FNUS75 KRIW 111106
FWSRIW

SPOT FORECAST FOR CYGNET...NPS YNP
NATIONAL WEATHER SERVICE RIVERTON WY
506 AM MDT TUE SEP 11 2012

FORECAST IS BASED ON REQUEST TIME OF 1912 MDT ON SEPTEMBER 10.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A VERY DRY WEST TO NORTHWEST FLOW WILL REMAIN OVER
THE AREA THROUGH WEDNESDAY WITH DEWPOINTS IN THE TEENS TO LOWER
20S. TEMPERATURES WILL TREND AROUND 8 DEGREES COOLER TODAY AND
THEN LITTLE 24 HOUR TREND THROUGH WEDNESDAY. HIGH CLOUDS ON THE SOUTHERN
HORIZON WILL CONTINUE TO BE SUPPRESSED FURTHER SOUTH LEAVING
MAINLY CLEAR SKIES THROUGH WEDNESDAY. WINDS WILL CONTINUE TO TREND
LIGHTER TODAY AND WEDNESDAY...WESTERLY BREEZES MIXING OUT THIS
AFTERNOON WITH WINDS BECOMING LIGHT NORTHWEST WEDNESDAY AFTERNOON.

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

FORECASTER...MEUNIER

.TODAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....59-62.
MIN HUMIDITY........14-17 PERCENT.

20 FOOT WINDS.......NORTH 4-7 MPH...BECOMING SOUTHWEST 5 TO 10 MPH
                    LATE MORNING...THEN BECOMING WEST AROUND 10 MPH WITH
                    GUSTS 20 TO 25 MPH EARLY AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH...BECOMING WEST 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.......2000-3000 FT AGL INCREASING TO 5300-6300 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
SMOKE DISPERSAL.....POOR (37500 KNOT-FT) INCREASING TO GOOD (93300
                    KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....26-29.
MAX HUMIDITY........65-70 PERCENT.

20 FOOT WINDS.......WEST WINDS AROUND 10 MPH WITH GUSTS 15 TO 20 MPH
                    UNTIL SUNSET...BECOMING NORTH 4-7 MPH AFTER MIDNIGHT.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.

.WEDNESDAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 60.
MIN HUMIDITY........12-15 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-7 MPH LATE MORNING...BECOMING
                    NORTHWEST 5 TO 10 MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH BECOMING NORTHWEST 5 TO 10 MPH
                    LATE MORNING THROUGH THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...CLEAR. LOWS IN THE LOWER 20S. WINDS GENERALLY
LESS THAN 10 MPH.

.THURSDAY...CLEAR. LOWS IN THE UPPER 20S. HIGHS IN THE MID 60S.
WINDS GENERALLY LESS THAN 10 MPH.

.FRIDAY...CLEAR. LOWS IN THE LOWER 30S. HIGHS AROUND 70. WINDS
GENERALLY LESS THAN 10 MPH.

.SATURDAY...MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 60S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...JEFF SINGER
REASON FOR REQUEST...WILDFIRE
.TAG 20120910.CYGNE.01/RIW