FNUS75 KRIW 220010
FWSRIW

SPOT FORECAST FOR BEACH FIRE...NPS YNP
NATIONAL WEATHER SERVICE RIVERTON WY
610 PM MDT WED JUL 21 2010

FORECAST IS BASED ON REQUEST TIME OF 1727 MDT ON JULY 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...SCATTERED RAIN SHOWERS AND ISOLATED THUNDERSTORMS ARE
EXPECTED TO REDEVELOP THIS EVENING...ENDING AROUND DAYBREAK. THURSDAY
LOOKS DRY IN THE MORNING...THEN ISOLATED AFTERNOON AND EARLY EVENING
SHOWERS OR STORMS ARE EXPECTED TO DEVELOP NEAR THE FIRE AREA. DRY
WEATHER IS FORECAST FRIDAY AND SATURDAY.

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

FORECASTER...AR

.TONIGHT...
SKY/WEATHER.........TURNING MOSTLY CLOUDY (65-75 PERCENT). SCATTERED
                    RAIN SHOWERS AND ISOLATED THUNDERSTORMS.
MIN TEMPERATURE.....40 TO 45.
MAX HUMIDITY........87 TO 93 PERCENT.
WIND (20 FT)........SOUTH TO SOUTHEAST AT 3 TO 6 MPH...BECOMING
                    VARIABLE AT 3 TO 5 MPH AFTER 9 PM.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR ANY
                    THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTH TO SOUTHWEST AT 6 TO 11 MPH...
                    BECOMING NORTH AT 4 TO 8 MPH AROUND MIDNIGHT.
LAL.................2.
CWR.................12 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 1000 FT AGL BY MIDNIGHT.
TRANSPORT WINDS.....SOUTH AT 10 MPH...SHIFTING TO THE NORTH AT 10 MPH
                    AFTER MIDNIGHT.
SMOKE DISPERSAL.....DECREASING TO POOR BY MIDNIGHT.

.THURSDAY...
SKY/WEATHER.........PARTLY CLOUDY IN THE MORNING.
                    BECOMING MOSTLY CLOUDY IN THE AFTERNOON.
                    ISOLATED SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.
MAX TEMPERATURE.....65-70.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........VARIABLE AT 3 TO 6 MPH IN THE MORNING.
                    WEST TO SOUTHWEST 10 TO 15 MPH IN THE AFTERNOON WITH
                    GUSTS TO 20 MPH.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
                    IN THE AFTERNOON.
RIDGE TOP WINDS.....VARIABLE AT 4 TO 8 MPH IN THE MORNING.
                    WEST TO SOUTHWEST 15 TO 20 MPH IN THE AFTERNOON WITH
                    GUSTS AROUND 25 MPH.
LAL.................1 UNTIL 1200...THEN 2.
CWR.................LESS THAN 5 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 7000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST TO SOUTHWEST 20 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....INCREASING TO VERY GOOD IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 30S.

.FRIDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE UPPER
60S. WEST TO SOUTHWEST WINDS AROUND 15 MPH BY AFTERNOON.

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

.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 70S. WINDS
GENERALLY LESS THAN 10 MPH.

.MONDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...ROSS
REQUESTED BY...EDWIN FOLTS
REASON FOR REQUEST...WILDFIRE
.TAG 20100721.BEACH.01/RIW