Suppression Forecast
Issued by NWS Riverton, WY

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FNUS75 KRIW 302219
FWSRIW

SPOT FORECAST FOR GRAY REEF...BLM
NATIONAL WEATHER SERVICE RIVERTON WY
419 PM MDT SUN AUG 30 2015

FORECAST IS BASED ON IGNITION TIME OF 1233 MDT ON AUGUST 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING...

.DISCUSSION...WIDELY SCATTERED THUNDERSTORMS WILL CONTINUE TO
TRACK NORTHEAST ACROSS THE AREA THIS EVENING AHEAD OF A COLD
FRONT. THE STRONGEST STORM ON RADAR WAS IN NORTHEAST SWEETWATER
COUNTY AT 4 PM...AND WILL MOVE ACROSS THE AREA BETWEEN 520 PM AND
540 PM. WEAKER STORMS MAY PUSH ACROSS THE AREA AHEAD OF THIS
STORM. THE MAIN HAZARDS WILL BE WIND GUSTS OVER 40 MPH AND
FREQUENT LIGHTNING. THUNDERSTORM ACTIVITY SHOULD PUSH MOSTLY SOUTH
AND EAST OF THE AREA AROUND MIDNIGHT...BUT SOUTHWEST WIND WILL
REMAIN GUSTY AHEAD OF A COLD FRONT THROUGH EARLY MONDAY MORNING.
THE COLD FRONT WILL PUSH SOUTH ACROSS THE AREA BETWEEN 3 AM AND 6
AM MONDAY MORNING WITH WINDS SHIFTING LIGHT NORTH TO NORTHEAST.
ISOLATED THUNDERSTORMS WILL CLIP THE AREA FROM THE SOUTH MONDAY
AFTERNOON.

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

FORECASTER...MEUNIER
SKY/WEATHER.........MOSTLY CLOUDY (85-100 PERCENT) WITH
                    WIDELY SCATTERED THUNDERSTORMS.
TEMPERATURES REST OF AFTERNOON.....68-73.
MIN HUMIDITY........AROUND 20 PERCENT.
20 FOOT WINDS.......PREVAILING SOUTHWEST 15 TO 20 MPH WITH GUSTS NEAR 30 MPH.
                    ERRATIC OUTFLOW WIND GUSTS OVER 40 MPH FROM
                    THUNDERSTORMS...WITH THUNDERSTORM DRIVEN WINDS BECOMING
                    INCREASINGLY DOMINANT THROUGH THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST AROUND 25 MPH.
LAL.................3.
CHC OF WETTING RAIN.15 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......11200 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 25 TO 30 MPH.
SMOKE DISPERSAL.....EXCELLENT (256100 KNOT-FT).

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY (85-100 PERCENT) IN THE EVENING WITH
                    WIDELY SCATTERED THUNDERSTORMS.  BECOMING
                    PARTLY CLOUDY (35-45 PERCENT) AFTER MIDNIGHT.
MIN TEMPERATURE.....56-59.
MAX HUMIDITY........62-65 PERCENT.
20 FOOT WINDS.......SOUTHWEST 15 TO 20 MPH WITH GUSTS NEAR 30 MPH
                    THROUGH 8 PM...VARIABLE THUNDERSTORM OUTFLOW WINDS
                    LIKELY TO BE DOMINANT THROUGH 8 PM WITH GUSTS OF 40 MPH
                    OR HIGHER.  SOUTHWEST WINDS DECREASING TO 10 TO 15 MPH
                    WITH GUSTS TO 25 MPH LATE EVENING...SHIFTING
                    TO THE NORTHEAST 4-8 MPH BETWEEN 0300 AND 0600 MONDAY.
RIDGE TOP WINDS.....SOUTHWEST 25 TO 30 MPH DECREASING TO AROUND 20
                    MPH EARLY IN THE MORNING.
LAL.................3 UNTIL 2100...THEN 2 UNTIL 2400...THEN 1.
CHC OF WETTING RAIN.10 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......5800-6800 FT AGL DECREASING TO 600-1400 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST AROUND 25 MPH.
SMOKE DISPERSAL.....VERY GOOD (142800 KNOT-FT) DECREASING TO POOR
                    (19000 KNOT-FT) AFTER MIDNIGHT.

.MONDAY...

SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). ISOLATED AFTERNOON
                    THUNDERSTORMS.
MAX TEMPERATURE.....83-86.
MIN HUMIDITY........AROUND 20 PERCENT.
20 FOOT WINDS.......NORTHEAST 4 TO 8 MPH THROUGH 0800...THEN BECOMING
                    SOUTHWEST 5 TO 10 MPH...GUSTING TO 15 MPH IN THE
                    AFTERNOON.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH SHIFTING TO THE SOUTHWEST
                    AROUND 20 MPH LATE IN THE AFTERNOON.
LAL.................1 THROUGH 1400...THEN 2.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1800-2800 FT AGL INCREASING TO 8000-9000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH IN THE MORNING...INCREASING
                    TO 15 TO 20 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (20700 KNOT-FT) INCREASING TO VERY GOOD
                    (124100 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...
PARTLY CLOUDY WITH ISOLATED THUNDERSTORMS EARLY EVENING...THEN MOSTLY CLEAR.
LOWS IN THE MID 50S. WINDS GENERALLY LESS THAN 10 MPH.

.TUESDAY...
MOSTLY CLEAR. HIGHS IN THE MID 80S. WINDS GENERALLY LESS THAN 10 MPH.

.WEDNESDAY...
PARTLY CLOUDY. LOWS IN THE UPPER 50S. HIGHS IN THE MID 80S.
SOUTHWEST WINDS 10 TO 20 MPH.

.THURSDAY...
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE LOWER 80S.
SOUTHWEST WINDS AROUND 11 MPH.

$$
FORECASTER...MEUNIER
REQUESTED BY...ADAM SPAULDING
TYPE OF REQUEST...PRESCRIBED
.TAG 20150830.GRAYR.01/RIW


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