FNUS75 KRIW 231143
FWSRIW

SPOT FORECAST FOR NORTH BUFFALO
NATIONAL WEATHER SERVICE RIVERTON WY
543 AM MDT SUN SEP 23 2012

FORECAST IS BASED ON REQUEST TIME OF 2001 MDT ON SEPTEMBER 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

THE PERSISTENT WARM AND VERY DRY PATTERN IS COMING TO AN END AS A WEAK
STORM SYSTEM OVER THE PACIFIC NORTHWEST TODAY SLOWLY PUSHES INTO
THE NORTHERN GREAT BASIN MONDAY...AND THEN ACROSS THE CENTRAL AND
SOUTHERN ROCKIES ON TUESDAY. THERE COULD BE AN ISOLATED SHOWER OR
THUNDERSTORM THIS AFTERNOON INTO TONIGHT...BUT THE BEST CHANCE FOR
SHOWERS AND THUNDERSTORMS WILL BE MONDAY AND TUESDAY...ALONG WITH
COOLER CONDITIONS. THIS SYSTEM IS RELATIVELY WARM...WITH ANY SNOW
CONFINED TO ELEVATIONS GENERALLY ABOVE 10000 FEET FOR THE DURATION
OF THE STORM. WINDS WILL BE VERY TRICKY OVER THE NEXT COUPLE OF
DAYS...WITH RELATIVELY LIGHT AND TERRAIN DRIVEN WINDS TODAY...BECOMING
PREDOMINATELY DOMINATED BY SHOWER AND THUNDERSTORM ACTIVITY ON MONDAY.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT) IN THE MORNING.
                    MOSTLY CLOUDY (80 PERCENT) WITH ISOLATED SHOWERS AND
                    THUNDERSTORMS IN THE AFTERNOON.

MAX TEMPERATURE.....70 AT  7500 FT.
                    58 AT 10000 FT.

MIN HUMIDITY........AROUND 20 PERCENT AT 7500 FT.
                    25-30 PERCENT AT 10000 FT.

20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....WEST SOUTHWEST 10-15 MPH BECOMING SOUTHWEST
                    5-10 MPH IN THE THE AFTERNOON.
LAL.................1 UNTIL NOON...THEN 2.
CHC OF WETTING RAIN.LESS THAN 5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY (75 PERCENT). ISOLATED
                    THUNDERSTORMS IN THE EVENING. ISOLATED RAIN
                    SHOWERS THROUGH THE NIGHT.
MIN TEMPERATURE.....40-45.
MAX HUMIDITY........70-75 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
RIDGE TOP WINDS.....SOUTH TO SOUTHEAST 5-10 MPH.
LAL.................2 UNTIL 9 PM...THEN 1.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.MONDAY...
SKY/WEATHER.........MOSTLY CLOUDY (85 PERCENT) WITH SCATTERED
                    SHOWERS AND ISOLATED THUNDERSTORMS.

MAX TEMPERATURE.....62 AT  7500 FT.
                    45 AT 10000 FT.

MIN HUMIDITY........40 PERCENT AT  7500 FT.
                    60 PERCENT AT 10000 FT.

20 FOOT WINDS.......VARIABLE 4-8 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR ANY THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTHWEST 5-10 MPH...BECOMING NORTHWEST IN THE
                    AFTERNOON.
LAL.................2.
CHC OF WETTING RAIN.25 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...

.MONDAY NIGHT...CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS IN THE EVENING...THEN SCATTERED SHOWERS AFTER
MIDNIGHT. LOWS IN THE UPPER 30S. WINDS GENERALLY LESS THAN
10 MPH.

.TUESDAY...MOSTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED
THUNDERSTORMS. HIGHS IN THE LOWER 60S AT 7500 FT...AND LOWER
40S AT 10000 FT. WINDS GENERALLY LESS THAN 10 MPH.

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

.THURSDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS IN
THE MID 30S. HIGHS AROUND 60. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...LOOKOUT
REASON FOR REQUEST...WILDFIRE
.TAG 20120922.NORTH.01/RIW