FNUS75 KRIW 041819
FWSRIW

SPOT FORECAST FOR RED ROCK...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
1219 PM MDT SUN SEP 4 2011

FORECAST IS BASED ON REQUEST TIME OF 1156 MDT ON SEPTEMBER 04.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...WARM AND DRY CONDITIONS WILL CONTINUE AGAIN TODAY.
WINDS WILL MAINLY BE LIGHT AND TERRAIN DRIVEN...AND MIN RH SLIGHTLY
LOWER THAN WHAT OCCURRED YESTERDAY. SOME MOISTURE WILL BEGIN TO SURGE
NORTHWARD MONDAY AHEAD OF A WEAK DISTURBANCE THAT WILL AFFECT THE REGION
MONDAY NIGHT AND TUESDAY. AS A RESULT SOME INCREASE IN CLOUD
COVER IS EXPECTED MONDAY AFTERNOON ALONG WITH ISOLATED THUNDERSTORMS
BY TUESDAY AFTERNOON.

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

FORECASTER...LIPSON

.REST OF TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....65.
MIN HUMIDITY........21 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH FROM THE NORTH. GUSTS UP TO 15 MPH
                    LATE IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......6200-7200 FT AGL.
TRANSPORT WINDS.....WEST 13 TO 16 MPH.
SMOKE DISPERSAL.....GOOD (69400 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....32-35.
MAX HUMIDITY........61-64 PERCENT.
20 FOOT WINDS.......DOWNSLOPE FROM THE SOUTHWEST 4-7 MPH. A FEW GUSTS UP TO 15
                    MPH.
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......4500-5500 FT AGL DECREASING TO 200-700 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTH 13 TO 16 MPH.
SMOKE DISPERSAL.....GOOD (65600 KNOT-FT) DECREASING TO POOR (5500
                    KNOT-FT) AFTER MIDNIGHT.

.LABOR DAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT) THEN BECOMING PARTLY
                    CLOUDY (40-50 PERCENT).
MAX TEMPERATURE.....AROUND 67.
MIN HUMIDITY........18 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH FROM THE NORTH BECOMING NORTHWEST
                    AROUND 11 MPH BY 1700 WITH HIGHER GUSTS.
RIDGE TOP WINDS.....SOUTH 5 TO 10 MPH SHIFTING TO THE WEST 10 TO 15
                    MPH IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2900-3900 FT AGL INCREASING TO 9100-10100 FT
                    AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 10 TO 13 MPH SHIFTING TO THE WEST 13 TO
                    21 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (17000 KNOT-FT) INCREASING TO VERY GOOD
                    (113700 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS
IN THE EVENING...THEN ISOLATED SHOWERS AFTER MIDNIGHT. LOWS IN
THE UPPER 30S. WINDS GENERALLY LESS THAN 10 MPH.
.TUESDAY...PARTLY CLOUDY WITH ISOLATED SHOWERS AND THUNDERSTORMS.
LOWS IN THE LOWER 30S. HIGHS IN THE MID 60S. WINDS GENERALLY LESS
THAN 10 MPH.
.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...RED ROCK LOOKOUT
REASON FOR REQUEST...WILDFIRE
.TAG 20110904.REDRO.01/RIW