FNUS75 KRIW 262358
FWSRIW

SPOT FORECAST FOR MIDDLE...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
558 PM MDT SUN SEP 26 2010

FORECAST IS BASED ON REQUEST TIME OF 1729 MDT ON SEPTEMBER 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

DRY AND WARM CONDITIONS WILL CONTINUE FOR THE NEXT FEW DAYS.
HOWEVER...WINDS ON MONDAY WILL BE WEAKER THAN WHAT OCCURRED AT THE
FIRE SITE TODAY. RELATIVE HUMIDITY RECOVERY TONIGHT IS EXPECTED TO
BE POOR...WITH AFTERNOON RH MONDAY DIPPING BACK DOWN TO AROUND 15
PERCENT.

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

FORECASTER...MURRELL

.TONIGHT...
SKY/WEATHER.........BECOMING PARTLY CLOUDY (40 PERCENT). HIGH CLOUDS.
MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........35-40 PERCENT.
20 FOOT WINDS.......WEST WINDS 10-15 MPH...BECOMING WEST NORTHWEST AROUND
                    10 MPH AROUND 2000...THEN BECOMING NORTHWEST 5-10 MPH
                    AROUND MIDNIGHT.  GUSTS TO 20 MPH THROUGH ABOUT 2000.
RIDGE TOP WINDS.....WEST AROUND 15 MPH...BECOMING NORTHWEST MPH BY 2000
                    DECREASING TO AROUND 10 MPH AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4500 FT AGL DECREASING TO 800 FT AGL
                    BY 2100.
TRANSPORT WINDS.....WEST 16 TO 17 MPH.
SMOKE DISPERSAL.....DECREASING TO POOR BY 2100.

.MONDAY...
SKY/WEATHER.........MOSTLY SUNNY (25 PERCENT). HIGH CLOUDS.
MAX TEMPERATURE.....70-75.
MIN HUMIDITY........13-17 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH BY 1000...THEN WEST
                    NORTHWEST 5-10 MPH BETWEEN NOON AND 1400.
RIDGE TOP WINDS.....WEST NORTHWEST AROUND 10 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1000 FT AGL INCREASING TO 4000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH.
SMOKE DISPERSAL.....POOR INCREASING TO FAIR IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.TUESDAY...CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS AROUND
70. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...ANGIE GAM
REASON FOR REQUEST...WILDFIRE
.TAG 20100926.MIDDL.01/RIW