FNUS75 KRIW 101454
FWSRIW

SPOT FORECAST FOR WASHAKIE PILES - DICKINSON PARK...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
854 AM MDT WED OCT 10 2012

FORECAST IS BASED ON IGNITION TIME OF 0850 MDT ON OCTOBER 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WIND WILL INCREASE THROUGH THE DAY TODAY AS THE PRESSURE
GRADIENT TIGHTEN AS AN UPPER LEVEL DISTURBANCE DROPS SOUTHWARD OUT OF
CANADA TODAY. WIND GUSTS NEAR 40 MPH ARE POSSIBLE THIS AFTERNOON AND
TONIGHT. AS THE SHORT WAVE MOVES AWAY ON THURSDAY THE PRESSURE GRADIENT
WILL WEAKEN AND WINDS SHOULD BECOME SOMEWHAT LIGHTER THROUGH THE DAY
ON THURSDAY ALTHOUGH WINDS COULD STILL BE GUSTY DURING THE MORNING HOURS.
EXPECT DRY CONDITIONS THROUGH THURSDAY NIGHT WITH DRY WEST TO
NORTHWESTERLY FLOW. AN UPPER LEVEL LOW WILL APPROACH LATER FRIDAY
AND BRING A CHANCE OF SHOWERS.

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

FORECASTER...HATTINGS

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....52-56.
MIN HUMIDITY........20-25 PERCENT.
20 FOOT WINDS.......WEST WINDS 15 TO 25 MPH. GUSTS UP TO 30 MPH
                    INCREASING TO 40 MPH AFTER 1200.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH INCREASING TO 30 TO 35 MPH
                    AFTER 1200.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1300-2300 FT AGL INCREASING TO 4200-5200 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 30 TO 35 MPH.
SMOKE DISPERSAL.....FAIR (52100 KNOT-FT) INCREASING TO VERY GOOD
                    (131400 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
MIN TEMPERATURE.....34-38.
MAX HUMIDITY........45-50 PERCENT.
20 FOOT WINDS.......WEST WINDS 15 TO 20 MPH WITH GUSTS TO AROUND 35
                    MPH.
RIDGE TOP WINDS.....WEST 25 TO 30 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3700-4700 FT AGL DECREASING TO 1300-1800 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....WEST 25 TO 30 MPH.
SMOKE DISPERSAL.....VERY GOOD (111200 KNOT-FT) DECREASING TO POOR
                    (39100 KNOT-FT) AFTER MIDNIGHT.

.THURSDAY...
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MAX TEMPERATURE.....54-58.
MIN HUMIDITY........30-35 PERCENT.
20 FOOT WINDS.......WEST WINDS 15 TO 20 MPH DECREASING TO 10 TO 15 MPH
                    AFTER 1200. GUSTS UP TO 30 MPH DECREASING TO 20 MPH
                    AFTER 1200.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH DECREASING TO 10 TO 20 MPH
                    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.......2600-3600 FT AGL INCREASING TO 5400-6400 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 20 TO 30 MPH.
SMOKE DISPERSAL.....GOOD (62900-97500 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 30S. SOUTHWEST
WINDS AROUND 10 MPH.
.FRIDAY...MOSTLY CLOUDY. CHANCE OF SHOWERS AND SNOW SHOWERS. LOWS
IN THE MID 30S. HIGHS IN THE MID 50S. WINDS GENERALLY LESS THAN
10 MPH.
.SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE LOWER 30S. HIGHS AROUND 50. NORTHWEST WINDS
AROUND 13 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 40S. WEST
WINDS AROUND 14 MPH.

$$

FORECASTER...HATTINGS
REQUESTED BY...BRETT HELLER
REASON FOR REQUEST...PRESCRIBED
.TAG 20121011.WASHA.01/RIW