FNUS75 KRIW 171305
FWSRIW

SPOT FORECAST FOR NORTON POINT...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
705 AM MDT SAT SEP 17 2011

FORECAST IS BASED ON REQUEST TIME OF 0643 MDT ON SEPTEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

AN UPPER LEVEL LOW PRESSURE TROUGH AND COLD FRONT OVER EASTERN IDAHO
WILL PRODUCE CLOUDS AND SHOWERS OVER THE FIRE AREA THIS MORNING.
AS THE TROUGH AND FRONT PASSES AROUND MID DAY...CLEARING WILL OCCUR
AS COLDER AIR MOVES IN.  SOME OROGRAPHIC INSTABILITY SHOWERS CAN BE
EXPECTED OVER THE MOUNTAINS IN THE AFTERNOON...THEN CLEARING WILL OCCUR
THROUGH THE EVENING.  SOME FOG MAY FORM IN THE VALLEYS WITH HIGH
HUMIDITY.  SUNDAY DRY AND STABLE WEST FLOW WILL BE OVER THE FIRE AREA
WITH WARMING AND LOWER HUMIDITY.

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

FORECASTER...C.BAKER

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
                    PARTLY CLOUDY IN THE AFTERNOON (45-55 PERCENT).
                    SCATTERED RAIN SHOWERS IN THE MORNING. ISOLATED
                    SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....53-56.
MIN HUMIDITY........28-32 PERCENT.
20 FOOT WINDS.......WEST WINDS 8 TO 13 MPH. GUSTS UP TO 25 MPH
                    IN THE AFTERNOON. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST 12 TO 18 MPH INCREASING TO AROUND 25 MPH
                    IN THE AFTERNOON.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.10 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT).
MIN TEMPERATURE.....27-32.
MAX HUMIDITY........75-80 PERCENT LOCALLY NEAR 100 PERCENT IN THE
                    VALLEYS.
20 FOOT WINDS.......WEST WINDS 8 TO 12 MPH. GUSTS UP TO 25 MPH IN
                    THE EVENING BECOMING LIGHT AND VARIABLE AFTER
                    MIDNIGHT.
RIDGE TOP WINDS.....WEST 12 TO 18 MPH DECREASING TO AROUND 10 MPH
                    AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.SUNDAY...
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT).
MAX TEMPERATURE.....55-60.
MIN HUMIDITY........27-31 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST 10 TO 15
                    MPH WITH GUSTS TO AROUND 25 MPH IN THE LATE
                    MORNING AND AFTERNOON.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH INCREASING TO AROUND 25 MPH
                    LATE IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.SUNDAY NIGHT...PARTLY CLOUDY. LOWS IN THE MID 30S. WEST WINDS
AROUND 10 MPH.
.MONDAY...PARTLY CLOUDY. LOWS IN THE MID 30S. HIGHS IN THE UPPER
50S. WEST WINDS AROUND 10 MPH.
.TUESDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER
50S. WINDS GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...C.BAKER
REQUESTED BY...KELLY CORNWALL
REASON FOR REQUEST...WILDFIRE
.TAG 20110917.NORTO.01/RIW