FNUS75 KRIW 051923
FWSRIW

SPOT FORECAST FOR DITCH CREEK...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
123 PM MDT SAT SEP 5 2009

FORECAST IS BASED ON IGNITION TIME OF 0822 MDT ON AUGUST 29.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
SCATTERED SHOWERS AND THUNDERSTORMS POSSIBLE OVER THE BURN SITE
THIS AFTERNOON. THUNDERSTORMS WILL PRODUCE LIGHTNING...AND MAY
CONTAIN ERRATIC AND GUSTY WIND TO 40 MPH. SHOWERS AND
THUNDERSTORMS WILL CONTINUE INTO THE EVENING...THOUGH COVERAGE
WILL DECREASE TO ISOLATED WITH LOSS OF DAYLIGHT. AN APPROACHING
AREA OF LOW PRESSURE WILL KEEP CLOUD COVER AND SHOWER ACTIVITY
PRESENT INTO SUNDAY OVER THE BURN SITE. TEMPERATURES ARE EXPECTED
TO BE SLIGHTLY COOLER SUNDAY...WITH DAY-TIME HUMIDITY INCREASING.
ANOTHER PUSH OF MOISTURE WILL MOVE OVER THE BURN SITE SUNDAY
AFTERNOON. THIS WILL AGAIN INCREASE SHOWER ACTIVITY...WITH
SCATTERED SHOWERS AND THUNDERSTORMS EXPECTED IN THE AFTERNOON.
LIGHTNING AND GUSTY WIND WILL AGAIN BE THE PRIMARY THREATS WITH
STORM ACTIVITY. WIND OUTSIDE OF THUNDERSTORM ACTIVITY IS
ANTICIPATED TO INCREASE SUNDAY AFTERNOON...AS SOUTHWESTERLY FLOW
INCREASES OVER THE BURN SITE.

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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) WITH SCATTERED
                    SHOWERS AND THUNDERSTORMS.
MAX TEMPERATURE.....71-76.
MIN HUMIDITY........20-25 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR AFTERNOON THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH.
LAL.................4.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 10000 FT AGL BY 1400.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
SMOKE DISPERSAL.....FAIR (52300 KNOT-FT) INCREASING TO VERY GOOD
                    (114800 KNOT-FT) IN THE AFTERNOON.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) WITH ISOLATED
                    SHOWERS AND THUNDERSTORMS.
MIN TEMPERATURE.....50-54.
MAX HUMIDITY........67-72 PERCENT.
20 FOOT WINDS.......BECOMING SOUTH 8-12 MPH WITH GUSTS TO AROUND
                    15 MPH AFTER 2200...THEN BECOMING
                    DOWNSLOPE/DOWNVALLEY 4-7 MPH BY 0400.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS.
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH.
LAL.................2.
CHC OF WETTING RAIN.3 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 700 FT AGL BY 0200.
TRANSPORT WINDS.....SOUTH 12 TO 17 MPH.
SMOKE DISPERSAL.....GOOD (66700 KNOT-FT) DECREASING TO POOR (9000
                    KNOT-FT) AFTER MIDNIGHT.

.SUNDAY...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT). ISOLATED RAIN
                    SHOWERS IN THE MORNING...THEN SCATTERED
                    SHOWERS AND THUNDERSTORMS AFTER 1300.
MAX TEMPERATURE.....68-72.
MIN HUMIDITY........24-29 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST
                    AND INCREASING TO 10-15 MPH WITH HIGHER GUSTS
                    BY 1300. GUSTY AND ERRATIC WINDS EXPECTED
                    NEAR THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTH 10 TO 15 MPH SHIFTING TO THE SOUTHWEST
                    AND INCREASING TO 15 TO 20 MPH BY 1500.
LAL.................1 UNTIL 1300...THEN 4.
CHC OF WETTING RAIN.7 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 10700 FT AGL BY 1400.
TRANSPORT WINDS.....SOUTH 14 TO 21 MPH SHIFTING TO THE SOUTHWEST
                    AROUND 24 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....GOOD (71500 KNOT-FT) INCREASING TO EXCELLENT
                    (208700 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.SUNDAY NIGHT...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
ISOLATED THUNDERSTORMS IN THE EVENING. LOWS AROUND 50. WINDS
GENERALLY LESS THAN 10 MPH.
.LABOR DAY...COOLER. PARTLY CLOUDY WITH CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS AROUND 60. WINDS
GENERALLY LESS THAN 10 MPH.
.TUESDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS IN THE LOWER 30S. HIGHS IN THE UPPER
50S. WINDS GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...PARTLY CLOUDY. LOWS IN THE UPPER 30S. HIGHS IN THE
MID 60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...VERO
REASON FOR REQUEST...PRESCRIBED
.TAG 20090829.DITCH.01/RIW