Suppression Forecast
Issued by NWS Riverton, WY

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FNUS75 KRIW 241154
FWSRIW

SPOT FORECAST FOR FOUR BEAR PILE BURNING...BLM WOD
NATIONAL WEATHER SERVICE RIVERTON WY
454 AM MST TUE FEB 24 2015

FORECAST IS BASED ON IGNITION TIME OF 1400 MST ON FEBRUARY 24.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

GENERALLY DRY CONDITIONS EXPECTED OVER THE BURN SITE TODAY UNDER
THE PRESENCE OF A DRY NORTHWEST FLOW. THOUGH PRECIPITAION WILL
REMAIN GENERALLY QUIET...WIND WILL NOT REMAIN AS BENIGN. A
STRONGER PUSH OF NORTHWEST FLOW WILL MOVE OVER THE AREA THIS
AFTERNOON...HELPING TO INCREASE OVERALL WIND SPEEDS. THESE WIND
CHANGES WILL CONTINUE THROUGH WEDNESDAY...WHICH WILL HAVE
SIGNIFCANT INFLUENCES ON SMOKE DISPERSALS FOR THE NEXT COUPLE DAYS.
EXPECT SMOKE DISPERSALS TO INCREASE THROUGH THE DAY AND REMAIN
ELEVATED THROUGH WEDNESDAY. THE NEXT OPPORTUNITY FOR SHOWER
ACTIVITY WILL BE OVERNIGHT AND INTO WEDNESDAY AS A SURGE OF
MOISTURE MOVES SOUTH OVER THE BURN SITE.

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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) FOR MUCH OF THE
                    DAY...WITH A PERIOD OF CLEARING SKIES FAVORABLE
                    BETWEEN 0800 AND 1100.
MAX TEMPERATURE.....42-46.
MIN HUMIDITY........28-31 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST 13 TO 22
                    MPH WITH GUSTS TO AROUND 40 MPH BY 1200.
RIDGE TOP WINDS.....NORTHWEST 10 TO 15 MPH INCREASING TO WEST
                    20 TO 25 MPH BY 1400.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......200 FT AGL INCREASING TO 3000 FT AGL BY 1300.
TRANSPORT WINDS.....NORTHWEST 10 TO 17 MPH INCREASING TO WEST
                    AROUND 30 MPH BY 1400.
SMOKE DISPERSAL.....POOR (1500 KNOT-FT) INCREASING TO GOOD (61500
                    KNOT-FT) BETWEEN 1400 AND 1500.

.TONIGHT...
SKY/WEATHER.........BECOMING MOSTLY CLOUDY (60-70 PERCENT) BY 2400.
                    SLIGHT CHANCE OF SNOW AFTER 2400.
MIN TEMPERATURE.....16-20.
MAX HUMIDITY........67-70 PERCENT.
20 FOOT WINDS.......WEST WINDS 20 TO 25 MPH WITH GUSTS AS HIGH AS
                    45 MPH.
RIDGE TOP WINDS.....WEST 32 TO 37 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO AROUND 1800 FT AGL.
TRANSPORT WINDS.....WEST 35 TO 40 MPH.
SMOKE DISPERSAL.....GOOD TO VERY GOOD (86300-108500 KNOT-FT).

.WEDNESDAY...
SKY/WEATHER.........CLOUDY (95-100 PERCENT). SNOW EXPECTED
                    THROUGHOUT THE DAY.
MAX TEMPERATURE.....25-29.
MIN HUMIDITY........42-47 PERCENT.
20 FOOT WINDS.......NORTHWEST WINDS 12 TO 17 MPH WITH GUSTS TO
                    AROUND 35 MPH IN THE MORNING.
RIDGE TOP WINDS.....NORTHWEST 25 TO 30 MPH DECREASING TO AROUND
                    15 MPH BY 1100...THEN SHIFTING TO THE
                    NORTHEAST BY 1400.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO AROUND 4000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 26 TO 32 MPH BECOMING NORTH 10 TO 16
                    MPH BY 1400.
SMOKE DISPERSAL.....VERY GOOD (147800 KNOT-FT) DECREASING TO GOOD
                    (63900 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...COLDER. SNOW IN THE EVENING...THEN CHANCE OF
SNOW AFTER MIDNIGHT. LOWS AROUND 5. WINDS GENERALLY LESS THAN
10 MPH.

.THURSDAY...MOSTLY CLOUDY WITH CHANCE OF SNOW. LOWS AROUND 1.
HIGHS AROUND 17. WINDS GENERALLY LESS THAN 10 MPH.

.FRIDAY...MOSTLY CLOUDY. CHANCE OF SNOW. LOWS AROUND 5. HIGHS IN
THE LOWER 20S. WINDS GENERALLY LESS THAN 10 MPH.

.SATURDAY...CLOUDY WITH CHANCE OF SNOW. LOWS AROUND 4. HIGHS
AROUND 16. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...MIKE WENGERT
REASON FOR REQUEST...PRESCRIBED
.TAG 20150224.FOURB.01/RIW






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