FNUS75 KRIW 201218
FWSRIW

SPOT FORECAST FOR GREEN...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
618 AM MDT TUE AUG 20 2013

FORECAST IS BASED ON REQUEST TIME OF 1721 MDT ON AUGUST 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

THE INITIAL SURGE OF MONSOONAL MOISTURE WILL OVERSPREAD THE REGION
TODAY. THIS WILL RESULT IN WIDELY SCATTERED SHOWERS AND THUNDERSTORMS
TODAY...AS WELL AS HIGHER RELATIVE HUMIDITY. THE MAIN HAZARD FROM
ANY THUNDERSTORM ACTIVITY TODAY WILL BE VERY GUSTY AND ERRATIC
WINDS TO 45 MPH. THIS CAN OCCUR WELL AWAY FROM THE MAIN
THUNDERSTORM. THERE EVEN COULD BE SOME SPRINKLES THIS MORNING.

A MUCH BETTER SHOT AT SHOWERS AND THUNDERSTORMS WILL OCCUR
WEDNESDAY INTO THURSDAY. COOLER TEMPERATURES AND MUCH HIGHER
RELATIVE HUMIDITY ARE EXPECTED WEDNESDAY DUE TO THE ANTICIPATED
THUNDERSTORMS AND ASSOCIATED CLOUD COVER.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY (60-75 PERCENT).
                    WIDELY SCATTERED SHOWERS AND THUNDERSTORMS IN
                    THE AFTERNOON. SPRINKLES POSSIBLE THIS MORNING.
MAX TEMPERATURE.....75 AT 8000 FT. 60 AT 11000 FT.
MIN HUMIDITY........20-25 PERCENT.
20 FOOT WINDS.......UPSLOPE/UP CANYON OR WEST NORTHWEST 4-8 MPH.
                    GUSTS UP TO 15 MPH IN THE AFTERNOON. GUSTIER
                    AND ERRATIC WINDS EXPECTED NEAR ANY THUNDERSTORMS.
RIDGE TOP WINDS.....WEST AROUND 10 MPH.
LAL.................1 UNTIL NOON...THEN 3.
CHC OF WETTING RAIN.10 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

.TONIGHT...
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY (55-65 PERCENT).
                    WIDELY SCATTERED SHOWERS AND THUNDERSTORMS
                    IN THE EVENING...THEN ISOLATED SHOWERS
                    POSSIBLE AFTER MIDNIGHT.
MIN TEMPERATURE.....45-50.
MAX HUMIDITY........75-85 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
RIDGE TOP WINDS.....WEST TO NORTHWEST AROUND 10 MPH.
LAL.................3 UNTIL MIDNIGHT...THEN 1.
CHC OF WETTING RAIN.10 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.WEDNESDAY...
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS IN THE MORNING...THEN
                    SCATTERED SHOWERS AND THUNDERSTORMS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....68 AT 8000 FT.  53 AT 11000 FT.
MIN HUMIDITY........35 PERCENT.
20 FOOT WINDS.......VARIABLE 3-6 MPH...BECOMING DOMINATED BY
                    GUSTY AND ERRATIC THUNDERSTORM WINDS BY
                    AROUND NOON.
RIDGE TOP WINDS.....NORTHWEST 5-10 MPH...BECOMING HIGHLY VARIABLE
                    IN THE AFTERNOON DUE TO THUNDERSTORMS.
LAL.................1 UNTIL 10 AM...THEN 2 UNTIL 1 PM...THEN 4.
CHC OF WETTING RAIN.25 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

.FORECAST DAYS 3 THROUGH 5...

.WEDNESDAY NIGHT...MOSTLY CLOUDY. SCATTERED SHOWERS AND
THUNDERSTORMS IN THE EVENING...THEN ISOLATED SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 40S. WINDS GENERALLY LESS THAN 10 MPH.

.THURSDAY...PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.
HIGHS IN THE LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH.

.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS AROUND 50. HIGHS IN THE LOWER 70S. WINDS
WEST 10-15 MPH. GUSTS TO 25 MPH.

.SATURDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE AFTERNOON AND EVENING. LOWS IN THE MID 40S.
HIGHS IN THE MID 60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...GREEN
REASON FOR REQUEST...WILDFIRE
.TAG 20130819.GREEN.01/RIW