FNUS75 KRIW 081147
FWSRIW

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

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON MAY 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

WIDELY SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS REMAIN POSSIBLE
OVER THE FIRE SITE TODAY...MAINLY THIS AFTERNOON AND EVENING...IN A
RELATIVELY MOIST AND UNSTABLE ATMOSPHERE. EASTERLY FLOW WILL BE A
TAD STRONGER THAN YESTERDAY WITH GOOD SMOKE DISPERSAL BY AFTERNOON.
SLIGHTLY WARMER TEMPERATURES...LIGHTER WINDS AND A CONTINUED CHANCE
FOR SOME THUNDERSTORMS ARE EXPECTED THURSDAY.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY (60-75 PERCENT) THIS MORNING
                    BECOMING PARTLY CLOUDY (40-60 PERCENT) BY
                    AROUND NOON. WIDELY SCATTERED SHOWERS THROUGH
                    THE DAY. ISOLATED THUNDERSTORMS POSSIBLE IN
                    THE AFTERNOON.
MAX TEMPERATURE.....56.
MIN HUMIDITY........30 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY OR EASTERLY 5-10 MPH. GUSTS
                    TO 15 MPH. GUSTIER AND ERRATIC WINDS EXPECTED
                    NEAR ANY THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....EAST 10-15 MPH. GUSTS TO 25 MPH.
LAL.................1 UNTIL NOON...THEN 2.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1100 FT AGL INCREASING TO 6500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....EAST AROUND 15 MPH.
SMOKE DISPERSAL.....POOR INCREASING TO GOOD BY AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT) WITH WIDELY
                    SCATTERED SHOWERS...MAINLY BEFORE MIDNIGHT.
                    ISOLATED THUNDERSTORMS POSSIBLE THROUGH 9 PM.
MIN TEMPERATURE.....35.
MAX HUMIDITY........85 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
RIDGE TOP WINDS.....EAST 5-10 MPH.
LAL.................2 UNTIL 9 PM...THEN 1.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3300-4300 FT AGL.
TRANSPORT WINDS.....EAST 5-10 MPH.
SMOKE DISPERSAL.....POOR BY 9 PM.

.THURSDAY...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (65-75 PERCENT). SCATTERED RAIN
                    SHOWERS AND ISOLATED THUNDERSTORMS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....61.
MIN HUMIDITY........25 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 3-7 MPH. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....EAST TO NORTHEAST AROUND 5 MPH.
LAL.................1 UNTIL NOON...THEN 2.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1300 FT AGL INCREASING TO 6800 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....EAST NORTHEAST 5-10 MPH.
SMOKE DISPERSAL.....FAIR IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...

.THURSDAY NIGHT...MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS IN THE EVENING. LOWS IN THE MID 30S. WINDS
GENERALLY LESS THAN 10 MPH.

.FRIDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
HIGHS IN THE UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH.

.SATURDAY...PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS.
LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. WINDS GENERALLY LESS
THAN 10 MPH.

.SUNDAY...PARTLY CLOUDY WITH A VERY SLIGHT CHANCE OF SHOWERS. LOWS IN
THE LOWER 40S. HIGHS IN THE MID 60S. WINDS GENERALLY LESS THAN
10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...SEAN SNYDER
REASON FOR REQUEST...PRESCRIBED
.TAG 20130508.UPPER.02/RIW