FNUS75 KRIW 071727
FWSRIW

SPOT FORECAST FOR LITTLE BROWN FIRE...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
1127 AM MDT MON SEP 7 2009

FORECAST IS BASED ON REQUEST TIME OF 1103 MDT ON SEPTEMBER 07.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
ANOTHER PUSH OF MONSOONAL MOISTURE WILL COMBINE WITH A MOVING
DISTURBANCE BRINGING ISOLATED SHOWERS AND THUNDERSTORMS OVER THE
FIRE THIS AFTERNOON. GUSTY WIND AND LIGHTNING WILL BE THE PRIMARY
THREATS WITH ANY SHOWER ACTIVITY TODAY. COOLER TEMPERATURES
EXPECTED TODAY...WITH FURTHER COOLING EXPECTED TUESDAY. INCREASED
SOUTHWESTERLY WIND WILL BE FOUND OVER THE AREA THIS
AFTERNOON...WITH WEAKENING EXPECTED THIS EVENING. AS THE
PREVIOUSLY MENTIONED DISTURBANCE MOVES THROUGH THE AREA...A DRIER
WEST TO NORTHWESTERLY FLOW WILL MOVE OVER THE FIRE BY TUESDAY
MORNING. THIS WILL END SHOWER ACTIVITY...WITH DRY CONDITIONS
CONTINUING INTO TUESDAY AFTERNOON.


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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT) WITH ISOLATED SHOWERS
                    AND THUNDERSTORMS...ESPECIALLY AFTER 1300.
MAX TEMPERATURE.....64-69.
MIN HUMIDITY........23-29 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTHWEST 10
                    TO 15 MPH WITH GUSTS TO AROUND 25 MPH BY 1300.
                    GUSTY AND ERRATIC WINDS EXPECTED NEAR
                    THUNDERSTORMS IN THE AFTERNOON.
RIDGE TOP WINDS.....SOUTHWEST 15 TO 20 MPH.
LAL.................1 UNTIL 1300...THEN 2.
CHC OF WETTING RAIN.3 PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 6700 FT AGL BY 1400.
TRANSPORT WINDS.....SOUTHWEST 15 TO 20 MPH INCREASING TO AROUND 25
                    MPH BY 1500.
SMOKE DISPERSAL.....FAIR (40700 KNOT-FT) INCREASING TO VERY GOOD
                    (126900 KNOT-FT) BY 1400.

.TONIGHT...
SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT). ISOLATED SHOWERS
                    AND THUNDERSTORMS THROUGH 2200.
MIN TEMPERATURE.....37-41.
MAX HUMIDITY........59-65 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS 7-10 MPH THROUGH 2000 BECOMING
                    DOWNSLOPE/DOWNVALLEY 4-7 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE EVENING.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.
LAL.................2 UNTIL 2200...THEN 1.
CHC OF WETTING RAIN.3 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 600 FT AGL BY 0200.
TRANSPORT WINDS.....SOUTHWEST 13 TO 18 MPH BECOMING WEST BY 0100.
SMOKE DISPERSAL.....POOR TO FAIR (7300-49500 KNOT-FT).

.TUESDAY...
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT).
MAX TEMPERATURE.....64-69.
MIN HUMIDITY........16-21 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING WEST 10 TO 15
                    MPH WITH HIGHER GUSTS BY 1300.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH... INCREASING TO 15 TO 20 MPH
                    BY 1300.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 5400 FT AGL BY 1400.
TRANSPORT WINDS.....WEST 13 TO 20 MPH.
SMOKE DISPERSAL.....POOR (33500 KNOT-FT) INCREASING TO GOOD (89400
                    KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...MOSTLY CLEAR. LOWS IN THE UPPER 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE
LOWER 70S. WINDS GENERALLY LESS THAN 10 MPH.
.THURSDAY...MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE MID
70S. WINDS GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...LANCASTER
REASON FOR REQUEST...WILDFIRE
.TAG 20090907.LITTL.01/RIW