FNUS75 KRIW 010957
FWSRIW

SPOT FORECAST FOR FONTENELLE...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
357 AM MDT WED AUG 1 2012

FORECAST IS BASED ON REQUEST TIME OF 1748 MDT ON JULY 31.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

MONSOONAL MOISTURE WILL REMAIN OVER THE AREA TODAY. THIS MOISTURE
COMBINED WITH DAYTIME HEATING WILL RESULT IN WIDELY SCATTERED
AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. THE MAIN HAZARDS
WILL BE STRONG AND ERRATIC WINDS...AS WELL AS DANGEROUS CLOUD TO
GROUND LIGHTNING. HIGH TEMPERATURES AND RELATIVE HUMIDITY SHOULD BE
SIMILAR TO WHAT OCCURRED TUESDAY. VERY DRY AND BREEZY CONDITIONS ARE
EXPECTED OVER THE WILDFIRE AREA THURSDAY AND FRIDAY...WITH A DRY
COLD FRONT MOVING ACROSS THE AREA FRIDAY.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (50 PERCENT). ISOLATED SHOWERS
                    POSSIBLE IN THE MORNING...THEN WIDELY SCATTERED
                    SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....75-80.
MIN HUMIDITY........17-21 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH BECOMING WEST 10 TO 15
                    MPH IN THE AFTERNOON. GUSTS 20 TO 25 MPH IN THE
                    AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST AROUND 15 MPH.
LAL.................1 UNTIL NOON...THEN 3.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2900 FT AGL INCREASING TO 9000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
SMOKE DISPERSAL.....POOR INCREASING TO VERY GOOD BY AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (50 PERCENT) WITH ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE EVENING...THEN BECOMING
                    MOSTLY CLEAR (10 PERCENT) BY MIDNIGHT.
MIN TEMPERATURE.....45-50.
MAX HUMIDITY........25-30 PERCENT...EXCEPT LOCALLY MUCH HIGHER
                    AROUND 65 PERCENT NEAR SNIDER BASIN.
20 FOOT WINDS.......WEST WINDS 8 TO 10 MPH UNTIL EARLY MORNING
                    BECOMING DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTS UP
                    TO 15 MPH. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS IN THE EVENING.
RIDGE TOP WINDS.....WEST NORTHWEST 10 TO 15 MPH.
LAL.................2 UNTIL 9 PM...THEN 1.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6600-7600 FT AGL DECREASING TO 2300 FT AGL
                    BY 9 PM.
TRANSPORT WINDS.....WEST NORTHWEST 10 TO 15 MPH.
SMOKE DISPERSAL.....DECREASING TO POOR BY 9 PM.

.THURSDAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....75-80.
MIN HUMIDITY........10-12 PERCENT.
20 FOOT WINDS.......WEST WINDS AROUND 10 MPH...INCREASING TO 15 TO
                    20 MPH. FREQUENT GUSTS OF 25 TO 30 MPH IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....WEST NORTHWEST 15 TO 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3200 FT AGL INCREASING TO 8700 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 20 MPH.
SMOKE DISPERSAL.....GOOD TO VERY GOOD.

.FORECAST DAYS 3 THROUGH 5...

.THURSDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 40S. WEST WINDS
10 TO 15 MPH.

.FRIDAY...MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS AROUND 75.
WEST WINDS 10 TO 20 MPH. FREQUENT GUSTS BETWEEN 25 AND 30 MPH.

.SATURDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER
70S. WINDS GENERALLY LESS THAN 10 MPH.

.SUNDAY...MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 70S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...LANCASTER
REASON FOR REQUEST...WILDFIRE
.TAG 20120731.FONTE.01/RIW