FNUS75 KRIW 042356
FWSRIW

SPOT FORECAST FOR BREAK...WY-JOX
NATIONAL WEATHER SERVICE RIVERTON WY
556 PM MDT THU AUG 4 2011

FORECAST IS BASED ON REQUEST TIME OF 1726 MDT ON AUGUST 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...AN UPPER LEVEL DISTURBANCE OVER SOUTHERN IDAHO WILL BE TRACKING
NORTHEAST ACROSS WYOMING TONIGHT. SCATTERED THUNDERSTORMS WILL
DEVELOP ACROSS THE AREA THIS EVENING AS THE AIRMASS DESTABILIZES
AND MOISTURE INCREASES AHEAD OF THIS WEATHER FEATURE. THESE STORMS
WILL PERSIST WELL INTO THE NIGHT TONIGHT AS THIS WEATHER FEATURE
TRACKS ACROSS THE AREA. ISOLATED SHOWERS OR THUNDERSTORMS WILL
LINGER FRIDAY MORNING. SCATTERED THUNDERSTORMS WILL REDEVELOP FRIDAY
AFTERNOON AND WILL LINGER INTO THE EVENING. WINDS WILL INCREASE FROM THE
NORTH FRIDAY NIGHT BEHIND A COOL FRONT.

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

FORECASTER...LIPSON

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT). SCATTERED
                    THUNDERSTORMS IN THE EVENING. SCATTERED SHOWERS
                    THROUGH THE NIGHT. ISOLATED THUNDERSTORMS AFTER
                    MIDNIGHT.
MIN TEMPERATURE.....62-65.
MAX HUMIDITY........67-70 PERCENT.
20 FOOT WINDS.......NORTH WINDS 4 TO 6 MPH INCREASING TO 6 TO 11 MPH
                    AFTER MIDNIGHT WITH GUSTS UP TO 15
                    MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE EVENING. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS AFTER
                    MIDNIGHT.
RIDGE TOP WINDS.....NORTH 10 TO 15 MPH SHIFTING TO THE SOUTH AFTER
                    MIDNIGHT...THEN SHIFTING TO THE WEST LATE IN
                    THE NIGHT.
LAL.................4 UNTIL 2400...THEN 2.
CHC OF WETTING RAIN.38 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FRIDAY...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (65-75 PERCENT). ISOLATED SHOWERS
                    IN THE MORNING. ISOLATED THUNDERSTORMS THROUGH
                    THE DAY. SCATTERED SHOWERS IN THE AFTERNOON.
MAX TEMPERATURE.....85-87.
MIN HUMIDITY........19-21 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING NORTH NORTHEAST
                    AROUND 10 MPH BY 1200. GUSTS UP TO 15 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH SHIFTING TO THE NORTHWEST
                    AROUND 20 MPH LATE IN THE AFTERNOON.
LAL.................2.
CHC OF WETTING RAIN.26 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...PARTLY CLOUDY. SCATTERED SHOWERS AND CHANCE OF
THUNDERSTORMS IN THE EVENING...THEN SLIGHT CHANCE OF
THUNDERSTORMS AND ISOLATED SHOWERS AFTER MIDNIGHT. LOWS IN THE
UPPER 50S. WINDS NORTH 10 TO 20 MPH BECOMING NORTHEAST 5 TO 10 MPH
BY 2100 AND THEN LIGHT AND VARIABLE BY MIDNIGHT.
.SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF THUNDERSTORMS AND
ISOLATED SHOWERS. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 80S.
WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE MID 80S. WINDS
GENERALLY LESS THAN 10 MPH.
.MONDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE MID 80S. WINDS
GENERALLY LESS THAN 10 MPH.
.TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 80S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...BILLY FARRIS
REASON FOR REQUEST...WILDFIRE
.TAG 20110804.BREAK.01/RIW