FNUS75 KRIW 082056
FWSRIW

SPOT FORECAST FOR BROWN S SPRING...BLM RAD
NATIONAL WEATHER SERVICE RIVERTON WY
256 PM MDT SUN MAY 8 2011

FORECAST IS BASED ON IGNITION TIME OF 1450 MDT ON MAY 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
CLOUDS AND SHOWER ACTIVITY WILL INCREASE IN COVERAGE TONIGHT
AT AND AROUND THE BURN SITE AS A STORM SYSTEM CONTINUES TO
APPROACH THE AREA. WET CONDITIONS CAN BE EXPECTED MONDAY AND
TUESDAY AS THIS SYSTEM MAKES ITS WAY NORTH AND EASTWARD. BREEZY TO
WINDY CONDITIONS WILL PREVAIL UNTIL THE FIRST LOW PRESSURE SYSTEM
PASSES TUESDAY.

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

FORECASTER...BERC

.TONIGHT...
SKY/WEATHER.........CLOUDY (95-100 PERCENT). ISOLATED THUNDERSTORMS
                    EARLY IN THE EVENING. SCATTERED RAIN SHOWERS
                    THROUGH THE NIGHT. SCATTERED RAIN AND/OR SNOW
                    SHOWERS AFTER MIDNIGHT.
MIN TEMPERATURE.....34-38.
MAX HUMIDITY........79-85 PERCENT.
20 FOOT WINDS.......SOUTH SOUTHWEST WINDS AROUND 21 MPH WITH GUSTS TO
                    AROUND 40 MPH SHIFTING TO THE SOUTH 10 TO 16
                    MPH WITH GUSTS TO AROUND 30 MPH AFTER 9 PM
                    AND CONTINUING OVERNIGHT. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS EARLY IN THE
                    PERIOD.
RIDGE TOP WINDS.....SOUTHWEST AROUND 30 MPH SHIFTING TO THE SOUTH
                    20 TO 25 MPH AFTER 9 PM.
LAL.................2 UNTIL 9 PM...THEN 1.
CHC OF WETTING RAIN.20 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6700-7700 FT AGL DECREASING TO 1400-2200 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST AROUND 38 MPH BECOMING SOUTH 24 TO 31
                    MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....EXCELLENT (228100 KNOT-FT) DECREASING TO FAIR
                    (42800 KNOT-FT) AFTER MIDNIGHT.

.MONDAY...
SKY/WEATHER.........CLOUDY (90-100 PERCENT). NUMEROUS RAIN AND/OR
                    SNOW SHOWERS EARLY IN THE MORNING. NUMEROUS
                    RAIN SHOWERS THROUGH THE DAY.
                    ISOLATED THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....47-52.
MIN HUMIDITY........44-47 PERCENT.
20 FOOT WINDS.......SOUTH WINDS 15 TO 17 MPH SHIFTING TO THE WEST
                    LATE IN THE AFTERNOON. GUSTS UP TO 30 MPH
                    DECREASING TO 20 MPH LATE IN THE AFTERNOON.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTH 25 TO 30 MPH SHIFTING TO THE WEST AROUND
                    20 MPH LATE IN THE AFTERNOON.
LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.62 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2800-3800 FT AGL INCREASING TO 5200-5700 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 30 TO 33 MPH SHIFTING TO THE WEST AROUND
                    26 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....GOOD TO VERY GOOD (88100-136600 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...CLOUDY. SCATTERED SHOWERS...SNOW SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING...THEN SCATTERED SNOW
SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 20S. WEST WINDS AROUND
15 TO 20 MPH.
.TUESDAY...CLOUDY WITH NUMEROUS SHOWERS AND SNOW SHOWERS. LOWS IN
THE UPPER 20S. HIGHS IN THE MID 40S. WEST WINDS ABOUT 12 TO 17 MPH.
.WEDNESDAY...PARTLY CLOUDY. SCATTERED SHOWERS AND SNOW SHOWERS.
LOWS IN THE LOWER 30S. HIGHS IN THE UPPER 40S. NORTHWEST WINDS
AROUND 10 MPH.
.THURSDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER
50S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE LOWER
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BERC
REQUESTED BY...DUSTIN WIDMER
REASON FOR REQUEST...PRESCRIBED
.TAG 20110508.BROWN.01/RIW