FNUS75 KRIW 051107
FWSRIW

SPOT FORECAST FOR RED ROCK...TETON INTERAGENCY DISPATCH CENTER
NATIONAL WEATHER SERVICE RIVERTON WY
507 AM MDT WED OCT 5 2011

FORECAST IS BASED ON REQUEST TIME OF 1958 MDT ON OCTOBER 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

THE FIRST MAJOR FALL STORM WILL AFFECT WESTERN WYOMING OVER THE
NEXT FEW DAYS. SCATTERED TO NUMEROUS SHOWERS AND POSSIBLY A
THUNDERSTORM CAN BE EXPECTED OVER THE NEXT COUPLE OF DAYS. COLDER
AIR WILL GRADUALLY WORK INTO THE AREA TODAY...BUT SNOW LEVELS ARE
EXPECTED TO REMAIN ABOVE 10000 FEET. HOWEVER...TONIGHT SNOW LEVELS
ARE EXPECTED TO LOWER TO AROUND 8000 FEET...AND THEN COULD FALL TO
THE VALLEY FLOORS THURSDAY NIGHT. SIGNIFICANT MOUNTAIN SNOWFALL
COULD OCCUR WITH THIS STORM SYSTEM.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY (85 PERCENT). WIDELY SCATTERED RAIN
                    SHOWERS THEN NUMEROUS RAIN SHOWERS AND ISOLATED
                    THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....50-55 AT 7500 FT. 39-43 AT 9500 FEET.
MIN HUMIDITY........45 PERCENT AT 7500 FT. 65 PERCENT AT 9500 FEET.
20 FOOT WINDS.......SOUTH 5-10 MPH. GUSTS UP TO 15 MPH. GUSTY
                    AND ERRATIC WINDS TO 40 MPH EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTH 15-20 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.......3000-4000 FT AGL.
TRANSPORT WINDS.....SOUTH 15 TO 25 MPH.
SMOKE DISPERSAL.....FAIR TO GOOD.

.TONIGHT...
SKY/WEATHER.........CLOUDY (95-100 PERCENT). NUMEROUS RAIN AND SNOW
                    SHOWERS THROUGH THE NIGHT. ISOLATED THUNDERSTORMS
                    POSSIBLE IN THE EVENING.
MIN TEMPERATURE.....32-37.
MAX HUMIDITY........91-94 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
RIDGE TOP WINDS.....SOUTHEAST 10 TO 15 MPH.
LAL.................2 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.60 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1900 FT AGL.
TRANSPORT WINDS.....SOUTH SOUTHEAST 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR.

.THURSDAY...
SKY/WEATHER.........CLOUDY (95-100 PERCENT). NUMEROUS RAIN AND
                    SNOW SHOWERS. ISOLATED THUNDERSTORMS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....40-45 AT 7500 FEET. 30-35 AT 9500 FEET
MIN HUMIDITY........65-70 PERCENT.
20 FOOT WINDS.......LIGHT AND VARIABLE 3-6 MPH...BECOMING NORTHWEST
                    4-8 MPH AROUND 1500. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHEAST AROUND 10 MPH...BECOMING EAST NORTHEAST
                    5-10 MPH BY MIDDAY THEN SWITCHING TO THE
                    NORTHWEST LATE IN THE DAY.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.60 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1800-3000 FT AGL.
TRANSPORT WINDS.....SOUTHEAST AROUND 10 MPH...BECOMING EAST NORTHEAST
                    5-10 MPH BY MIDDAY THEN SWITCHING TO THE
                    NORTHWEST LATE IN THE DAY.
SMOKE DISPERSAL.....POOR.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...NUMEROUS SNOW SHOWERS. ISOLATED THUNDERSTORMS
POSSIBLE IN THE EVENING. LOWS IN THE UPPER 20S. WINDS GENERALLY LESS
THAN 10 MPH.

.FRIDAY...CLOUDY WITH NUMEROUS SNOW SHOWERS. LOWS IN THE MID 20S.
HIGHS IN THE MID 30S. WINDS GENERALLY LESS THAN 10 MPH.

.SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW
SHOWERS. LOWS IN THE MID 20S. HIGHS IN THE LOWER 40S. WINDS
GENERALLY LESS THAN 10 MPH.

.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW SHOWERS.
LOWS IN THE UPPER 20S. HIGHS IN THE MID 40S. WINDS GENERALLY LESS
THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...GREY HILLS FEMOS
REASON FOR REQUEST...WILDFIRE
.TAG 20111004.REDRO.01/RIW