FNUS75 KRIW 121137
FWSRIW

SPOT FORECAST FOR CYGNET...NPS YNP
NATIONAL WEATHER SERVICE RIVERTON WY
537 AM MDT WED SEP 12 2012

FORECAST IS BASED ON REQUEST TIME OF 2042 MDT ON SEPTEMBER 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A VERY DRY NORTHWEST FLOW WILL PREVAIL THIS
AFTERNOON THROUGH THURSDAY. 24 HOUR TEMPERATURES WILL TREND
SIMILAR AND RELATIVE HUMIDITY SLIGHTLY DRIER TODAY WITH LIGHT
WIND...PREVAILING NORTH TO NORTHWEST IN THE AFTERNOON. TEMPERATURES WILL
TREND WARMER ON THURSDAY WITH LITTLE TREND IN RH AND LIGHT WIND.

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

FORECASTER...MEUNIER

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....58-61.
MIN HUMIDITY........11-14 PERCENT.
20 FOOT WINDS.......BECOMING UPSLOPE/UPVALLEY 4-7 MPH LATE MORNING...THEN
                    NORTHWEST 5 TO 10 MPH IN THE AFTERNOON SHIFTING FROM
                    THE NORTH 1700-1800.
RIDGE TOP WINDS.....NORTHWEST 5 TO 10 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1000-2000 FEET AGL THROUGH MID-MORNING...INCREASING
                    TO 5000-6000 FEET AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR IN THE MORNING...GOOD (66000 KNOT-FT) IN THE
                    AFTERNOON.

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....22-25.
MAX HUMIDITY........70-73 PERCENT.
20 FOOT WINDS.......NORTH 5 TO 10 MPH...GUSTS TO 15 MPH IN THE EVENING.
RIDGE TOP WINDS.....NORTH 5 TO 10 MPH...BECOMING WEST AROUND 5 MPH
                    AFTER MIDNIGHT.

.THURSDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....65-68.
MIN HUMIDITY........11-14 PERCENT.
20 FOOT WINDS.......LIGHT NORTH WIND BECOMING WEST SOUTHWEST 4 TO 8 MPH
                    LATE MORNING AND AFTERNOON.
RIDGE TOP WINDS.....WEST 5 TO 10 MPH.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...CLEAR. LOWS AROUND 30. 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. LOWS IN THE LOWER 30S. HIGHS IN THE
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.

.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS...SNOW
SHOWERS AND ISOLATED THUNDERSTORMS. LOWS IN THE MID 20S. HIGHS IN
THE LOWER 60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...LAURA DOOLEY
REASON FOR REQUEST...WILDFIRE
.TAG 20120911.CYGNE.01/RIW