FNUS75 KRIW 100955
FWSRIW

SPOT FORECAST FOR FONTENELLE...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
355 AM MDT FRI AUG 10 2012

FORECAST IS BASED ON REQUEST TIME OF 2053 MDT ON AUGUST 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...

.DISCUSSION...

MONSOONAL MOISTURE WILL RESULT IN ISOLATED TO SCATTERED SHOWERS
AND THUNDERSTORMS TODAY AND TONIGHT. THE BEST CHANCE FOR THUNDERSTORMS
WILL OCCUR BETWEEN 3 PM AND 9 PM. THERE WILL BE A MIXTURE OF DRY
AND WET THUNDERSTORMS...BUT WITH CRITICALLY DRY FUELS ANY LIGHTNING
COULD SPARK A NEW WILDFIRE. IN ADDITION...THE STRONG AND ERRATIC
WINDS FROM THESE THUNDERSTORMS COULD CREATE CONTROL PROBLEMS.
THUS A RED FLAG WARNING IS IN EFFECT THROUGH 9 PM THIS EVENING.

A WEAK STORM SYSTEM WILL MOVE ACROSS THE AREA SATURDAY...WITH THE
ASSOCIATED COLD FRONT MOVING ACROSS THE WILDFIRE AREA BETWEEN NOON
AND 2 PM SATURDAY. THE BEST SHOT AT SEEING ANY SHOWER AND THUNDERSTORM
ACTIVITY WILL BE ALONG AND AHEAD OF THIS FRONT. BREEZY WEST TO
NORTHWEST WINDS ARE EXPECTED IN WAKE OF THIS FRONT SATURDAY AFTERNOON.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (40 PERCENT) WITH ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE MORNING. MOSTLY CLOUDY
                    (75 PERCENT) WITH SCATTERED SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....80.
MIN HUMIDITY........22 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH...BECOMING WEST AROUND
                    10 MPH BETWEEN NOON AND 2 PM. WINDS BECOMING
                    PREDOMINATELY DOMINATED BY THUNDERSTORM WINDS
                    AFTER 3 PM. STRONG GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTH 5-10 MPH BECOMING WEST TO NORTHWEST 10-15
                    MPH BY AROUND 2 PM.
LAL.................2 UNTIL 3 PM...THEN 4.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......8200 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH SHIFTING TO THE WEST AROUND
                    15 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....INCREASING TO GOOD (87200 KNOT-FT) BY AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (75 PERCENT) WITH SCATTERED SHOWERS
                    AND THUNDERSTORMS THROUGH 9 PM...AND THEN PARTLY
                    CLOUDY (55 PERCENT) WITH ISOLATED SHOWERS AND
                    THUNDERSTORMS FOR THE REST OF THE NIGHT.
MIN TEMPERATURE.....50.
MAX HUMIDITY........60 PERCENT.
20 FOOT WINDS.......WINDS PREDOMINATELY DRIVEN BY GUSTY AND ERRATIC
                    THUNDERSTORM WINDS THROUGH MIDNIGHT...THEN WEST
                    5 TO 10 MPH AROUND MIDNIGHT.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
LAL.................4 UNTIL 9 PM...THEN 2.
CHC OF WETTING RAIN.10 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 2800 FT AGL BY AROUND 9 PM.
TRANSPORT WINDS.....WEST AROUND 15 MPH.
SMOKE DISPERSAL.....DECREASING TO FAIR BY 10 PM.

.SATURDAY...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS...MAINLY IN THE MORNING.
MAX TEMPERATURE.....75.
MIN HUMIDITY........16 PERCENT.
20 FOOT WINDS.......WEST 5-10 MPH...BECOMING WEST NORTHWEST 10-15
                    MPH BY AROUND NOON. GUSTS TO 25 MPH. GUSTY
                    AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....WEST NORTHWEST 15 TO 25 MPH.
LAL.................2.
CHC OF WETTING RAIN.0 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 7300 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST NORTHWEST AROUND 20 MPH.
SMOKE DISPERSAL.....INCREASING TO VERY GOOD BY AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...

.SATURDAY NIGHT...PARTLY CLOUDY. LOWS IN THE UPPER 40S. WINDS
WEST NORTHWEST 10 TO 15 MPH IN THE EVENING...BECOMING DOWNSLOPE OR
DOWNVALLEY 3-6 MPH BY MIDNIGHT.

.SUNDAY...PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE MID
70S. WINDS GENERALLY LESS THAN 10 MPH.

.MONDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WEST
WINDS 10 TO 15 MPH.

.TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WEST
WINDS 10-15 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...LANCASTER
REASON FOR REQUEST...WILDFIRE
.TAG 20120809.FONTE.01/RIW