FNUS75 KRIW 211754
FWSRIW

SPOT FORECAST FOR BRETECHE CREEK...IA CDC
NATIONAL WEATHER SERVICE RIVERTON WY
1154 AM MDT MON MAR 21 2011

FORECAST IS BASED ON IGNITION TIME OF 1200 MDT ON MARCH 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
WINDS WILL INCREASE THIS AFTERNOON AS A STORM SYSTEM APPROACHES THE
AREA. WINDS WILL BACK TO THE SOUTHWEST THEN TO THE WEST AS A COLD
FRONT REACHES THE AREA DURING THE MORNING HOURS TUESDAY. LOOK FOR
CLOUDS TO INCREASE THIS AFTERNOON WITH RAIN AND SNOW SHOWERS
BEGINNING LATER IN THE AFTERNOON. RAIN WILL BECOME ALL SNOW THIS
EVENING AND CONTINUE THROUGH THE NIGHT. WINDY CONDITIONS WITH
PERIODIC SNOW SHOWERS WILL CONTINUE THROUGH THE DAY
TUESDAY...TAPERING OFF IN THE AFTERNOON.



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

FORECASTER...BERC

.TODAY...
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) WITH A CHANCE OF
                    RAIN SHOWERS BEGINNING IN THE AFTERNOON. RAIN
                    WILL TURN TO SNOW AS THE EVENING GOES ON.
MAX TEMPERATURE.....44-47.
MIN HUMIDITY........22-25 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH
                    BECOMING SOUTHWESTERLY AT 10 YO 15 MPH WITH
                    GUSTS TO 25 MPH AFTER 4 PM.
RIDGE TOP WINDS.....SOUTH AT 10 TO 15 MPH BECOMING
                    SOUTHWEST AT 20 TO 30 MPH
LAL.................1
CHC OF WETTING RAIN.10 PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR
                    LARGE PLUME DOMINATED FIRE GROWTH.
MIXING HEIGHT.......7000 FT AGL DECREASING TO 4500 IN THE EVENING.
TRANSPORT WINDS.....SOUTH AT 10 TO 15 MPH BECOMING SOUTHWEST AT 25
                    TO 35 MPH.
SMOKE DISPERSAL.....GOOD.

.TONIGHT...
SKY/WEATHER.........CLOUDY (85-95 PERCENT). CHANCE OF SNOW IN THE EVENING...
                    THEN SNOW LIKELY AFTER MIDNIGHT.
MIN TEMPERATURE.....AROUND 30.
MAX HUMIDITY........63-66 PERCENT.
20 FOOT WINDS.......WEST WINDS 11 TO 19 MPH. GUSTS UP TO 25 MPH
                    INCREASING TO 35 MPH AFTER MIDNIGHT.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH INCREASING TO WEST
                    AROUND 25 MPH AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.12 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4800 FT AGL DECREASING TO 1800 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....WEST 21 TO 29 MPH.
SMOKE DISPERSAL.....FAIR TO GOOD (46500-85600 KNOT-FT).

.TUESDAY...
SKY/WEATHER.........CLOUDY (90-100 PERCENT). SNOW LIKELY IN THE
                    MORNING...THEN CHANCE OF RAIN AND SNOW IN THE
                    AFTERNOON.
MAX TEMPERATURE.....35-38.
MIN HUMIDITY........41-44 PERCENT.
20 FOOT WINDS.......WEST WINDS 17 TO 21 MPH WITH GUSTS TO AROUND 40
                    MPH.
RIDGE TOP WINDS.....WEST AROUND 30 MPH.
LAL.................1.
CHC OF WETTING RAIN.12 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2600 FT AGL INCREASING TO 5300 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....WEST 31 TO 33 MPH.
SMOKE DISPERSAL.....GOOD (71300 KNOT-FT) INCREASING TO EXCELLENT
                    (153600 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...MOSTLY CLOUDY. ISOLATED SNOW SHOWERS IN THE
EVENING. LOWS IN THE LOWER 20S. WEST WINDS AROUND 19 MPH.
.WEDNESDAY...PARTLY CLOUDY. LOWS IN THE MID 20S. HIGHS IN THE
LOWER 40S. WEST WINDS AROUND 10 MPH.
.THURSDAY...MOSTLY CLOUDY WITH SCATTERED SHOWERS AND SLIGHT
CHANCE OF SNOW. LOWS IN THE MID 20S. HIGHS IN THE LOWER 40S.
WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLOUDY WITH CHANCE OF SNOW AND SLIGHT CHANCE OF
RAIN. LOWS IN THE LOWER 20S. HIGHS IN THE LOWER 40S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BERC
REQUESTED BY...RXB2 MONONI
REASON FOR REQUEST...PRESCRIBED
.TAG 20110321.BRETE.01/RIW