FNUS75 KRIW 221426
FWSRIW

SPOT FORECAST FOR WASHAKIE ASPEN RX...IA CDC
NATIONAL WEATHER SERVICE RIVERTON WY
826 AM MDT THU MAR 22 2012

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON MARCH 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE WILL REMAIN IN PLACE TODAY OVER THE BURN AREA WITH
LIGHT SOUTHWEST FLOW ALOFT. A WARMING TREND CAN BE EXPECTED OVER
THE NEXT COUPLE DAYS. WIND WILL INCREASE FRIDAY MORNING WITH THE
APPROACH OF A PACIFIC TROUGH OF LOW PRESSURE. WITH DRY CONDITIONS
EXPECTED...RH VALUES WILL DECREASE WITH THE WARMER TEMPERATURES
AND INCREASE IN VENTILATION.


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

FORECASTER...BERC

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....54-57.
MIN HUMIDITY........18-25 PERCENT.
20 FOOT WINDS.......WEST WINDS 10 TO 11 MPH IN THE MORNING BECOMING
                    UPSLOPE/UPVALLEY 5-9 MPH AFTER 1 PM. GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1700-2700 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
SMOKE DISPERSAL.....POOR (30100-35300 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....36-39.
MAX HUMIDITY........55-58 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 9 TO 16 MPH. GUSTS UP TO 25 MPH
                    AFTER 2 AM.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH INCREASING TO AROUND 25 MPH
                    AFTER 2 AM.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1400-2400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 15 TO 21 MPH INCREASING TO AROUND 25
                    MPH AFTER 2 AM.
SMOKE DISPERSAL.....POOR (27100-35400 KNOT-FT).

.FRIDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....56-59.
MIN HUMIDITY........15-20 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 14 TO 19 MPH WITH GUSTS TO
                    AROUND 30 MPH.
RIDGE TOP WINDS.....SOUTHWEST 25 TO 30 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......1700-2700 FT AGL INCREASING TO 4100-5100 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 30 TO 35 MPH.
SMOKE DISPERSAL.....FAIR (45600 KNOT-FT) INCREASING TO VERY GOOD
                    (100600 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.FRIDAY NIGHT...PARTLY CLOUDY. LOWS IN THE UPPER 30S. SOUTHWEST
WINDS AROUND 13 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID
50S. SOUTHWEST WINDS AROUND 11 MPH.
.SUNDAY...PARTLY CLOUDY. LOWS AROUND 40. HIGHS IN THE UPPER 50S.
SOUTHWEST WINDS AROUND 17 MPH.
.MONDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS...SNOW SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS IN THE MID 20S. HIGHS IN THE LOWER
50S. SOUTHWEST WINDS AROUND 20 MPH.

$$

FORECASTER...BERC
REQUESTED BY...CDC
REASON FOR REQUEST...PRESCRIBED
.TAG 20120322.WASHA.01/RIW