990
FNUS75 KRIW 291713
FWSRIW
SPOT FORECAST FOR BILLY CREEK...BLM CAD
NATIONAL WEATHER SERVICE RIVERTON WY
1113 AM MDT THU OCT 29 2009
FORECAST IS BASED ON IGNITION TIME OF 1115 MDT ON OCTOBER 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
CLOUDS WILL GRADUALLY DISSIPATE THIS AFTERNOON AS THE STORM SYSTEM
MOVES EAST. THERE COULD BE A SNOW SHOWER OR TWO...BUT WOULD BE
LIGHT AND BRIEF. OTHERWISE...WILL BE UNDER NORTHWEST FLOW DURING
THE NEXT FEW DAYS. WINDS WILL LIKELY INCREASE OVERNIGHT AS THE
NEXT SYSTEM APPROACHES. THE WINDS WILL INCREASE FURTHER FRIDAY
AFTERNOON...THEN DIMINISH LATE FRIDAY NIGHT. CLOUDS WILL ALSO BE ON THE
INCREASE TONIGHT THROUGH FRIDAY.
..THUNDERSTORMS IMPLY STRONG GUSTY AND ERRATIC WINDS
..HAINES INDEX IS HIGH LEVEL HAINES BOTH DAY AND NIGHT
FORECASTER...T.BAKER
TODAY
SKY/WEATHER.........DISSIPATING CLOUDS (40-50 PERCENT). SLIGHT CHANCE OF
SNOW SHOWERS.
MAX TEMPERATURE.....25-28.
MIN HUMIDITY........45-50 PERCENT.
20 FOOT WINDS.......NORTHWEST TO NORTH WINDS 4 TO 8 MPH WITH GUSTS 12 MPH.
RIDGE TOP WINDS.....NORTHWEST TO NORTH 7 TO 12 MPH.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1500 FT AGL.
TRANSPORT WINDS.....NORTH 15 MPH.
SMOKE DISPERSAL.....POOR (30000 KNOT-FT).
TONIGHT
SKY/WEATHER.........INCREASING CLOUDS (70-80 PERCENT).
MIN TEMPERATURE.....AROUND 20.
MAX HUMIDITY........65-75 PERCENT.
20 FOOT WINDS.......NORTHWEST TO NORTH WINDS 4 TO 8 MPH WITH GUSTS 12 MPH.
INCREASING TO 10-15 MPH GUSTS TO 20 MPH AROUND MIDNIGHT.
RIDGE TOP WINDS.....NORTHWEST TO NORTH 7 TO 12 MPH. INCREASING TO 12-18 MPH
GUSTS TO 25 MPH AFTER MIDNIGHT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
MIXING HEIGHT.......700 FT AGL.
TRANSPORT WINDS.....NORTHWEST 15 MPH.
SMOKE DISPERSAL.....POOR (10500 KNOT-FT).
FRIDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
PARTLY CLOUDY (50-60 PERCENT).
MAX TEMPERATURE.....AROUND 40.
MIN HUMIDITY........35-38 PERCENT.
20 FOOT WINDS.......NORTHWEST 10-15 MPH GUSTS TO 20 MPH...
INCREASING TO 12 TO 16 MPH GUSTS TO 25 MPH AFTER NOON.
RIDGE TOP WINDS.....NORTHWEST 12-18 MPH GUSTS TO 25 MPH...
INCREASING TO 15 TO 20 MPH GUSTS TO 30 MPH AFTER NOON.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 25 MPH.
SMOKE DISPERSAL.....FAIR (50000 KNOT-FT).
FORECAST DAYS 3 THROUGH 5
FRIDAY NIGHT
NOT AS COLD. PARTLY CLOUDY. SLIGHT CHANCE OF RAIN
AND SNOW IN THE EVENING...THEN SLIGHT CHANCE OF SNOW AFTER
MIDNIGHT. LOWS IN THE LOWER 30S. NORTHWEST WINDS 10-15 MPH.
SATURDAY
PARTLY CLOUDY. LOWS IN THE UPPER 20S. HIGHS IN THE
MID 40S. NORTHWEST WINDS AROUND 12-18 MPH GUSTS TO 30 MPH.
SUNDAY
PARTLY CLOUDY WITH SLIGHT CHANCE OF RAIN AND SNOW. LOWS
IN THE MID 20S. HIGHS IN THE UPPER 30S. NORTHWEST WINDS AROUND 12-18 MPH
GUSTS TO 30 MPH.
MONDAY
PARTLY CLOUDY. LOWS AROUND 30. HIGHS IN THE LOWER 40S.
WINDS GENERALLY LESS THAN 10 MPH.
FORECASTER...T.BAKER
REQUESTED BY...LUKE FORTNER
REASON FOR REQUEST...PRESCRIBED
.TAG 20091029.BILLY.01/RIW
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