FNUS75 KRIW 222135
FWSRIW

SPOT FORECAST FOR FONTENELLE...USFS
NATIONAL WEATHER SERVICE RIVERTON WY
335 PM MDT SUN JUL 22 2012

FORECAST IS BASED ON REQUEST TIME OF 1337 MDT ON JULY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A WEAK DISTURBANCE WILL MOVE INTO WESTERN WYOMING THIS AFTERNOON AND
TRACK ACROSS THE DISTRICT TONIGHT. SHOWERS AND THUNDERSTORMS WILL BE
MOST ACTIVE THROUGH ABOUT 1900L...BUT ISOLATED SHOWERS AND STORMS CAN
BE ANTICIPATED UNTIL EARLY MONDAY MORNING. SOME SLIGHTLY DRIER AIR
WILL WORK INTO THE AREA BRIEFLY MONDAY MORNING BEFORE THE HEATING OF
THE DAY TRIGGERS ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS. DRIER
AIR IS EXPECTED BY WEDNESDAY WITH SHOWERS AND STORMS LESS COMMON.

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

FORECASTER...JONES

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY WITH SCATTERED SHOWERS AND
                    THUNDERSTORMS UNTIL 1900L. THEN GRADUALLY
                    BECOMING PARTLY CLOUDY (40-50 PERCENT) BY
                    2200L WITH ISOLATED SHOWERS AND THUNDERSTORMS.
                    AFTER 2200L...ONLY ISOLATED SHOWERS.
MIN TEMPERATURE.....46-49 AT 8200 FT.
                    52-55 AT 9700 FT.
MAX HUMIDITY........88-92 PERCENT AT 8200 FT.
                    74-78 PERCENT AT 9700 FT.
20 FOOT WINDS.......GUSTY AND ERRATIC OUTFLOW WIND OF 10 TO 15 MPH
                    WITH GUSTS TO NEAR 30 MPH. WIND BECOMING
                    DOWNSLOPE/DOWNVALLEY 4 TO 7 MPH BETWEEN
                    2100L AND 2300L.
RIDGE TOP WINDS.....WEST 5 TO 10 MPH BUT HIGHLY VARIABLE DIRECTION
                    AND SPEED EXPECTED THIS EVENING IN ASSOCIATION
                    WITH SHOWERS AND STORMS.
LAL.................4 UNTIL 1900L...THEN LAL 2 UNTIL 2200L...THEN
                    LAL 1.
CHC OF WETTING RAIN.15 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.MONDAY...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) WITH ISOLATED
                    SHOWERS UNTIL 1400L...THEN BECOMING MOSTLY
                    CLOUDY WITH WIDELY SCATTERED SHOWERS AND
                    THUNDERSTORMS.
MAX TEMPERATURE.....77-80 AT 8200 FT.
                    74-77 AT 9700 FT.
MIN HUMIDITY........24-28 PERCENT AT 8200 FT.
                    29-33 PERCENT AT 9700 FT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH UNTIL
                    1000L...THEN BECOMING UPSLOPE/UPVALLEY
                    5 TO 9 MPH. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR SHOWERS AND THUNDERSTORMS.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
LAL.................1 UNTIL 1400L...THEN LAL 3.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

. MONDAY NIGHT...
SKY/WEATHER.........PARTLY CLOUDY (40-60 PERCENT) WITH WIDELY
                    SCATTERED SHOWERS AND THUNDERSTORMS UNTIL
                    2000L...THEN ISOLATED SHOWERS ONLY.
MIN TEMPERATURE.....44-47 AT 8200 FT.
                    48-51 AT 9700 FT.
MAX HUMIDITY........78-82 PERCENT AT 8200 FT.
                    71-75 PERCENT AT 9700 FT.
20 FOOT WINDS.......WEST WINDS 7 TO 10 MPH UNTIL 2100L...THEN
                    BECOMING DOWNSLOPE/DOWNVALLEY 4 TO 7 MPH
                    BY MIDNIGHT. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR SHOWERS AND THUNDERSTORMS.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
LAL.................3 UNTIL 2000L...THEN LAL 1.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.TUESDAY...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) WITH ISOLATED
                    SHOWERS AND THUNDERSTORMS AFTER 1500L.
MAX TEMPERATURE.....74-77 AT 8200 FT.
                    70-73 AT 9700 FT.
MIN HUMIDITY........24-28 PERCENT AT 8200 FT.
                    29-33 PERCENT AT 9700 FT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH UNTIL
                    1000L...THEN BECOMING UPSLOPE/UPVALLEY
                    5 TO 9 MPH BY 1300L. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR SHOWERS AND THUNDERSTORMS.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
LAL.................1 UNTIL 1500L...THEN LAL 2.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...

.TUESDAY NIGHT...PARTLY CLOUDY WITH ISOLATED EVENING SHOWERS AND
THUNDERSTORMS. LOWS NEAR 45. WINDS GENERALLY LESS THAN 10 MPH.

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

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

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

$$

FORECASTER...JONES
REQUESTED BY...MICHAEL BENTLEY
REASON FOR REQUEST...WILDFIRE
.TAG 20120722.FONTE.01/RIW