FNUS75 KRIW 130057
FWSRIW

SPOT FORECAST FOR FOREST PARK...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
657 PM MDT WED SEP 12 2012

FORECAST IS BASED ON REQUEST TIME OF 1834 MDT ON SEPTEMBER 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

A VERY DRY AND WARM AIR MASS WILL CONTINUE OVER THE WILDFIRE AREA
THE NEXT COUPLE OF DAYS. THE WEST TO NORTHWEST WINDS WILL
CONTINUE TO WEAKEN THIS EVENING..BECOMING DOWNSLOPE/DOWNVALLEY
BETWEEN 8 PM AND 10 PM. LIGHT WINDS...CLEAR SKIES AND A VERY DRY
AIR MASS WILL RESULT IN THE COLDEST NIGHT SO FAR...WITH
TEMPERATURES DIPPING TO NEAR 20 IN THE VALLEY TONIGHT...WHILE ON THE
MIDSLOPE AND RIDGES TEMPERATURES WILL BE WARMER. VERY LIGHT AND
TERRAIN DRIVEN WINDS ARE EXPECTED THURSDAY. VERY WARM AND DRY
CONDITIONS WILL CONTINUE FRIDAY.

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

FORECASTER...MURRELL

.TONIGHT...
SKY/WEATHER.........CLEAR AND COLD (0-10 PERCENT).
MIN TEMPERATURE.....20 VALLEY. 30-35 MIDSLOPE AND RIDGES
MAX HUMIDITY........60 PERCENT VALLEY. 30 PERCENT MIDSLOPE AND RIDGES
20 FOOT WINDS.......WEST TO NORTHWEST WINDS 5-10 MPH...GUSTS TO
                    AROUND 15 MPH...BECOMING DOWNSLOPE/DOWNVALLEY
                    4-7 MPH BY 10 PM.
RIDGE TOP WINDS.....NORTHWEST TO NORTH AROUND 15 MPH...BECOMING NORTH
                    5-10 MPH BY MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR VERY MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.THURSDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....75.
MIN HUMIDITY........8-10 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH.
RIDGE TOP WINDS.....LIGHT AND VARIABLE BECOMING WEST TO NORTHWEST
                    AROUND 5 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR VERY MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...

.THURSDAY NIGHT...CLEAR. LOWS IN THE MID 30S. WINDS GENERALLY
LESS THAN 10 MPH.

.FRIDAY...CLEAR. HIGHS IN THE MID 70S. WINDS GENERALLY LESS THAN
10 MPH. MIN RH AROUND 10 PERCENT. LIGHT AND VARIABLE OR LIGHT
SOUTH IN THE MORNING BECOMING WEST 5-10 MPH IN THE AFTERNOON. GUSTS
UP TO 20 MPH IN THE AFTERNOON.

.SATURDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE MID
70S. WINDS GENERALLY LESS THAN 10 MPH.

.SUNDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.

.MONDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...LOOKOUT
REASON FOR REQUEST...WILDFIRE
.TAG 20120912.FORES.01/RIW