FNUS75 KRIW 171602
FWSRIW

SPOT FORECAST FOR CYGNET...NPS YNP
NATIONAL WEATHER SERVICE RIVERTON WY
1002 AM MDT MON SEP 17 2012

FORECAST IS BASED ON REQUEST TIME OF 0921 MDT ON SEPTEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE BUILDS INTO NORTHWEST WYOMING OVER THE NEXT FEW DAYS.
BREEZY NORTHWEST WINDS SHOULD OCCUR THIS AFTERNOON AND EARLY EVENING.
OTHERWISE...THE RESULT OF THIS HIGH PRESSURE WILL BE LIGHT WINDS AND
VERY COOL NIGHTS. OTHER THAN AREAS OF SMOKE ALOFT...THE SKY WILL BE
GENERALLY CLEAR THE NEXT FEW DAYS.

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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT).
MAX TEMPERATURE.....59-63.
MIN HUMIDITY........24-27 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING NORTHWEST
                    8-12 MPH BY 1400. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....NORTHWEST 8 TO 12 MPH...INCREASING TO 15 TO 20
                    MPH BY 1400.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2400-3400 FT AGL INCREASING TO 6100-7100 FT AGL
                    BY 1500.
TRANSPORT WINDS.....NORTHWEST 14 TO 20 MPH.
SMOKE DISPERSAL.....POOR (38900 KNOT-FT) INCREASING TO VERY GOOD
                    (120100 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....27-31.
MAX HUMIDITY........80-84 PERCENT.
20 FOOT WINDS.......NORTH WINDS AROUND 10 MPH WITH GUSTS TO AROUND
                    15 MPH EARLY IN THE EVENING BECOMING
                    DOWNSLOPE/DOWNVALLEY 3-6 MPH BY 0100.
RIDGE TOP WINDS.....NORTH 10 TO 15 MPH SHIFTING TO THE SOUTHWEST
                    AND DECREASING TO 5 TO 10 MPH BY 0400.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 1400-2400 FT AGL BY 0200.
TRANSPORT WINDS.....NORTH 12 TO 20 MPH SHIFTING TO THE SOUTHWEST
                    AROUND 12 MPH BY 0100.
SMOKE DISPERSAL.....GOOD (76600 KNOT-FT) DECREASING TO POOR (21500
                    KNOT-FT) AFTER MIDNIGHT.

.TUESDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT). AREAS OF SMOKE.
MAX TEMPERATURE.....65-68.
MIN HUMIDITY........18-22 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH BECOMING WEST 10 TO 12
                    MPH WITH HIGHER GUSTS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 5 TO 15 MPH SHIFTING TO THE WEST
                    AROUND 20 MPH LATE IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1700-2700 FT AGL INCREASING TO 4600-5600 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 12 TO 20 MPH SHIFTING TO THE WEST
                    LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (28400 KNOT-FT) INCREASING TO GOOD (87000
                    KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...CLEAR. AREAS OF SMOKE. LOWS IN THE LOWER 30S.
WINDS GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...CLEAR. AREAS OF SMOKE. LOWS IN THE LOWER 30S. HIGHS
IN THE MID 60S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...CLEAR. LOWS AROUND 30. HIGHS IN THE UPPER 60S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BRANHAM/KPL
REQUESTED BY...KEITH KRAUSE
REASON FOR REQUEST...WILDFIRE
.TAG 20120917.CYGNE.01/RIW