FNUS75 KRIW 151606
FWSRIW

SPOT FORECAST FOR FONTENELLE...USFS
NATIONAL WEATHER SERVICE RIVERTON WY
1006 AM MDT WED AUG 15 2012

FORECAST IS BASED ON REQUEST TIME OF 0910 MDT ON AUGUST 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
WEST-NORTHWEST FLOW ALOFT WILL CONTINUE OVER THE FIRE SITE THROUGH
THURSDAY. A FEW SHOWERS AND STORMS COULD DEVELOP THIS AFTERNOON
AS A WEAK WEATHER SYSTEM TRACKS TOWARD THE STATE. A COLD FRONT
SLIDING SOUTH ON THE EAST SIDE OF THE CONTINENTAL DIVIDE TODAY WILL
BRING A QUICK WIND SHIFT LATE TONIGHT AND COOLER TEMPERATURES FOR
THURSDAY. A RIDGE OF HIGH PRESSURE WILL BUILD WEST OF WYOMING FRIDAY
AND SATURDAY. THIS DRY PATTERN WILL ALLOW FOR DRY AND WEAK NORTHWEST
FLOW AND WARMER TEMPERATURES BOTH DAYS. SHOWERS AND THUNDERSTORMS
WILL NOT RETURN UNTIL LATE SUNDAY AFTERNOON AT THE EARLIEST.

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

FORECASTER...JONES

.TODAY...
SKY/WEATHER.........MOSTLY CLEAR UNTIL 1300L...THEN BECOMING
                    PARTLY CLOUDY (35-45 PERCENT) WITH ISOLATED
                    SHOWERS AND THUNDERSTORMS AFTER 1400L.
MAX TEMPERATURE.....75-78 AT 8200 FT.
                    70-73 AT 9700 FT.
MIN HUMIDITY........14-17 PERCENT AT 8200 FT.
                    19-22 PERCENT AT 9700 FT.
20 FOOT WINDS.......WEST WINDS 12 TO 15 MPH WITH GUSTS TO AROUND
                    30 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS.
RIDGE TOP WINDS.....WEST 20 TO 25 MPH.
LAL.................1 UNTIL 1400L...THEN LAL 2.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......RISING TO AROUND 9000 FT AGL BY 1400L.
TRANSPORT WINDS.....WEST-NORTHWEST 20 TO 25 MPH.
SMOKE DISPERSAL.....BECOMING EXCELLENT BY 1300L.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MIN TEMPERATURE.....36-39 AT 8200 FT.
                    41-44 AT 9700 FT.
MAX HUMIDITY........78-82 PERCENT AT 8200 FT.
                    74-77 PERCENT AT 9700 FT.
20 FOOT WINDS.......WEST WIND 10 TO 14 MPH WITH GUSTS TO AROUND
                    25 MPH UNTIL 2000L...THEN GRADUALLY
                    BECOMING DOWNSLOPE/DOWNVALLEY 4 TO 7 MPH
                    BY 2300L. SOUTH-SOUTHEAST WIND 5 TO 8 MPH
                    POSSIBLE AFTER 0200L.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......GRADUALLY DECREASING TO LESS THAN THAN
                    2000 FT AGL BY 2200L.
TRANSPORT WINDS.....WEST 15 TO 25 MPH UNTIL 2000L...THEN
                    BECOMING DOWNSLOPE/DOWNVALLEY 6 TO 9 MPH
                    BY 2300L.
SMOKE DISPERSAL.....EXCELLENT UNTIL 1900L...THEN DECREASING TO
                    POOR BY 2300L.

.THURSDAY...
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....71-74 AT 8200 FT.
                    66-69 AT 9700 FT.
MIN HUMIDITY........20-23 PERCENT AT 8200 FT.
                    23-26 PERCENT AT 9700 FT.
20 FOOT WINDS.......SOUTH 6 TO 9 MPH UNTIL 1300L...THEN GRADUALLY
                    BECOMING WEST-NORTHWEST 12 TO 15 MPH WITH GUSTS
                    AROUND 25 MPH BY 1500L.
RIDGE TOP WINDS.....WEST-NORTHWEST 14 TO 18 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......GRADUALLY INCREASING TO AROUND 7000 FT AGL
                    BY 1500L.
TRANSPORT WINDS.....WEST AROUND 10 MPH UNTIL 1300L...THEN BECOMING
                    WEST-NORTHWEST 15 TO 20 MPH BY 1500L.
SMOKE DISPERSAL.....POOR UNTIL 1100L...THEN BECOMING VERY GOOD
                    BY 1500L.

.FORECAST DAYS 3 THROUGH 5...

.THURSDAY NIGHT...MOSTLY CLEAR. LOWS 35 TO 40. WINDS GENERALLY
LESS THAN 10 MPH.

.FRIDAY...CLEAR. LOWS NEAR 40. HIGHS 70 TO 75. WINDS GENERALLY
LESS THAN 10 MPH.

.SATURDAY...CLEAR. LOWS NEAR 40. HIGHS 74 TO 78. WINDS GENERALLY
LESS THAN 10 MPH.

.SUNDAY...MOSTLY CLEAR. LOWS NEAR 40. HIGHS 76 TO 79. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...JONES
REQUESTED BY...USFS
REASON FOR REQUEST...WILDFIRE
.TAG 20120815.FONTE.01/RIW