FNUS75 KRIW 232022
FWSRIW

SPOT FORECAST FOR CHICKEN CREEK...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
222 PM MDT WED SEP 23 2009

FORECAST IS BASED ON IGNITION TIME OF 1325 MDT ON SEPTEMBER 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
HIGH PRESSURE OVER THE AREA WILL KEEP WARMING TEMPERATURES AND
LOWERED HUMIDITY OVER THE BURN SITE THIS AFTERNOON. SIMILAR
CONDITIONS EXPECTED THURSDAY OVER THE BURN SITE. HIGH PRESSURE
WILL REMAIN OVER THE AREA THROUGH FRIDAY AFTERNOON. A WEAK
DISTURBANCE WILL MOVE OVER THE FIRE FRIDAY NIGHT AND INTO SATURDAY
MORNING. THIS DISTURBANCE IS NOT EXPECTED TO BRING SIGNIFICANT
PRECIPITATION OVER THE AREA...AND WILL PRIMARILY BE A WEAK WIND
SHIFT.


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

FORECASTER...BRANHAM

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....63-67.
MIN HUMIDITY........26-30 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING NORTH AROUND
                    11 MPH BY 1500. GUSTS UP TO 15 TO 20 MPH.
RIDGE TOP WINDS.....NORTH NORTHEAST AROUND 15 MPH.
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 6500 FT AGL BY 1500.
TRANSPORT WINDS.....NORTH NORTHEAST 15 TO 20 MPH.
SMOKE DISPERSAL.....INCREASING TO GOOD (91500 KNOT-FT) BY 1500.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
MIN TEMPERATURE.....33-38.
MAX HUMIDITY........63-68 PERCENT.
20 FOOT WINDS.......NORTHEAST WINDS 1O TO 15 MPH AND GUSTY UNTIL
                    0400 THEN BECOMING DOWNSLOPE/DOWNVALLEY 4-7
                    MPH.
RIDGE TOP WINDS.....NORTHEAST 12 TO 20 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......DECREASING TO 300 FT AGL BY 0200.
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH DECREASING TO AROUND 10
                    MPH BY 0400.
SMOKE DISPERSAL.....POOR TO FAIR (3700-42900 KNOT-FT).

.THURSDAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....61-65.
MIN HUMIDITY........22-25 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH.
RIDGE TOP WINDS.....NORTH AROUND 10 MPH SHIFTING TO THE WEST IN THE
                    BY 1100.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......INCREASING TO 7400 FT AGL BY 1400.
TRANSPORT WINDS.....NORTH AROUND 10 MPH SHIFTING TO THE WEST 8 TO
                    14 MPH BY 1100.
SMOKE DISPERSAL.....INCREASING TO GOOD (84800 KNOT-FT) BY 1300.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER
60S. WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS IN THE UPPER 30S. HIGHS IN THE MID
60S. WEST WINDS AROUND 11 MPH.
.SUNDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS IN THE UPPER
60S. NORTHWEST WINDS AROUND 11 MPH.

$$

FORECASTER...BRANHAM
REQUESTED BY...KABER
REASON FOR REQUEST...PRESCRIBED
.TAG 20090923.CHICK.01/RIW