FNUS75 KRIW 081402
FWSRIW

SPOT FORECAST FOR UPPER WIND FT-6...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
802 AM MDT WED MAY 8 2013

FORECAST IS BASED ON IGNITION TIME OF 1300 MDT ON MAY 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...MOIST AND UNSTABLE EAST FLOW SURFACE AND ALOFT WILL
BE OVER THE BURN AREA TODAY AND THURSDAY.  THIS WILL KEEP SCATTERED
SHOWERS WITH ISOLATED AFTERNOON AND EVENING THUNDERSTORMS OVER THE
AREA BOTH DAYS. RELATIVE HUMIDITY WILL REMAIN ELEVATED WITH EAST
AND UPSLOPE/UPVALLEY DAYTIME WINDS.

...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 (75-85 PERCENT). CHANCE OF
                    SNOW SHOWERS IN THE MORNING...THEN A
                    CHANCE OF RAIN SHOWERS AND ISOLATED
                    THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....56-59.
MIN HUMIDITY........33-36 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....EAST 10 TO 15 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.20 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4000-4500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....EAST 12 TO 15 MPH.
SMOKE DISPERSAL.....GOOD BY 1100 MDT (60000-67500 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (50-60 PERCENT). SCATTERED RAIN
                    SHOWERS AND ISOLATED THUNDERSTORMS IN THE EVENING.
MIN TEMPERATURE.....31-34.
MAX HUMIDITY........83-86 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
RIDGE TOP WINDS.....EAST 8 TO 12 MPH.
LAL.................2 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.15 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1500-1800 FT AGL.
TRANSPORT WINDS.....EAST 12 MPH.
SMOKE DISPERSAL.....POOR BY 2200 MDT (18000-22000 KNOT-FT).

.THURSDAY...
SKY/WEATHER.........PARTLY CLOUDY IN THE MORNING (45-55 PERCENT) THEN
                    BECOMING MOSTLY CLOUDY (65-75 PERCENT). SCATTERED
                    RAIN SHOWERS AND ISOLATED THUNDERSTORMS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....56-59.
MIN HUMIDITY........31-34 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 13 MPH
                    LATE IN THE AFTERNOON. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....EAST 8 TO 12 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.15 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2300-3300 FT AGL INCREASING TO 4000-4500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....EAST 12 TO 15 MPH.
SMOKE DISPERSAL.....GOOD BY 1100 MDT (60000-67500 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS IN THE EVENING. LOWS IN THE LOWER 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 50S. WINDS GENERALLY
LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN
THE LOWER 40S. HIGHS IN THE LOWER 60S. WINDS GENERALLY LESS THAN
10 MPH.

$$

FORECASTER...C.BAKER
REQUESTED BY...JAY SLAGOWSKI
REASON FOR REQUEST...PRESCRIBED
.TAG 20130508.UPPER.03/RIW