FNUS75 KRIW 131848
FWSRIW

SPOT FORECAST FOR HAYSTACK...USFS
NATIONAL WEATHER SERVICE RIVERTON WY
1248 PM MDT TUE AUG 13 2013

FORECAST IS BASED ON REQUEST TIME OF 1226 MDT ON AUGUST 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

VERY SIMILAR IN MOST RESPECTS TO YESTERDAY...EXCEPT FOR SLIGHTLY
MORE SHOWER AND THUNDERSTORM COVERAGE...BUT LESS GUSTY WIND POTENTIAL.
HIGH TEMPERATURES WILL DROP A COUPLE OF DEGREES AND RH
VALUES WILL RISE SOME. THUNDERSTORMS WILL CONTINUE TO BUILD ACROSS
THE FIRE AREA AND WINDS WILL LIKELY BE GUSTY AND ERRATIC BY AFTERNOON
WITH THUNDERSTORM OUTFLOWS AROUND THE AREA...EVEN IF YOU ARE NOT
DIRECTLY UNDER A SHOWER OR THUNDERSTORM. SHOWERS AND THUNDERSTORMS
WILL LINGER INTO THE EARLY EVENING...BECOMING ISOLATED TO SCATTERED
AGAIN ON WEDNESDAY BEFORE DRYING OUT ON THURSDAY.

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

FORECASTER...BRAUN

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (60-70 PERCENT). ISOLATED TO
                    SCATTERED SHOWERS AND THUNDERSTORMS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....73-76.
MIN HUMIDITY........20-23 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS .
RIDGE TOP WINDS.....BECOMING NORTHWEST AROUND 10 MPH IN THE
                    AFTERNOON.
LAL.................3.
CHC OF WETTING RAIN.15 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). SCATTERED
                    SHOWERS AND THUNDERSTORMS EARLY IN THE
                    EVENING...THEN ISOLATED SHOWERS AND
                    THUNDERSTORMS LATE IN THE EVENING.
MIN TEMPERATURE.....44-47.
MAX HUMIDITY........71-74 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
RIDGE TOP WINDS.....NORTHWEST AROUND 5 MPH SHIFTING TO THE
                    NORTHEAST LATE IN THE EVENING...THEN BECOMING
                    LIGHT AND VARIABLE AFTER MIDNIGHT.
LAL.................2 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.4 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.WEDNESDAY...
SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (55-65 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (45-55 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE LATE MORNING AND
                    AFTERNOON.
MAX TEMPERATURE.....74-77.
MIN HUMIDITY........18-21 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE LATE
                    MORNING AND AFTERNOON.
RIDGE TOP WINDS.....LIGHT AND VARIABLE WINDS BECOMING WEST AROUND
                    10 MPH LATE IN THE AFTERNOON.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 40S. WINDS
GENERALLY LESS THAN 10 MPH.
.THURSDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER
70S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER
70S. WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 70S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BRAUN
REQUESTED BY...WILKINS
REASON FOR REQUEST...WILDFIRE
.TAG 20130813.HAYST.01/RIW