FNUS75 KRIW 020954
FWSRIW

SPOT FORECAST FOR FONTENELLE...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
354 AM MDT THU AUG 2 2012

FORECAST IS BASED ON REQUEST TIME OF 1950 MDT ON AUGUST 01.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING...

.DISCUSSION...

RED FLAG CONDITIONS WILL OCCUR TODAY OVER THE WILDFIRE AREA.
WARM...WINDY...VERY LOW HUMIDITY AND A HAINES INDEX OF 6...WILL
ALL COMBINE TO PRODUCE EXTREME FIRE BEHAVIOR THIS AFTERNOON AND
EVENING. VERY POOR HUMIDITY RECOVERY IS EXPECTED OVERNIGHT...EXCEPT
PERHAPS IN MEADOWS SUCH AS SNIDER BASIN WHERE IT COULD BE FAIR. A
DRY COLD FRONT WILL MOVE THROUGH THE AREA FRIDAY...RESULTING IN
SLIGHTLY COOLER TEMPS AND HIGHER HUMIDITY...BUT UNFORTUNATELY
STRONGER WEST TO NORTHWEST WINDS.

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

FORECASTER...MURRELL

.TODAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....75-80.
MIN HUMIDITY........AROUND 10 PERCENT.
20 FOOT WINDS.......WEST WINDS 5-10 MPH...INCREASING TO 15-20 MPH
                    BY AROUND NOON. GUSTS TO AROUND 30 MPH.
RIDGE TOP WINDS.....WEST AROUND 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2500 FT AGL INCREASING TO 9500 FT AGL IN
                    THE AFTERNOON.
TRANSPORT WINDS.....WEST 20 TO 25 MPH.
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT.

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....45-50.
MAX HUMIDITY........25-30 PERCENT...EXCEPT NEAR 50 PERCENT AT
                    SNIDER BASIN RAWS.
20 FOOT WINDS.......WEST WINDS 10-15 MPH...DECREASING TO 5-10 MPH
                    BY MIDNIGHT. GUSTS TO AROUND 25 MPH AT TIMES
                    THROUGH THE NIGHT.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......6300 FT AGL DECREASING TO 2600 FT AGL BY 9 PM.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
SMOKE DISPERSAL.....VERY GOOD DECREASING TO FAIR BY 9 PM.

.FRIDAY...
SKY/WEATHER.........MOSTLY SUNNY (5-15 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (30-40 PERCENT).
MAX TEMPERATURE.....AROUND 70.
MIN HUMIDITY........15-20 PERCENT.
20 FOOT WINDS.......WEST WINDS 10-15 MPH...INCREASING TO 20-25 MPH
                    BY NOON. GUSTS TO 40 MPH.
RIDGE TOP WINDS.....WEST 20 TO 30 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......3800 FT AGL INCREASING TO 8500 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 25 TO 35 MPH.
SMOKE DISPERSAL.....GOOD TO EXCELLENT.

.FORECAST DAYS 3 THROUGH 5...

.FRIDAY NIGHT...MOSTLY CLEAR. LOWS AROUND 40. WINDS GENERALLY
LESS THAN 10 MPH.

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

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

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

$$

FORECASTER...MURRELL
REQUESTED BY...LANCASTER
REASON FOR REQUEST...WILDFIRE
.TAG 20120801.FONTE.01/RIW