FNUS75 KRIW 212317
FWSRIW

SPOT FORECAST FOR COAL FIRE...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
517 PM MDT WED JUL 21 2010

FORECAST IS BASED ON REQUEST TIME OF 1634 MDT ON JULY 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...ISOLATED THUNDERSTORMS WILL OCCUR UNTIL MIDNIGHT. THEN
CLOUDS WILL DECREASE BY MORNING. THURSDAY AND FRIDAY LOOK DRY WITH
WARMING TEMPERATURES AND LOWERING RELATIVE HUMIDITY.

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

FORECASTER...AR

.TONIGHT...
SKY/WEATHER.........MOSTLY CLOUDY UNTIL MIDNIGHT. ISOLATED
                    SHOWERS AND THUNDERSTORMS UNTIL MIDNIGHT.
                    THEN PARTLY CLOUDY.
MIN TEMPERATURE.....50-55.
MAX HUMIDITY........55-60 PERCENT.
WIND (20 FT)........SOUTHWEST WIND 12 TO 17 MPH WITH GUSTS TO 25 MPH
                    UNTIL SUNSET. THEN WEST TO SOUTHWEST AT 8 TO 12 MPH
                    WITH GUSTS AROUND 15 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
                    IN THE EVENING.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH WITH GUSTS TO 30 MPH UNTIL SUNSET.
                    WEST TO SOUTHWEST AT 10 TO 15 MPH WITH GUSTS TO 20 MPH.
LAL.................2 UNTIL 2400...THEN 1.
CWR.................10 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5000 FT AGL...DECREASING TO 1500 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST AROUND 25 MPH UNTIL SUNSET...THEN
                    SOUTHWEST AT 15 MPH.
SMOKE DISPERSAL.....VERY GOOD...DECREASING TO POOR AFTER MIDNIGHT.

.THURSDAY...
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....70-75.
MIN HUMIDITY........17-22 PERCENT.
WIND (20 FT)........WEST AT 5 TO 9 MPH...BECOMING WEST 13 TO 18 MPH
                    WITH GUSTS TO AROUND 23 MPH AFTER 12 PM.
RIDGE TOP WINDS.....WEST AT 8 TO 12 MPH...BECOMING WEST AT 16 TO 21 MPH
                    WITH GUSTS AROUND 25 MPH AFTER 12 PM.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 7000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST AROUND 20 MPH BY 12 PM.
SMOKE DISPERSAL.....POOR INCREASING TO VERY GOOD AFTER 12 PM.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...MOSTLY CLEAR. LOWS AROUND 50. WINDS GENERALLY
LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER
70S. NORTHWEST WINDS AROUND 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID
70S. NORTHWEST WINDS AROUND 10 MPH.
.SUNDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE MID 70S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...ROSS
REQUESTED BY...DWAYNE GIBBONS
REASON FOR REQUEST...WILDFIRE
.TAG 20100721.COALF.01/RIW