FNUS75 KRIW 031100
FWSRIW

SPOT FORECAST FOR NEW BOOT...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
500 AM MDT THU SEP 3 2009

FORECAST IS BASED ON REQUEST TIME OF 1819 MDT ON SEPTEMBER 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A RIDGE OF HIGH PRESSURE OVER THE AREA WILL RESULT IN LIGHT WINDS
AND ABOVE AVERAGE TEMPERATURES FOR TODAY AND FRIDAY. ENOUGH MID
LEVEL MOISTURE WILL BE AVAILABLE FOR AN ISOLATED THUNDERSTORM
DURING THE AFTERNOON AND EARLY EVENING TODAY AND FRIDAY. RELATIVE
HUMIDITY WILL BE LOW OVER THE NEXT COUPLE OF DAYS...WITH ONLY POOR
RECOVERY AT NIGHT.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....74-78.
MIN HUMIDITY........15-20 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH...WITH GUSTS TO 15 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
                    IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 5 TO 10 MPH SHIFTING TO THE WEST NORTHWEST
                    AROUND 1500.
LAL.................1 UNTIL 1200...THEN 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). ISOLATED THUNDERSTORMS
                    POSSIBLY THROUGH 2000.
MIN TEMPERATURE.....50 TO 55.
MAX HUMIDITY........30-35 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3-6 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE EVENING.
RIDGE TOP WINDS.....NORTHWEST 5 TO 10 MPH SHIFTING TO THE NORTH
                    AROUND 5 MPH AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.FRIDAY...
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (50-60 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....75-80.
MIN HUMIDITY........15-20 PERCENT.
20 FOOT WINDS.......LIGHT AND VARIABLE BECOMING UPSLOPE/UPVALLEY 4-8 MPH
                    AROUND 1000. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....LIGHT AND VARIABLE SHIFTING TO THE WEST 4 TO 8 MPH
                    IN THE AFTERNOON.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. LOWS IN THE UPPER 40S. WINDS
GENERALLY LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. SOUTHWEST WINDS 10
TO 20 MPH...WITH GUSTS TO 30 MPH.
.LABOR DAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE MID 60S.
SOUTHWEST WINDS AROUND 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...IC
REASON FOR REQUEST...WILDFIRE
.TAG 20090902.NEWBO.01/RIW