FNUS75 KRIW 280021
FWSRIW

SPOT FORECAST FOR ROCK CREEK RIDGE...IA RWC
NATIONAL WEATHER SERVICE RIVERTON WY
621 PM MDT SUN SEP 27 2009

FORECAST IS BASED ON REQUEST TIME OF 1743 MDT ON SEPTEMBER 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...SURROUNDING OBSERVATIONS WERE MOSTLY REPORTING WEST
NORTHWEST WIND AT 10 TO 15 MPH WITH GUSTS 20 TO 25 MPH THIS LATE
THIS AFTERNOON WITH RELATIVE HUMIDITY IN THE 10 TO 15 PERCENT RANGE.
THESE WINDS WILL GRADUALLY VEER NORTH AND DIMINISH AFTER SUNSET
AHEAD OF AN APPROACHING COLD FRONT. THE COLD FRONT WILL PASS
THROUGH THE AREA BETWEEN MIDNIGHT AND 0200 WITH A DOWNSLOPE
EASTERLY WIND AT 10 TO 15 MPH WITH GUSTS 20 TO 25 MPH THROUGH LATE
MONDAY MORNING...THE FRONT BRINGING A SLIGHT JUMP IN DEW
POINTS...OFFSET BY DOWNSLOPE FLOW.  THE WINDS WILL VEER AROUND TO
A MORE SOUTHERLY DIRECTION MONDAY AFTERNOON...WITH TEMPERATURE AND
HUMIDITY DAYTIME TRENDS SHOWING LITTLE OR NO CHANGE.

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

FORECASTER...MEUNIER

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....33-36.
MAX HUMIDITY........52-57 PERCENT.
20 FOOT WINDS.......BECOMING WEST NORTHWEST WINDS AROUND 10 MPH EARLY
                    IN THE EVENING...THEN VEERING NORTH 5 TO 10 MPH BETWEEN 2100
                    AND MIDNIGHT...THEN BECOMING EAST 10 TO 15 MPH WITH GUSTS
                    20 TO 25 MPH BETWEEN MIDNIGHT AND 0200.
RIDGE TOP WINDS.....NORTHWEST 15 TO 20 MPH...DIMINISHING TO 5 TO 10 MPH AFTER
                    SUNSET...BECOMING EAST SOUTHEAST 5 TO 10 MPH AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3200 FT AGL DECREASING TO 1100 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST 15 MPH SHIFTING TO THE EAST SOUTHEAST
                    5 TO 10 MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....POOR TO FAIR (13300-45900 KNOT-FT).

.MONDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....AROUND 70.
MIN HUMIDITY........15-18 PERCENT.
20 FOOT WINDS.......EAST WINDS AROUND 10 MPH WITH GUSTS TO 20 MPH UNTIL
                    1000...BECOMING SOUTH 5 TO 10 MPH AROUND NOON...INCREASING
                    TO 10 TO 15 MPH WITH GUSTS 20 TO 25 MPH AROUND 1400.
RIDGE TOP WINDS.....SOUTH SOUTHWEST 10 TO 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2000-3000 FT AGL INCREASING TO NEAR 8000 FT AGL AFTER
                    1400.
TRANSPORT WINDS.....SOUTH SOUTHWEST 15 TO 20 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (24800-44500 KNOT-FT) IN THE MORNING AND EARLY
                    AFTERNOON...INCREASING TO VERY GOOD AFTER 1400.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...MOSTLY CLEAR. LOWS IN THE LOWER 40S. WINDS
GENERALLY LESS THAN 10 MPH.
.TUESDAY...PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 60S.
SOUTHWEST WINDS AROUND 12 MPH.
.WEDNESDAY...MUCH COLDER. CLOUDY WITH NUMEROUS SHOWERS WITH
POSSIBLE SNOW SHOWERS AND THUNDERSTORMS. LOWS IN THE LOWER 20S.
HIGHS IN THE LOWER 40S. WEST WINDS AROUND 11 MPH.
.THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW. LOWS IN THE
LOWER 20S. HIGHS AROUND 40. NORTHWEST WINDS AROUND 11 MPH.
.FRIDAY...PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE MID
40S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...IC
REASON FOR REQUEST...WILDFIRE
.TAG 20090927.ROCKC.01/RIW