FNUS75 KRIW 141934
FWSRIW

SPOT FORECAST FOR HAYSTACK...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
134 PM MDT WED AUG 14 2013

FORECAST IS BASED ON REQUEST TIME OF 1321 MDT ON AUGUST 14.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...DRY WEST NORTHWEST FLOW ALOFT WILL INCREASE OVER THE
FIRE AREA THURSDAY AND FRIDAY WITH WARMING AND MOSTLY CLEAR
CONDITIONS.  SMOKE FROM LARGE FIRES IN IDAHO MAY SPREAD OVER THE
AREA...OTHERWISE FEW CLOUDS ARE EXPECTED AFTER THIS AFTERNOON.

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

FORECASTER...C.BAKER

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....76-79.
MIN HUMIDITY........16-19 PERCENT.
20 FOOT WINDS.......WEST 11 TO 12 MPH. GUSTS UP TO 20 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
LAL.................2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) UNTIL 1900
                    THEN BECOMING CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....43-46.
MAX HUMIDITY........52-55 PERCENT.
20 FOOT WINDS.......NORTHWEST WINDS 8 TO 10 MPH WITH GUSTS TO
                    AROUND 15 MPH EARLY IN THE EVENING BECOMING
                    DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....WEST AROUND 15 MPH DECREASING TO AROUND 5 MPH
                    LATE IN THE EVENING...THEN SHIFTING TO THE
                    SOUTHEAST AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.THURSDAY...
SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....78 TO 81.
MIN HUMIDITY........11-14 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....SOUTHEAST AROUND 10 MPH SHIFTING TO THE WEST IN
                    THE LATE MORNING AND AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 40S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS AROUND 80.
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.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE MID 70S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...C.BAKER
REQUESTED BY...IC
REASON FOR REQUEST...WILDFIRE
.TAG 20130814.HAYST.01/RIW