FNUS75 KRIW 292304
FWSRIW

SPOT FORECAST FOR GUNSIGHT...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
504 PM MDT TUE SEP 29 2009

FORECAST IS BASED ON REQUEST TIME OF 1609 MDT ON SEPTEMBER 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WARM AND DRY WINDY WEATHER WILL PREVAIL THROUGH EARLY THIS EVENING.
A STRONG PACIFIC TROUGH MAKING LANDFALL ONTO THE PACIFIC COAST WILL
TRACK INLAND TOWARD THE ROCKIES TONIGHT. MOISTURE AHEAD OF THIS SYSTEM
WILL STREAM INTO THE AREA BY EARLY WEDNESDAY MORNING WITH SNOW MOVING
INTO THE AREA. A STRONG PACIFIC COLD FRONT ASSOCIATED WITH THIS
TROUGH WILL MOVE INTO THE AREA MID MORNING WEDNESDAY. 4 INCHES OF SNOW
IS EXPECTED WEDNESDAY. SOME OF THE SNOW WILL MELT DURING THE AFTERNOON.
ANOTHER 3 INCHES OF SNOWFALL IS LIKELY WEDNESDAY NIGHT.
THE PRECIPITATION WILL GRADUALLY TAPER OFF LATER WEDNESDAY
NIGHT. SCATTERED SNOW SHOWERS WILL CONTINUE IN THE COLD
UNSTABLE NORTHWEST FLOW BEHIND THE TROUGH THURSDAY. DRY WEATHER IS
EXPECTED FRIDAY BEFORE ANOTHER STRONG WEATHER SYSTEM BRINGS MORE
SIGNIFICANT PRECIPITATION TO THE AREA OVER THE WEEKEND. TEMPERATURES
WILL REMAIN COOL THROUGH THE WEEK.

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

FORECASTER...LIPSON

.REST OF TODAY...
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). AREAS OF SMOKE.
MAX TEMPERATURE.....TEMPERATURE GRADUALLY FALLING THROUGH THE UPPER
                    50S THROUGH THE REST OF THE AFTERNOON.
MIN HUMIDITY........THE RELATIVE HUMIDITY WILL BE IN THE LOWER 20S
                    THROUGH SUNSET.
20 FOOT WINDS.......SOUTH SOUTHEAST WINDS 12 MPH WITH GUSTS TO
                    AROUND 22 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......10700 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 24 MPH.
SMOKE DISPERSAL.....EXCELLENT (208000 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
                    CLOUDY (95-100 PERCENT). ISOLATED RAIN AND SNOW
                    SHOWERS AFTER MIDNIGHT.
MIN TEMPERATURE.....34-37.
MAX HUMIDITY........81-84 PERCENT.
20 FOOT WINDS.......SOUTH SOUTHWEST WINDS 10 TO 20 MPH. GUSTS UP TO 25 MPH.
                    THE WINDS WILL DIMINISH TO SOUTHWEST 10 TO 15 MPH AROUND 2100.
                    THEN WINDS INCREASING AGAIN TO 10 TO 20 MPH WITH GUSTS
                    TO 25 MPH BY MIDNIGHT FROM THE SOUTHWEST.
                    THEN SOUTHWEST WINDS DIMINISHING TO 4 TO 8 MPH
                    BY 0500.
RIDGE TOP WINDS.....SOUTH 20 TO 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.37 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......7000 FT AGL DECREASING TO 2400 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....SOUTH 18 TO 24 MPH.
SMOKE DISPERSAL.....VERY GOOD (130500 KNOT-FT) DECREASING TO FAIR
                    (40900 KNOT-FT) AFTER MIDNIGHT.

.WEDNESDAY...
SKY/WEATHER.........CLOUDY (95-100 PERCENT). SNOW DEVELOPING BETWEEN 0900
                    AND 1000. 4 INCHES OF SNOWFALL IS EXPECTED WITH SOME
                    OF THE SNOW MELTING IN THE AFTERNOON.
MAX TEMPERATURE.....35-38.
MIN HUMIDITY........66-69 PERCENT.
20 FOOT WINDS.......LIGHT AND VARIABLE 3 TO 6 MPH BECOMING NORTH
                    AT 10 TO 17 MPH BY 1100. NORTH WINDS INCREASING TO
                    12 TO 22 MPH BY 1400.
RIDGE TOP WINDS.....NORTH 15 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.100 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2400-3400 FT AGL.
TRANSPORT WINDS.....WEST 17 TO 22 MPH.
SMOKE DISPERSAL.....POOR TO GOOD (30100-61500 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...COLDER...CLOUDY. SNOW...TAPERING OFF AFTER
MIDNIGHT. LOWS AROUND 19. NORTHWEST WINDS AROUND 13 MPH.
.THURSDAY...PARTLY CLOUDY WITH ISOLATED SNOW SHOWERS. LOWS AROUND
18. HIGHS IN THE LOWER 30S. NORTHWEST WINDS AROUND 11 MPH.
.FRIDAY...MOSTLY CLOUDY. SCATTERED SHOWERS AND SNOW SHOWERS. LOWS
IN THE MID 20S. HIGHS IN THE UPPER 30S. WINDS GENERALLY LESS THAN
10 MPH.
.SATURDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE MID 20S. HIGHS IN THE MID 30S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...KABER
REASON FOR REQUEST...WILDFIRE
.TAG 20090929.GUNSI.01/RIW