FNUS75 KRIW 111550
FWSRIW

SPOT FORECAST FOR BILLY CREEK...BLM CAD
NATIONAL WEATHER SERVICE RIVERTON WY
950 AM MDT TUE MAY 11 2010

FORECAST IS BASED ON IGNITION TIME OF 0855 MDT ON MAY 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A STRONG LOW PRESSURE CENTER WILL TRACK EAST NORTHEAST
ACROSS SOUTHEAST WYOMING THROUGH WEDNESDAY. SNOW WILL DEVELOP
BY 1100 FROM THIS LOW. A CHANCE OF SNOW WILL CONTINUE THROUGH WEDNESDAY NIGHT.
A SLIGHT CHANCE OF PRECIPITATION WILL OCCUR THROUGH THE LATTER PORTION
OF THE WEEK WHEN A SECONDARY CIRCULATION ROTATES AROUND THE BACKSIDE OF
THE MAIN LOW ALONG WITH MOSTLY CLOUDY CONDITIONS...COOL AND RELATIVELY HIGH RH
CONTINUING.


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

FORECASTER...LIPSON

.TODAY...
SKY/WEATHER.........CLOUDY (95-100 PERCENT). SNOW DEVELOPING BY 1100
                    AND CONTINUING THROUGH THE DAY.
MAX TEMPERATURE.....33.
MIN HUMIDITY........RH INCREASING TO 80 TO 85 PERCENT THROUGH THE AFTERNOON.
WIND (20 FT)........WINDS VEERING TO THE EAST NORTHEAST WINDS AT 10 TO 14 MPH.
                    GUSTS UP TO 20 MPH INCREASING TO 25 MPH IN THE AFTERNOON.
RIDGE TOP WINDS.....NORTHEAST 20 TO 25 MPH.
MIXING HEIGHT.......1600-2600 FT AGL.
TRANSPORT WINDS.....NORTHEAST 16 TO 23 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (22300-50600 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........CLOUDY (95-100 PERCENT). SNOW.
MIN TEMPERATURE.....25.
MAX HUMIDITY........92-95 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 11 TO 15 MPH. GUSTS UP TO 25
                    MPH UNTIL EARLY MORNING.
RIDGE TOP WINDS.....NORTHEAST 25 TO 30 MPH DECREASING TO AROUND 20
                    MPH EARLY IN THE MORNING.
MIXING HEIGHT.......1600-2600 FT AGL.
TRANSPORT WINDS.....NORTHEAST 20 TO 26 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (30500-54200 KNOT-FT).

.WEDNESDAY...
SKY/WEATHER.........CLOUDY (95-100 PERCENT). SNOW IN THE
                    MORNING AND AFTERNOON.
MAX TEMPERATURE.....36.
MIN HUMIDITY........90-93 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 12 TO 17 MPH WITH GUSTS TO
                    AROUND 30 MPH.
RIDGE TOP WINDS.....NORTHEAST AROUND 30 MPH DECREASING TO AROUND 20
                    MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......1700-2700 FT AGL.
TRANSPORT WINDS.....NORTHEAST 22 TO 29 MPH.
SMOKE DISPERSAL.....POOR TO FAIR (34800-52900 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...CLOUDY WITH CHANCE OF SNOW. LOWS AROUND 30.
NORTH WINDS AROUND 10 MPH.
.THURSDAY...PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF
SNOW. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 40S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS...THUNDERSTORMS AND
SNOW SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE LOWER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 50S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...BOB BUHR
REASON FOR REQUEST...PRESCRIBED
.TAG 20100511.BILLY.01/RIW