FNUS75 KRIW 020934
FWSRIW

SPOT FORECAST FOR CYGNET FIRE...NPS YNP
NATIONAL WEATHER SERVICE RIVERTON WY
334 AM MDT SUN SEP 2 2012

FORECAST IS BASED ON REQUEST TIME OF 1902 MDT ON SEPTEMBER 01.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A SWATH OF DRIER AIR WILL QUICKLY WORK INTO THE AREA TODAY.
HOWEVER DUE TO THE RAIN OVER THE LAST COUPLE OF DAYS...SOME FOG
AND LOW CLOUDS WILL BE POSSIBLE THROUGH ABOUT 10 AM.
OTHERWISE...MOSTLY SUNNY AND DRY CONDITIONS...WITH MUCH LOWER
AFTERNOON HUMIDITY WILL OCCUR TODAY. DRY AND MILD CONDITIONS WILL
CONTINUE MONDAY. WINDS TODAY AND MONDAY WILL GENERALLY BE FROM THE
SOUTHWEST.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (15 PERCENT). SOME FOG AND LOW
                    CLOUDS POSSIBLE THROUGH ABOUT 10 AM.
MAX TEMPERATURE.....65.
MIN HUMIDITY........20-25 PERCENT.
20 FOOT WINDS.......LIGHT AND VARIABLE...BECOMING SOUTHWEST AROUND
                    10 MPH BY AROUND NOON. GUSTS UP TO 25 MPH IN
                    THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH INCREASING TO AROUND 20
                    MPH 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.......1400 FT AGL INCREASING TO 6900 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 15 TO 25 MPH.
SMOKE DISPERSAL.....POOR INCREASING TO VERY GOOD BY AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....35-40.
MAX HUMIDITY........75-80 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH AND GUSTY EARLY
                    IN THE EVENING BECOMING LIGHT AND VARIABLE 3-6
                    MPH BY AROUND 9 PM.
RIDGE TOP WINDS.....SOUTHWEST 20 MPH...DECREASING TO 10-15 MPH BY
                    10 PM.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......6800 FT AGL DECREASING TO 1200 FT AGL BY 9 PM.
TRANSPORT WINDS.....SOUTHWEST 20 MPH...DECREASING TO 10-15 MPH BY
                    9 PM.
SMOKE DISPERSAL.....GOOD DECREASING TO POOR BY 9 PM.

.LABOR DAY...
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....68.
MIN HUMIDITY........15 PERCENT.
20 FOOT WINDS.......LIGHT AND VARIABLE...BECOMING SOUTHWEST AROUND
                    10 MPH BETWEEN NOON AND 2 PM. GUSTS AROUND 20
                    MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 10-15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1400 FT AGL INCREASING TO 7400 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 15 TO 25 MPH.
SMOKE DISPERSAL.....POOR INCREASING TO VERY GOOD BY AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...

.MONDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 30S. WINDS
GENERALLY LESS THAN 10 MPH.

.TUESDAY...CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH.

.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.

.THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE MID
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...LAURA DOOLEY
REASON FOR REQUEST...WILDFIRE
.TAG 20120901.CYGNE.01/RIW