FNUS75 KRIW 211928
FWSRIW

SPOT FORECAST FOR NORTON...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
128 PM MDT SUN AUG 21 2011

FORECAST IS BASED ON REQUEST TIME OF 1300 MDT ON AUGUST 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A WEST FLOW WILL BE OVER THE FIRE AREA TODAY AND TONIGHT WITH
SOME MID AND HIGH LEVEL MOISTURE. THIS WILL BRING WIDELY SCATTERED SHOWERS
AND THUNDERSTORMS THROUGH THIS EVENING. LIGHTNING AND WIND GUSTS
TO 45 MPH WILL BE THE PRIMARY THREATS. THE ATMOSPHERE DRIES SOME
FOR MONDAY WITH MAINLY SOME AFTERNOON/EVENING CUMULUS EXPECTED.
WEST WINDS WILL BEGIN TO INCREASE WITH LOWER RH'S AND WARMER
TEMPS.

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

FORECASTER...T.BAKER

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) WITH WIDELY
                    SCATTERED SHOWERS AND THUNDERSTORMS.
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........15-18 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH WITH GUSTS TO 20 MPH.
                    GUSTY AND ERRATIC WINDS TO 45 MPH EXPECTED
                    NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....WEST 5-10 MPH GUSTS TO 20 MPH.
LAL.................1 UNTIL 1200...THEN 3.
CHC OF WETTING RAIN.6 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT). SLIGHT CHANCE OF
                    SHOWERS AND THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....42-45.
MAX HUMIDITY........60-65 PERCENT.
20 FOOT WINDS.......WEST WINDS 5-10 MPH WITH GUSTS TO AROUND 15
                    MPH EARLY IN THE EVENING BECOMING
                    DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTY AND ERRATIC
                    WINDS TO 45 MPH EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
RIDGE TOP WINDS.....WEST 5 TO 10 MPH GUSTS TO 20 MPH. GUSTY AND ERRATIC
                    WINDS TO 45 MPH EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
LAL.................2 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.6 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.MONDAY...
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT).
MAX TEMPERATURE.....80-85.
MIN HUMIDITY........10-15 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST 5 TO 10
                    MPH GUSTS TO 20 MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST 5 TO 10 MPH SHIFTING TO THE SOUTHWEST
                    8-12 MPH GUSTS TO 25 MPH IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 40S. WINDS
GENERALLY LESS THAN 10 MPH.
.TUESDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID
70S. WEST TO NORTHWEST WINDS 10 TO 15 MPH GUSTS TO 30 MPH.
.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE
MID 70S. WEST TO NORTHWEST WINDS 10 TO 15 MPH GUSTS TO 30 MPH.
.THURSDAY...PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS IN THE
MID 70S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...T.BAKER
REQUESTED BY...CDC
REASON FOR REQUEST...WILDFIRE
.TAG 20110821.NORTO.01/RIW