FNUS75 KRIW 021359
FWSRIW

SPOT FORECAST FOR NORTON POINT...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
759 AM MDT FRI SEP 2 2011

FORECAST IS BASED ON REQUEST TIME OF 0741 MDT ON SEPTEMBER 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 8 PM MDT THIS
EVENING...

.DISCUSSION...

DRY AND STABLE WEST NORTHWEST FLOW ALOFT WILL BE OVER THE FIRE AREA
TODAY AND TONIGHT.  VERY LOW RELATIVE HUMIDITY AND BREEZY TO WINDY
WINDS...ESPECIALLY OVER THE RIDGES WILL COMBINE TO CREATE RED FLAG
CONDITIONS THIS AFTERNOON AND EVENING.  WINDS WILL BE RATHER COMPLEX
THIS AFTERNOON WITH WEST NORTHWEST FLOW MIXING DOWN TO THE RIDGE TOPS.
WITH MOSTLY CLEAR CONDITIONS...UPSLOPE AND UPVALLEY WINDS WILL ENHANCE
CHANNELED WINDS IN THE VALLEYS ON THE EAST SIDE OF THE FIRE.  WINDS WILL
BECOME MORE NORTHERLY THROUGH THE EVENING BECOMING ENHANCED BY DOWN SLOPE
AND DOWN VALLEY DRAINAGE WINDS.

ANOTHER COLD FRONT WILL PUSH SOUTH TONIGHT BRINGING COLDER TEMPERATURES
AND HIGHER RELATIVE HUMIDITY.  WINDS WILL BE MORE VARIABLE IN SPEED AND
DIRECTION ON SATURDAY.

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

FORECASTER...C.BAKER

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....65-70.
MIN HUMIDITY........12-15 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST 14 TO 17
                    MPH WITH GUSTS TO AROUND 30 MPH IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH INCREASING TO WEST 20 TO
                    25 MPH IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....34-37.
MAX HUMIDITY........53-60 PERCENT.
20 FOOT WINDS.......NORTH WINDS 8 TO 15 MPH WITH GUSTS TO AROUND 30
                    MPH.
RIDGE TOP WINDS.....NORTH 15 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.SATURDAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....64-67.
MIN HUMIDITY........24-27 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 MPH SHIFTING TO THE SOUTH
                    IN THE LATE MORNING AND AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.SUNDAY...CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH.
.LABOR DAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS AROUND 70. WINDS
GENERALLY LESS THAN 10 MPH.
.TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 60S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...C.BAKER
REQUESTED BY...KELLY CORNWALL
REASON FOR REQUEST...WILDFIRE
.TAG 20110902.NORTO.01/RIW