FNUS75 KRIW 090901
FWSRIW

SPOT FORECAST FOR FONTENELLE...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
301 AM MDT THU AUG 9 2012

FORECAST IS BASED ON REQUEST TIME OF 1743 MDT ON AUGUST 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...

.DISCUSSION...

MONSOONAL MOISTURE WILL BEGIN TO SURGE INTO THE AREA TODAY...BUT THE
ATMOSPHERE REMAINS RELATIVELY DRY. WIDELY SCATTERED SHOWERS AND
THUNDERSTORMS ARE EXPECTED MAINLY THIS AFTERNOON AND EVENING...BUT
VERY LITTLE OR NO RAIN IS EXPECTED FROM THIS ACTIVITY. A RED FLAG
WARNING IS IN EFFECT THIS AFTERNOON AND EVENING FOR DRY
THUNDERSTORMS...STRONG AND ERRATIC THUNDERSTORM WINDS...AND LOW
AFTERNOON RELATIVE HUMIDITY. EXPECT MAINLY LIGHT AND TERRAIN DRIVEN WINDS
TODAY...EXCEPT FOR WINDS PRODUCED BY NEARBY SHOWERS OR THUNDERSTORMS.

A BETTER CHANCE FOR THUNDERSTORMS WILL OCCUR FRIDAY AFTERNOON AND
EVENING...AS A DISTURBANCE QUICKLY PUSHES EAST ACROSS THE PACIFIC
NORTHWEST INTO THE NORTHERN ROCKIES...AND INTERACTS WITH THE
MONSOONAL MOISTURE ALREADY IN PLACE. HOWEVER...A WIDESPREAD
WETTING RAIN IS UNLIKELY.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (65-75 PERCENT). ISOLATED RAIN
                    SHOWERS IN THE MORNING...THEN WIDELY SCATTERED
                    DRY THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....83.
MIN HUMIDITY........16 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH. STRONG GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....NORTHWEST 5-10 MPH.
LAL.................1 UNTIL NOON...THEN 6.
CHC OF WETTING RAIN.1 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2400 FT AGL INCREASING TO 9500 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....WEST NORTHWEST 10 TO 15 MPH.
SMOKE DISPERSAL.....INCREASING TO VERY GOOD BY AFTERNOON.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (75 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (50 PERCENT). WIDELY SCATTERED
                    DRY THUNDERSTORMS THROUGH 9 PM...THEN AN ISOLATED
                    SHOWER POSSIBLE FOR THE REMAINDER OF THE NIGHT.
MIN TEMPERATURE.....50-53.
MAX HUMIDITY........64-67 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE EVENING.
RIDGE TOP WINDS.....NORTHWEST AROUND 10 MPH...BECOMING SOUTH TO
                    SOUTHEAST 5-10 MPH BY AROUND MIDNIGHT.
LAL.................6 UNTIL 9 PM...THEN 1.
CHC OF WETTING RAIN.1 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......9300 FT AGL DECREASING TO 2000 FT AGL BY 9 PM.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH...BECOMING SOUTH TO
                    SOUTHEAST 5-10 MPH BY AROUND MIDNIGHT.
SMOKE DISPERSAL.....DECREASING TO POOR BY 9 PM.

.FRIDAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (60-70 PERCENT). SCATTERED
                    SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....79.
MIN HUMIDITY........22 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST AROUND
                    10 MPH WITH GUSTS TO AROUND 25 MPH IN THE
                    AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHEAST 5-10 MPH...BECOMING WEST NORTHWEST
                    10-15 MPH BETWEEN 1 PM AND 3 PM.
LAL.................1 UNTIL NOON...THEN 4.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2700 FT AGL INCREASING TO 9600 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST 5-10 MPH...BECOMING WEST NORTHWEST
                    10-20 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR INCREASING TO VERY GOOD IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...

.FRIDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS
IN THE EVENING...THEN ISOLATED SHOWERS AFTER MIDNIGHT. LOWS IN
THE UPPER 40S. WINDS GENERALLY LESS THAN 10 MPH.

.SATURDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 70S. WINDS
GENERALLY LESS THAN 10 MPH.

.SUNDAY...PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS AROUND 80.
WINDS GENERALLY LESS THAN 10 MPH.

.MONDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS AROUND 80. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...USFS
REASON FOR REQUEST...WILDFIRE
.TAG 20120808.FONTE.01/RIW