FNUS75 KRIW 131618
FWSRIW

SPOT FORECAST FOR MOSS RANCH...IA CDC
NATIONAL WEATHER SERVICE RIVERTON WY
1018 AM MDT MON APR 13 2009

FORECAST IS BASED ON IGNITION TIME OF 0920 MDT ON APRIL 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...AREA OF CLOUDINESS OVER NORTHERN WYOMING TODAY OUT
AHEAD OF STRONG LOW PRESSURE SYSTEM OFF THE PACIFIC NORTHWEST
COAST. TEMPS TO BE SIMILAR TO YESTERDAY...MAYBE BIT COOLER...WITH
HUMIDITIES SLIGHTLY LOWER DUE TO SOUTH WINDS. WIND SPEED TO PICK
UP THIS AFTERNOON...BUT NOT TOO STRONG. CLOUDINESS TO REMAIN
OVERNIGHT...WITH SOME WEAK SHOWERS AND GUSTY SOUTHWEST OUTFLOW IN
THE EVENING TIME. AS STRONG STORM SYSTEM MOVES IN TO WESTERN
U.S....PRECIPITATION CHANCES INCREASE TOMORROW AFTERNOON WITH
STRONGER FLOW. WINDS TUESDAY TO INCREASE FROM THE SOUTH...WITH
FRONT MOVING IN TO YNP BY LATE AFTERNOON. EXPECT WIND SHIFT AT
FIRE SITE TUESDAY EVENING WITH INCREASE IN PRECIPITATION.

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

FORECASTER...MCDONALD

.TODAY...
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY (60-80 PERCENT).
MAX TEMPERATURE.....60-64.
MIN HUMIDITY........24-28 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 3-6 MPH...SOUTH AT 5 TO 8 MPH
                    AFTER 1500.
RIDGE TOP WINDS.....SOUTH 8 TO 10 MPH...INCREASING TO 10 TO 15 MPH
                    AFTER 1500.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5000-7000 FT AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.
SMOKE DISPERSAL.....FAIR TO GOOD (50000-105000 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........PARTLY TO MOSTLY CLOUDY (60 TO 80 PERCENT)
                    SLIGHT CHANCE OF RAIN SHOWERS FROM 1800 TO 2400.
MIN TEMPERATURE.....38-42.
MAX HUMIDITY........85-90 PERCENT.
20 FOOT WINDS.......SOUTHWEST WINDS AROUND 10 MPH WITH GUSTS UP TO
                    15 MPH UNTIL 2200...THEN DOWNSLOPE/DOWNVALLEY
                    4-7 MPH.
RIDGE TOP WINDS.....SOUTHWEST 10 TO 15 MPH DECREASING TO AROUND 5
                    MPH AFTER 2400.
LAL.................1.
CHC OF WETTING RAIN.5 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......2000-4000 FT AGL DECREASING TO 500 FT AGL AFTER
                    2400.
TRANSPORT WINDS.....SOUTH AROUND 10 MPH SHIFTING TO THE WEST AFTER 2100.
                    BECOMING SOUTH 6 TO 8 MPH AFTER 0300.
SMOKE DISPERSAL.....POOR TO FAIR (3000-40000 KNOT-FT).

.TUESDAY...
SKY/WEATHER.........CLOUDY (70-90 PERCENT). SLIGHT CHANCE OF RAIN
                    IN THE MORNING...THEN RAIN LIKELY IN THE
                    AFTERNOON.
MAX TEMPERATURE.....45-50.
MIN HUMIDITY........50-60 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH BECOMING SOUTH AROUND
                    13 MPH WITH GUSTS OVER 18 MPH AFTER 1200.
RIDGE TOP WINDS.....SOUTH AROUND 5 MPH INCREASING TO 20 TO 25
                    MPH AFTER 1200.
LAL.................1.
CHC OF WETTING RAIN.30 PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1000-3000 FT AGL.
TRANSPORT WINDS.....LIGHT AND VARIABLE WINDS BECOMING SOUTH
                    AROUND 20 MPH AFTER 1200.
SMOKE DISPERSAL.....POOR TO FAIR (3000-60000 KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...RAIN LIKELY IN THE EVENING...THEN SNOW LIKELY
AFTER MIDNIGHT. LOWS IN THE MID 30S. NORTH WINDS AROUND 11 MPH.
.WEDNESDAY...COLDER. RAIN AND SNOW. LOWS AROUND 30. HIGHS IN THE
UPPER 30S. NORTH WINDS AROUND 12 MPH.
.THURSDAY...SHOWERS AND SNOW SHOWERS LIKELY. LOWS IN THE UPPER
20S. HIGHS IN THE MID 30S. NORTH WINDS AROUND 17 MPH.
.FRIDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW SHOWERS.
LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 30S. NORTH WINDS AROUND
11 MPH.

$$

FORECASTER...MCDONALD
REQUESTED BY...JACK MONONI
REASON FOR REQUEST...PRESCRIBED
.TAG 20090413.MOSSR.01/RIW