FNUS75 KRIW 302015
FWSRIW

SPOT FORECAST FOR ROCK CREEK...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
215 PM MDT SUN SEP 30 2012

FORECAST IS BASED ON REQUEST TIME OF 1014 MDT ON SEPTEMBER 30.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

DRY NORTHWEST FLOW WILL KEEP GENERALLY BENIGN CONDITIONS OVER THE
FIRE FOR THE NEXT COUPLE OF DAYS. A WEAK DISTURBANCE MAY INCREASE
WIND SPEED OVER THE FIRE THIS EVENING...THOUGH LIGHT WIND IS
EXPECTED TO RETURN DURING THE OVERNIGHT HOURS. MORNING INVERSIONS
OVER THE FIRE WILL BE POSSIBLE FOR THE NEXT COUPLE OF
MORNINGS...WHICH MAY INHIBIT SMOKE DISPERSAL IN THE MORNING HOURS.
INVERSIONS ARE EXPECTED TO LIFT DURING THE MID TO LATE MORNING
HOURS. WEATHER EXPECTED TO BE FAIRLY SIMILAR ON MONDAY AS WHAT IS
EXPERIENCED TODAY. THOUGH FURTHER INTO THE FORECAST PERIOD...WITH
INCREASED UNCERTAINTY...THE NEXT OPPORTUNITY FOR SHOWER ACTIVITY
APPEARS TO BE WEDNESDAY EVENING AS AN AREA OF LOW PRESSURE MOVES
TOWARDS NORTHEASTERN WYOMING.

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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT).
MAX TEMPERATURE.....69-72.
MIN HUMIDITY........24-27 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....NORTHWEST 5-10...INCREASING TO 15-20 MPH BY
                    1600.
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 6500-7500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 13 TO 21 MPH.
SMOKE DISPERSAL.....POOR (10700 KNOT-FT) INCREASING TO GOOD (75300
                    KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....35-38.
MAX HUMIDITY........72-75 PERCENT.
20 FOOT WINDS.......NORTHWEST WINDS 5-9 MPH WITH GUSTS TO
                    AROUND 15 MPH...BECOMING DOWNSLOPE/DOWNVALLEY
                    4-7 MPH BY 2200.
RIDGE TOP WINDS.....NORTHWEST 15 TO 20 MPH DECREASING TO 8 TO 12
                    MPH AFTER 0100.
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 2400-3400 FT AGL BY 0300.
TRANSPORT WINDS.....NORTHWEST 12 TO 21 MPH.
SMOKE DISPERSAL.....GOOD (91300 KNOT-FT) DECREASING TO POOR (20900
                    KNOT-FT) AFTER MIDNIGHT.

.MONDAY...
SKY/WEATHER.........SUNNY (0-5 PERCENT).
MAX TEMPERATURE.....69-73.
MIN HUMIDITY........24-27 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....SOUTHEAST 4-8 MPH SHIFTING TO THE WEST
                    BY 1500.
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 5500-6500 FT AGL BY 1400.
TRANSPORT WINDS.....SOUTHEAST 12 TO 14 MPH SHIFTING TO THE WEST
                    AROUND 16 MPH BY 1500.
SMOKE DISPERSAL.....POOR (27200 KNOT-FT) INCREASING TO GOOD (78200
                    KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...CLEAR. LOWS IN THE MID 30S. WINDS GENERALLY LESS
THAN 10 MPH.

.TUESDAY...CLEAR. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.

.WEDNESDAY...COOLER. PARTLY CLOUDY WITH SLIGHT CHANCE OF SNOW AND
ISOLATED SHOWERS. LOWS IN THE LOWER 20S. HIGHS IN THE LOWER 50S.
WINDS GENERALLY LESS THAN 10 MPH.

.THURSDAY...MOSTLY CLEAR. LOWS IN THE LOWER 20S. HIGHS IN THE MID
50S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...LOOKOUT
REASON FOR REQUEST...WILDFIRE
.TAG 20120930.ROCKC.01/RIW