FNUS75 KRIW 180926
FWSRIW

SPOT FORECAST FOR CYGNET...NPS YNP
NATIONAL WEATHER SERVICE RIVERTON WY
326 AM MDT TUE SEP 18 2012

FORECAST IS BASED ON REQUEST TIME OF 1852 MDT ON SEPTEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

THE WEATHER PATTERN WILL CHANGE LITTLE THROUGH THE END OF THE WEEK WITH
MILD DAYS...COOL NIGHTS AND NO PRECIPITATION CHANCES. TEMPERATURES WILL
BE WARMER AND RELATIVE HUMIDITY LOWER TODAY...THAN WHAT OCCURRED MONDAY.
WINDS WILL BE LIGHT AND VARIABLE THIS MORNING...BECOMING WEST 5 TO 10
MPH IN THE AFTERNOON. SIMILAR CONDITIONS WILL OCCUR WEDNESDAY...BUT
WINDS IN THE AFTERNOON WILL BE MORE FROM THE NORTHWEST.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....67.
MIN HUMIDITY........20 PERCENT.
20 FOOT WINDS.......LIGHT AND VARIABLE 2-5 MPH...BECOMING WEST
                    5-10 MPH BY AROUND NOON. GUSTS TO 20 MPH IN
                    THE AFTERNOON.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH BECOMING 15 TO 20 MPH BY
                    EARLY AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....WEST 10 MPH BECOMING 15-20 MPH BY EARLY AFTERNOON.
SMOKE DISPERSAL.....GOOD IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....AROUND 30.
MAX HUMIDITY........80 PERCENT.
20 FOOT WINDS.......WEST 5-10 MPH...BECOMING LIGHT AND VARIABLE
                    BY 8 PM.
RIDGE TOP WINDS.....WEST AROUND 15 MPH DECREASING TO 5-10 MPH
                    BY MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 800 FT AGL BY 8 PM.
TRANSPORT WINDS.....WEST AROUND 15 MPH DECREASING TO 5-10 MPH
                    BY MIDNIGHT.
SMOKE DISPERSAL.....POOR BY 8 PM.

.WEDNESDAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....67.
MIN HUMIDITY........20 PERCENT.
20 FOOT WINDS.......LIGHT AND VARIABLE 3-5 MPH...BECOMING WEST
                    TO NORTHWEST 4-8 MPH BY NOON. GUSTS TO 20 MPH.
RIDGE TOP WINDS.....WEST 5-10 MPH...BECOMING NORTHWEST 10-15 MPH
                    IN THE EARLY AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......7200 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 5-10 MPH...BECOMING NORTHWEST AROUND 15 MPH
                    IN THE EARLY AFTERNOON.
SMOKE DISPERSAL.....GOOD IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...

.WEDNESDAY NIGHT...MOSTLY CLEAR. LOWS IN THE LOWER 30S.
WINDS GENERALLY LESS THAN 10 MPH.

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

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

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

$$

FORECASTER...MURRELL
REQUESTED BY...KEITH KRAUSE
REASON FOR REQUEST...WILDFIRE
.TAG 20120917.CYGNE.02/RIW