FNUS75 KRIW 252248
FWSRIW

SPOT FORECAST FOR WARM SPRINGS...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
448 PM MDT THU AUG 25 2011

FORECAST IS BASED ON REQUEST TIME OF 1611 MDT ON AUGUST 25.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...AN UPPER LEVEL DISTURBANCE HAS PUSHED EAST OF THE
AREA THIS AFTERNOON ALONG WITH THE MAIN LINE OF SHOWERS AND
THUNDERSTORMS. A DRIER AND MORE STABLE AIRMASS WAS PUSHING IN
BEHIND THIS FEATURE ACROSS WESTERN WYOMING WITH MAINLY A FEW
WEAKER ISOLATED SHOWERS UPSTREAM. DISSIPATING SHOWERS MAY CONTINUE
TO PRODUCE ERRATIC WIND GUSTS THROUGH 1900L. OTHERWISE LOOK FOR
CLEARING SKIES AND DECREASING WIND. ON SATURDAY...MONSOONAL
MOISTURE WILL CONTINUE TO ROTATE ACROSS THE AREA WITH ISOLATED
SHOWERS AND THUNDERSTORMS BLOSSOMING IN THE AFTERNOON AND EARLY
EVENING. THIS ACTIVITY IS EXPECTED TO BE WEAKER...LESS ORGANIZED
THAN TODAY WITH THE LACK OF ANY SIGNIFICANT UPPER LEVEL DISTURBANCES.

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

FORECASTER...MEUNIER

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) WITH ISOLATED SHOWERS THROUGH
                    2000L...THEN CLEARING.
MIN TEMPERATURE.....49-52.
MAX HUMIDITY........64-67 PERCENT.
20 FOOT WINDS.......WEST SOUTHWEST 8 TO 13 MPH WITH GUSTS TO 20 MPH THROUGH
                    2000L THEN DECREASING TO BETWEEN 4-8 MPH LATE EVENING.
RIDGE TOP WINDS.....WEST SOUTHWEST 15 TO 20 MPH DECREASING TO AROUND 10 MPH
                    AFTER MIDNIGHT.
LAL.................2 UNTIL 2000...THEN 1.
CHC OF WETTING RAIN.3 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FRIDAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). ISOLATED SHOWERS AND
                    THUNDERSTORMS AFTER 1100L.
MAX TEMPERATURE.....81-84.
MIN HUMIDITY........16-19 PERCENT.
20 FOOT WINDS.......UPSLOPE OR SOUTHEAST AROUND 5 MPH IN THE MORNING...
                    BECOMING WEST SOUTHWEST 8 TO 13 MPH WITH GUSTS
                    TO 20 MPH BETWEEN NOON AND 1400L.  GUSTY ERRATIC
                    WINDS NEAR SHOWERS AND THUNDERSTORMS.
RIDGE TOP WINDS.....WEST 5 TO 10 MPH...BECOMING SOUTHWEST 15 TO 20 MPH
                    IN THE AFTERNOON.
LAL.................1 UNTIL 1100L...THEN 2.
CHC OF WETTING RAIN.3 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...PARTLY CLOUDY WITH ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 50S. WINDS GENERALLY LESS THAN
10 MPH.
.SATURDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.MONDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 70S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...LAURA W
REASON FOR REQUEST...WILDFIRE
.TAG 20110825.WARMS.01/RIW