FNUS75 KRIW 030950
FWSRIW

SPOT FORECAST FOR CYGNET FIRE...NPS YNP
NATIONAL WEATHER SERVICE RIVERTON WY
350 AM MDT MON SEP 3 2012

FORECAST IS BASED ON REQUEST TIME OF 1915 MDT ON SEPTEMBER 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

DRY AND MILD CONDITIONS ARE EXPECTED OVER THE NEXT COUPLE OF DAYS.
AFTER THE MORNING INVERSION BREAKS...EXPECT MAINLY SOUTHWEST WINDS
TODAY AND MORE WESTERLY WINDS ON TUESDAY. VERY PATCHY FOG/LOW CLOUDS WILL
BE POSSIBLE THIS MORNING...BUT NOTHING AS WIDESPREAD AS WHAT
OCCURRED YESTERDAY.

A WEAK COLD FRONT IS EXPECTED TO MOVE ACROSS THE WILDFIRE AREA IN
THE THURSDAY AND THURSDAY NIGHT TIME FRAME. MOST IF NOT ALL OF
THE PRECIPITATION WITH THIS SYSTEM WILL BE EAST OF THE DIVIDE.
TEMPERATURES WILL REMAIN WARM ENOUGH THAT THE PRECIPITATION IS
EXPECTED TO REMAIN ALL RAIN BELOW 10000 FEET.

...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).
MAX TEMPERATURE.....64.
MIN HUMIDITY........20 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 BECOMING WEST SOUTHWEST
                    AROUND 20 MPH IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......500 FT AGL INCREASING TO 7100 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST TO WEST SOUTHWEST 15 TO 25 MPH.
SMOKE DISPERSAL.....POOR INCREASING TO VERY GOOD BY AFTERNOON.

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....32-35.
MAX HUMIDITY........80 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH...WITH GUSTS TO
                    20 MPH...BECOMING LIGHT AND VARIABLE BETWEEN 8 PM
                    AND 9 PM.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......7000 FT AGL DECREASING TO 800 FT AGL BY 9 PM.
TRANSPORT WINDS.....SOUTHWEST 10 TO 20 MPH.
SMOKE DISPERSAL.....VERY GOOD DECREASING TO POOR BY 9 PM.

.TUESDAY...
SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....64.
MIN HUMIDITY........20 PERCENT.
20 FOOT WINDS.......LIGHT AND VARIABLE...BECOMING WEST AROUND
                    10 MPH BY AROUND NOON. GUSTS UP TO 25 MPH IN
                    THE AFTERNOON.
RIDGE TOP WINDS.....WEST 15 TO 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1200 FT AGL INCREASING TO 7700 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 20 TO 30 MPH.
SMOKE DISPERSAL.....POOR INCREASING TO EXCELLENT BY IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...

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

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

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

.FRIDAY...MOSTLY CLEAR. 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 20120902.CYGNE.01/RIW