FNUS75 KRIW 271056
FWSRIW

SPOT FORECAST FOR PHELPS MORAINE...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
456 AM MDT MON SEP 27 2010

FORECAST IS BASED ON IGNITION TIME OF 1830 MDT ON SEPTEMBER 26.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION....AN UPPER RIDGE OF HIGH PRESSURE...DRY AND WARM
CONDITIONS...WILL CONTINUE TO PREVAIL OVER THE NEXT SEVERAL DAYS.
JUST A SLIGHTLY COOLER TREND WILL OCCUR TODAY FROM SUNDAY WITH
NO TREND IN RELATIVE HUMIDITY. WINDS WILL REMAIN LIGHT. TUESDAY WILL SEE A
TREND TOWARD WARMER AND DRIER CONDITIONS WITH GUSTY SOUTHWEST
BREEZES IN THE AFTERNOON. A COLD FRONT WILL PUSH SOUTH ACROSS
MONTANA INTO NORTHWEST WYOMING WEDNESDAY MORNING WITH A WIND SHIFT FROM
THE NORTH EXPECTED LATER WEDNESDAY AFTERNOON.

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

FORECASTER...MEUNIER

.TODAY...
SKY/WEATHER.........SOME MORNING HIGH CLOUDS...THEN SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....AROUND 80.
MIN HUMIDITY........12-14 PERCENT.
20 FOOT WINDS.......BECOMING UPSLOPE OR SOUTHEAST 4-7 MPH THIS MORNING
                    AND THEN BECOMING WEST SOUTHWEST 5-9 MPH AROUND 1400.
RIDGE TOP WINDS.....WEST SOUTHWEST AROUND 5 TO 10 MPH.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

MIXING HEIGHT.......LESS THAN 1000 FEET THROUGH 1000 THEN INCREASING TO
                    NEAR 5000 FEET AGL IN THE AFTERNOON.
TRANSPORT WINDS.....WEST 5 TO 10 MPH.
SMOKE DISPERSAL.....POOR (17400-31600 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....34-37.
MAX HUMIDITY........62-65 PERCENT.
20 FOOT WINDS.......BECOMING DOWNSLOPE/DOWNVALLEY 4-7 MPH WITH SUNSET.
RIDGE TOP WINDS.....WEST SOUTHWEST 5 TO 10 MPH.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.

MIXING HEIGHT.......2900-3900 FT AGL DECREASING TO 300 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....WEST SOUTHWEST 5 TO 10 MPH.
SMOKE DISPERSAL.....POOR (3300-22800 KNOT-FT).

.TUESDAY...
SKY/WEATHER.........SUNNY (5-15 PERCENT).
MAX TEMPERATURE.....80-82.
MIN HUMIDITY........10-13 PERCENT.

20 FOOT WINDS.......UPSLOPE/UPVALLEY OR SOUTHEAST 4-7 MPH IN THE MORNING.
                    BECOMING SOUTHWEST AROUND 10 MPH WITH GUSTS 15 TO 20 MPH
                    IN THE AFTERNOON.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH.

LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.

MIXING HEIGHT.......1800-2800 FT AGL INCREASING TO 5000-6000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH 5-9 MPH IN THE MORNING BECOMING
                    WEST 15 TO 20 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR TO FAIR (13500-49300 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...CLEAR. LOWS IN THE LOWER 30S. WINDS GENERALLY
LESS THAN 10 MPH.

.WEDNESDAY...CLEAR. LOWS IN THE MID 30S. HIGHS AROUND 80. WINDS
GENERALLY LESS THAN 10 MPH.

.THURSDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS AROUND 80.
WINDS GENERALLY LESS THAN 10 MPH.

.FRIDAY...MOSTLY CLEAR. LOWS IN THE MID 30S. HIGHS AROUND 80.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MEUNIER
REQUESTED BY...MARKASON
REASON FOR REQUEST...PRESCRIBED
.TAG 20100926.PHELP.01/RIW