FNUS75 KRIW 291606
FWSRIW

SPOT FORECAST FOR MARY ANN...USFS SHF
NATIONAL WEATHER SERVICE RIVERTON WY
1006 AM MDT WED SEP 29 2010

FORECAST IS BASED ON REQUEST TIME OF 0936 MDT ON SEPTEMBER 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH PRESSURE REMAINS ENTRENCHED OVER THE
INTERMOUNTAIN REGION TODAY...TONIGHT...AND TOMORROW. A WEAK COLD
FRONT HAS PUSHED INTO CENTRAL WYOMING THIS MORNING...BRINGING
COOLER TEMPERATURES COMPARED TO TUESDAY...AND A SHIFT OF THE WINDS
TO THE NORTHEAST IS EXPECTED FOR THIS AFTERNOON. CLEAR SKIES WILL
REMAIN OVERNIGHT AND TOMORROW...WITH SIMILAR TEMPERATURES AS
TODAY. EXPECT SOUTHWEST WIND AROUND 12 TO 15 MPH TO DEVELOP OVER
FIRE AREA THURSDAY AFTERNOON WITH TIGHTENING PRESSURE GRADIENT
OVER EASTERN WYOMING.


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

FORECASTER...MCDONALD

.TODAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....70-72.
MIN HUMIDITY........15-18 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH...WITH POSSIBLE SHIFT
                    TO THE NORTHEAST AROUND 1200.
RIDGE TOP WINDS.....NORTHEAST AROUND 10 SHIFTING TO THE EAST LATE IN
                    THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....45-48.
MAX HUMIDITY........50-60 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH.
RIDGE TOP WINDS.....EAST 5 TO 10 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.THURSDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....70-74.
MIN HUMIDITY........13-16 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST
                    AROUND 10 TO 15 MPH AFTER 1200.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...CLEAR. LOWS IN THE UPPER 40S. WINDS GENERALLY
LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE
UPPER 60S. WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MCDONALD
REQUESTED BY...CODY DISPATCH
REASON FOR REQUEST...WILDFIRE
.TAG 20100929.MARYA.01/RIW