FNUS75 KRIW 161206
FWSRIW

SPOT FORECAST FOR CYGNET  WILDFIRE...YELLOWSTONE NP/DOI
NATIONAL WEATHER SERVICE RIVERTON WY
606 AM MDT SUN SEP 16 2012

FORECAST IS BASED ON REQUEST TIME OF 2117 MDT ON SEPTEMBER 15.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A WEATHER SYSTEM WILL MOVE THROUGH THE FIRE AREA
AFTER 0900 BRINGING CLOUDS AND A CHANCE OF RAIN SHOWERS BY 1200.
COOLER TEMPERATURES TODAY AND HIGHER RELATIVE HUMIDITY WILL OCCUR.
SHOWERS WILL END AROUND SUNSET WITH CLOUDS DECREASING LATE TONIGHT.
MONDAY WILL SEE DRY CONDITIONS WITH LIGHT WIND AND LOWER
HUMIDITY THAN TODAY.

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

FORECASTER...AR

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0900...THEN BECOMING
                    MOSTLY CLOUDY BY 1100.  SLIGHT CHANCE OF SHOWERS.
                    ISOLATED THUNDERSTORM POSSIBLE FROM 1200 TO 1800.
MAX TEMPERATURE.....55-60.
MIN HUMIDITY........25-30 PERCENT...HUMIDITY INCREASING DURING THE
                    AFTERNOON DUE TO SHOWER ACTIVITY.

20 FOOT WINDS.......WEST TO NORTHWEST AT 5 TO 8 MPH UNTIL 1000.
                    NORTH TO NORTHWEST AT 6 TO 10 MPH AFTER 1000.

RIDGE TOP WINDS.....WEST TO NORTHWEST AT 6 TO 10 MPH UNTIL 1000.
                    NORTH TO NORTHWEST AT 10 TO 15 MPH AFTER 1000.

LAL.................1 UNTIL 1200...THEN 2.
CHC OF WETTING RAIN.8 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 6000-7000 FT AGL BY AFTERNOON.
TRANSPORT WINDS.....WEST TO NORTHWEST AT 10 TO 15 MPH UNTIL 1100.
                    WEST TO NORTHWEST AT 15 TO 20 MPH AFTER 1100.
SMOKE DISPERSAL.....FAIR...INCREASING TO VERY GOOD BY 1400.

.TONIGHT...
SKY/WEATHER.........ISOLATED SHOWERS UNTIL SUNSET...THEN DECREASING
                    CLOUDS AFTER MIDNIGHT.
MIN TEMPERATURE.....25-30.
MAX HUMIDITY........87-92 PERCENT.

20 FOOT WINDS.......NORTH TO NORTHWEST AT 4 TO 7 MPH UNTIL SUNSET...
                    THEN WIND BECOMING DOWNSLOPE/DOWNVALLEY AT
                    4 TO 7 MPH.

RIDGE TOP WINDS.....NORTH TO NORTHWEST AT 15 MPH UNTIL SUNSET...
                    BECOMING NORTH TO NORTHWEST AT 5 TO 10 MPH BY
                    MIDNIGHT.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 500-1500 FT AGL AFTER MIDNIGHT.
TRANSPORT WINDS.....NORTH TO NORTHWEST AT AROUND 15 MPH UNTIL SUNSET.
                    NORTH TO NORTHWEST AT 5 TO 10 MPH BY MIDNIGHT.
SMOKE DISPERSAL.....GOOD...DECREASING TO POOR AROUND MIDNIGHT.

.MONDAY...
SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....59-64.
MIN HUMIDITY........22-27 PERCENT.

20 FOOT WINDS.......UPSLOPE/UPVALLEY AT 5 TO 8 MPH UNTIL 1200.
                    NORTHWEST AT 6 TO 9 MPH AFTER 1200.

RIDGE TOP WINDS.....NORTH TO NORTHWEST AT 7 TO 12 MPH UNTIL 1200.
                    NORTH TO NORTHWEST AT 10 TO 15 MPH AFTER 1200.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 4500-5500 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....NORTH TO NORTHWEST AT 10 TO 15 MPH BY 1200.
SMOKE DISPERSAL.....POOR...INCREASING TO GOOD BY 1400.

.FORECAST DAYS 3 THROUGH 5...

.MONDAY NIGHT...CLEAR. LOWS 25 TO 30.
WINDS GENERALLY LESS THAN 10 MPH.

.TUESDAY...CLEAR. HIGHS IN THE MID 60S.
WEST WINDS GENERALLY LESS THAN 10 MPH.

.WEDNESDAY...MOSTLY CLEAR. LOWS 28 TO 33. HIGHS IN THE MID 60S.
WEST TO NORTHWEST WINDS GENERALLY LESS THAN 10 MPH.

.THURSDAY...MOSTLY CLEAR. LOWS 29 TO 34. HIGHS IN THE UPPER 60S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...ROSS
REQUESTED BY...LAURA DOOLEY
REASON FOR REQUEST...WILDFIRE
.TAG 20120915.CYGNE.01/RIW