FNUS75 KRIW 080857
FWSRIW

SPOT FORECAST FOR FONTENELLE...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
257 AM MDT WED AUG 8 2012

FORECAST IS BASED ON REQUEST TIME OF 1949 MDT ON AUGUST 07.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A RIDGE OF HIGH PRESSURE WITH VERY LITTLE MOISTURE AVAILABLE WILL
RESULT IN HOT AND DRY CONDITIONS...AS WELL AS MAINLY LIGHT AND
TERRAIN DRIVEN WINDS AND EXTREMELY LOW RELATIVE HUMIDITY TODAY.
MONSOONAL MOISTURE BEGINS TO WORK INTO THE AREA THURSDAY...WITH
WIDELY SCATTERED AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS
EXPECTED. THE MAIN HAZARDS FROM THE THUNDERSTORM ACTIVITY ON
THURSDAY WILL BE VERY GUSTY AND ERRATIC WINDS AND DRY LIGHTNING.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........SUNNY (10 PERCENT)...BECOMING PARTLY CLOUDY
                    (40 PERCENT) IN THE AFTERNOON.
MAX TEMPERATURE.....84.
MIN HUMIDITY........11 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH. GUSTS TO 15 MPH IN
                    THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHEAST AROUND 10 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2800 FT AGL INCREASING TO 10400 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....SOUTH TO SOUTHWEST AROUND 10 MPH.
SMOKE DISPERSAL.....POOR INCREASING TO VERY GOOD BY AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
MIN TEMPERATURE.....50.
MAX HUMIDITY........45 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....SOUTHEAST AROUND 10 MPH...BECOMING SOUTH TO
                    SOUTHWEST AROUND 10 MPH BY MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......10400-11400 FT AGL DECREASING TO 1700 FT
                    AGL BY 9 PM.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH...BECOMING SOUTH TO
                    SOUTHWEST AROUND 10 MPH BY MIDNIGHT.
SMOKE DISPERSAL.....GOOD DECREASING TO POOR BY 9 PM.

.THURSDAY...
SKY/WEATHER.........PARTLY CLOUDY (40-60 PERCENT). VERY ISOLATED
                    RAIN SHOWERS IN THE MORNING...THEN WIDELY
                    SCATTERED SHOWERS AND THUNDERSTORMS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........14-18 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....WEST NORTHWEST AROUND 10 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2800 FT AGL INCREASING TO 8800 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....WEST NORTHWEST 10-15 MPH.
SMOKE DISPERSAL.....FAIR TO GOOD (54700-93500 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...

.THURSDAY NIGHT...PARTLY CLOUDY. WIDELY SCATTERED SHOWERS AND
THUNDERSTORMS IN THE EVENING. LOWS IN THE UPPER 40S. WINDS
GENERALLY LESS THAN 10 MPH.

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

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

.SUNDAY...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...MURRELL
REQUESTED BY...USFS
REASON FOR REQUEST...WILDFIRE
.TAG 20120807.FONTE.01/RIW