS...THEN
                    INCREASING CLOUDS WITH SCATTERED RAIN
                    SHOWERS AND ISOLATED THUNDERSTORMS DEVELOPING
                    IN THE AFTERNOON.
MAX TEMPERATURE.....65-68.
MIN HUMIDITY........35-40 PERCENT.
20 FOOT WINDS.......SOUTHWEST 8 TO 13 MPH WITH GUSTS 20 TO 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH THIS MORNING BECOMING
                    SOUTH SOUTHWEST AROUND 25 MPH IN THE AFTERNOON.
LAL.................2 UNTIL 1200...THEN 4.
CHC OF WETTING RAIN.20 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3000-4000 FT AGL INCREASING TO 6300-7300 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....GOOD (60900 KNOT-FT) INCREASING TO VERY GOOD
                    (117400 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (45-55 PERCENT). SCATTERED
                    SHOWERS AND THUNDERSTORMS IN THE EVENING...THEN
                    ISOLATED SHOWERS AFTER MIDNIGHT.
MIN TEMPERATURE.....43-46.
MAX HUMIDITY........68-71 PERCENT.
20 FOOT WINDS.......BREEZY. SOUTHWEST WINDS 8 TO 13 MPH WITH GUSTS
                    20 TO 25 MPH IN THE EVENING...INCREASING TO
                    20 TO 25 MPH WITH GUSTS TO AROUND 40 MPH AROUND
                    0300L. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTH SOUTHWEST 25 TO 30 MPH...WITH GUSTS TO NEAR
                    40 MPH AFTER 0300L.
LAL.................4 UNTIL 2400...THEN 2.
CHC OF WETTING RAIN.15 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4100-5100 FT AGL DECREASING TO 1200 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST 25 TO 30 MPH.
SMOKE DISPERSAL.....FAIR TO GOOD (52700-91300 KNOT-FT).

.SUNDAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). ISOLATED
                    SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....62-65.
MIN HUMIDITY........29-32 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 12 TO 18 MPH WITH GUSTS 30 TO 35 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTHWEST 25 TO 30 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.3 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4100-5100 FT AGL INCREASING TO 8800-9800 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH SOUTHWEST 40 MPH.
SMOKE DISPERSAL.....EXCELLENT (159900-283400 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.SUNDAY NIGHT...MOSTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS
IN THE EVENING...THEN ISOLATED SHOWERS AFTER MIDNIGHT. LOWS IN
THE UPPER 30S. SOUTHWEST WINDS AROUND 15 MPH.
.MONDAY...PARTLY CLOUDY WITH SCATTERED SHOWERS...ISOLATED
THUNDERSTORMS AND SNOW SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN
THE MID 50S. WEST WINDS AROUND 14 MPH.
.TUESDAY...MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE MID
50S. WEST WINDS AROUND 12 MPH.
.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS AROUND
60. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...CODY DISPATCH
REASON FOR REQUEST...WILDFIRE
.TAG 20100826.NORTH.02/RIW