Suppression Forecast
Issued by NWS Riverton, WY

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000
FNUS75 KRIW 261120
FWSRIW

SPOT FORECAST FOR NE QUAD...BTNF
NATIONAL WEATHER SERVICE RIVERTON WY
520 AM MDT FRI SEP 26 2014

FORECAST IS BASED ON IGNITION TIME OF 0700 MDT ON SEPTEMBER 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...AN UPPER LEVEL LOW PRESSURE SYSTEM OFF THE WEST
COAST WILL MOVE INTO CENTRAL CALIFORNIA THIS EVENING AND DRIFT
EAST INTO THE WESTERN GREAT BASIN ON SATURDAY. CLEAR SKIES EARLY
THIS MORNING WILL GIVE WAY TO BUILDING CUMULUS IN THE MID TO LATE
MORNING WITH A FEW SHOWERS AND THUNDERSTORMS DEVELOPING IN THE
AFTERNOON. TEMPERATURES WILL TREND COOLER AND RELATIVE HUMIDITY
HIGHER...MINIMUM RH/S TODAY ARE NOT EXPECTED TO GO MUCH BELOW 30
PERCENT ESPECIALLY IF CLOUDS BUILD IN BY AFTERNOON. SHOWERS WILL
BECOME MORE WIDESPREAD OVER THE AREA BY SUNRISE ON SATURDAY WITH A
GOOD CHANCE OF WETTING RAIN DURING THE DAY...MINIMUM RELATIVE
HUMIDITY IS EXPECTED TO NOT BE MUCH LOWER THAN 50 PERCENT.

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

FORECASTER...MEUNIER

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT) THROUGH 0900...BECOMING
                    PARTLY CLOUDY Y (40-50 PERCENT) BY EARLY AFTERNOON.
                    ISOLATED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....71-74.
MIN HUMIDITY........29-32 PERCENT.

20 FOOT WINDS.......EAST 4-8 MPH THROUGH 0900...BECOMING SOUTHWEST
                    5-10 MPH. GUSTS 15-20 MPH IN THE AFTERNOON.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTH TO SOUTHWEST AROUND 15 MPH.

LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.10 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......1700-2700 FT AGL INCREASING TO 7400-8400 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH INCREASING TO AROUND
                    25 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (30600 KNOT-FT) INCREASING TO VERY GOOD (148000
                    KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT) THEN BECOMING
                    MOSTLY CLOUDY (60-70 PERCENT). ISOLATED RAIN
                    SHOWERS IN THE EVENING. ISOLATED THUNDERSTORMS
                    THROUGH THE NIGHT. SCATTERED RAIN SHOWERS AFTER
                    MIDNIGHT.
MIN TEMPERATURE.....43-46.
MAX HUMIDITY........86-89 PERCENT.

20 FOOT WINDS.......SOUTHWEST 5 TO 10 MPH WITH GUSTS NEAR 15 MPH UNTIL 1900...
                    BECOMING DOWNSLOPE/DOWNVALLEY OR EAST 4-8 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTHEAST 10 TO 15 MPH.

LAL.................3 UNTIL 2400...THEN 2.
CHC OF WETTING RAIN.25 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......4100-5100 FT AGL DECREASING TO 500-1300 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTH AROUND 15 MPH SHIFTING TO THE SOUTHEAST
                    10 TO 15 MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....GOOD (75300 KNOT-FT) DECREASING TO POOR (8700
                    KNOT-FT) AFTER MIDNIGHT.

.SATURDAY...
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). ISOLATED
                    THUNDERSTORMS IN THE MORNING. SCATTERED RAIN
                    SHOWERS THROUGH THE DAY. ISOLATED THUNDERSTORMS
                    IN THE AFTERNOON.
MAX TEMPERATURE.....62-65.
MIN HUMIDITY........51-54 PERCENT.

20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    MORNING. GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHEAST 10 TO 15 MPH.

LAL.................2.
CHC OF WETTING RAIN.40 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......1100-2100 FT AGL IN THE MORNING INCREASING TO
                    3500-4500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR (8800-17600 KNOT-FT)...INCREASING TO FAIR
                    (40000 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.SATURDAY NIGHT...NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS IN
THE EVENING...THEN CHANCE OF RAIN AFTER MIDNIGHT. LOWS AROUND 40.
WINDS GENERALLY LESS THAN 10 MPH.

.SUNDAY...CLOUDY WITH NUMEROUS SHOWERS AND ISOLATED
THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE UPPER 50S. WINDS
GENERALLY LESS THAN 10 MPH.

.MONDAY...MOSTLY CLOUDY WITH SHOWERS LIKELY WITH POSSIBLE SNOW
SHOWERS AND THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE
LOWER 50S. WINDS GENERALLY LESS THAN 10 MPH.

.TUESDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW SHOWERS.
LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S. WINDS GENERALLY
LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...STEVE MARKASON
REASON FOR REQUEST...PRESCRIBED
.TAG 20140925.NEQUA.01/RIW







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