FNUS75 KRIW 021639
FWSRIW

SPOT FORECAST FOR BIG TRAILS II...IA CDC
NATIONAL WEATHER SERVICE RIVERTON WY
1039 AM MDT FRI JUL 2 2010

FORECAST IS BASED ON IGNITION TIME OF 1030 MDT ON JULY 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
MOSTLY SUNNY SKIES AND WARM CONDITIONS EXPECTED THIS MORNING. IN
GENERALLY...A BLUSTERY DAY IS EXPECTED ACROSS MUCH OF THE AREA
WITH WIND OF 20 TO 25 MPH AND GUSTS TO AROUND 40...ESPECIALLY
AFTER 1200 TODAY. A DISTURBANCE IN THE AFTERNOON WILL BRING
ISOLATED SHOWERS AND THUNDERSTORMS OVER THE BURN SITE. FURTHER GUSTY
WIND AND LIGHTNING WILL BR THE PRIMARY THREATS FOR ANY STORM
ACTIVITY...THOUGH SMALL HAIL WILL ALSO BE POSSIBLE. AS THE WEEKEND
PROGRESSES...A WAVE OF LOW PRESSURE BEGINS TO MOVE INTO THE STATE.
THIS WILL LEAVE ADDED CLOUD COVER AND ISOLATED SHOWERS AND
THUNDERSTORMS OVER THE BURN SITE AND WILL COOL TEMPERATURES AND
RAISE HUMIDITY FOR THE REMAINDER OF THE WEEKEND.


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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (30-40 PERCENT) BY 1300. ISOLATED
                    SHOWERS AND THUNDERSTORMS AFTER 1200.
MAX TEMPERATURE.....86-89.
MIN HUMIDITY........14-17 PERCENT.
WIND (20 FT)........SOUTHWEST 16 TO 20 MPH WITH GUSTS TO AROUND 40 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
                    IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 25 TO 30 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CWR.................8 PERCENT.
HAINES INDEX........5 INCREASING TO 6 OR HIGH POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH BY 1400.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS THROUGH 2200.
MIN TEMPERATURE.....55-59.
MAX HUMIDITY........65-68 PERCENT.
WIND (20 FT)........BECOMING SOUTH WINDS 8 TO 16 MPH BY 2200. GUSTS
                    UP TO 30 MPH DECREASING TO 15 MPH BY 2200. GUSTY
                    AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
                    IN THE EVENING.
RIDGE TOP WINDS.....SOUTHWEST AROUND 25 MPH BECOMING SOUTH AROUND
                    15 MPH AFTER 2200.
LAL.................2 UNTIL 2200...THEN 1.
CWR.................6 PERCENT.
HAINES INDEX........6... THEN DECREASING TO 5 OR OR MODERATE POTENTIAL
                    FOR LARGE PLUME DOMINATED FIRE GROWTH BY 2100.

.SATURDAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS BEGINNING AT 0600.
MAX TEMPERATURE.....73-77.
MIN HUMIDITY........34-37 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 5-9 MPH BECOMING NORTHWEST AT
                    10-15 MPH AFTER 1400. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....WEST 5 TO 10 MPH SHIFTING TO THE NORTHWEST
                    AROUND 15 MPH BY 1400.
LAL.................2 AFTER 0600.
CWR.................12 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND
THUNDERSTORMS IN THE EVENING. LOWS IN THE LOWER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
.INDEPENDENCE DAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE MID 70S. WINDS
GENERALLY LESS THAN 10 MPH.
.MONDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...DECKER
REASON FOR REQUEST...PRESCRIBED
.TAG 20100702.BIGTR.01/RIW