FNUS75 KRIW 241218
FWSRIW

SPOT FORECAST FOR COAL FIRE...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
618 AM MDT SAT JUL 24 2010

FORECAST IS BASED ON REQUEST TIME OF 2143 MDT ON JULY 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

SUNNY AND WARM CONDITIONS ARE EXPECTED THROUGH SUNDAY. WINDS WILL
MAINLY BE LIGHT AND TERRAIN DRIVEN THROUGH TONIGHT. WINDS WILL BE
SLIGHTLY STRONGER OUT OF THE WEST ON SUNDAY. MONSOONAL MOISTURE
IS EXPECTED TO SURGE NORTHWARD TUESDAY AND WEDNESDAY WITH A DECENT
SHOT AT RECEIVING SOME RAINFALL OVER THE FIRE SITE...ESPECIALLY ON
WEDNESDAY.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....73-77.
MIN HUMIDITY........18-22 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 4-8 MPH. GUSTS UP TO 15 MPH.
RIDGE TOP WINDS.....EAST AROUND 10 MPH...BECOMING SOUTH AROUND 5 MPH
                    BY NOON...AND SHIFTING TO THE WEST 5-10 MPH BY 1500.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2500 FT AGL INCREASING TO 8000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....EAST AROUND 10 MPH...BECOMING SOUTH AROUND 5 MPH
                    BY NOON...AND SHIFTING TO THE WEST 5-10 MPH BY 1500.
SMOKE DISPERSAL.....POOR INCREASING TO FAIR (25500-48000 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....50-55.
MAX HUMIDITY........AROUND 40 PERCENT.
WIND (20 FT)........DOWNSLOPE/DOWNVALLEY 3-6 MPH.
RIDGE TOP WINDS.....NORTHWEST 5-10 MPH...BECOMING LIGHT AND VARIABLE
                    AFTER MIDNIGHT.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6000 FT AGL DECREASING TO 800 FT AGL
                    BY MIDNIGHT.
TRANSPORT WINDS.....NORTHWEST 5-10 MPH...BECOMING LIGHT AND VARIABLE
                    AFTER MIDNIGHT.
SMOKE DISPERSAL.....FAIR (48000 KNOT-FT) DECREASING TO POOR (14800
                    KNOT-FT) BY MIDNIGHT.

.SUNDAY...
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....74-78.
MIN HUMIDITY........12-16 PERCENT.
WIND (20 FT)........UPSLOPE/UPVALLEY 4-8 MPH...BECOMING WEST 5-10 MPH
                    BETWEEN NOON AND 1400. GUSTS TO 18 MPH IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 5-10 MPH...BECOMING WEST NORTHWEST 10-15
                    MPH BY 1500.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2500 FT AGL INCREASING TO 9000 FT AGL IN
                    THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 5-10 MPH...BECOMING WEST NORTHWEST AROUND
                    10 MPH BY 1500.
SMOKE DISPERSAL.....POOR (17500 KNOT-FT) INCREASING TO GOOD
                    (90000 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.SUNDAY NIGHT...MOSTLY CLEAR. LOWS IN THE LOWER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
.MONDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 70S.
WEST TO SOUTHWEST WINDS 10-15 MPH IN THE AFTERNOON.
.TUESDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH...EXCEPT NEAR THUNDERSTORMS.
.WEDNESDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS AROUND 50. HIGHS IN THE UPPER 60S. WINDS
GENERALLY LESS THAN 10 MPH...EXCEPT NEAR THUNDERSTORMS.

$$

FORECASTER...MURRELL
REQUESTED BY...LANCASTER
REASON FOR REQUEST...WILDFIRE
.TAG 20100723.COALF.01/RIW