FNUS75 KRIW 121657
FWSRIW

SPOT FORECAST FOR MOSS RANCH...IA CDC
NATIONAL WEATHER SERVICE RIVERTON WY
1057 AM MDT SUN APR 12 2009

FORECAST IS BASED ON IGNITION TIME OF 1010 MDT ON APRIL 12.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A TROUGH OF LOW PRESSURE TRACKING EAST ACROSS MONTANA WILL
STIR THE WINDS UP FROM THE NORTHWEST TODAY OVER THE BURN AREA. THERE MAY BE
A TEMPORARY LULL IN THE WINDS THROUGH 1230 THIS AFTERNOON AS A WEAK FRONTAL
BOUNDARY TRACKS ACROSS THE AREA BUT THE NORTHWEST WINDS OF 15 TO 25 MPH SHOULD
RESUME FOR THE REMAINDER OF THE AFTERNOON. OTHERWISE MILD AND DRY WEATHER WILL
BE THE RULE THROUGH MONDAY. A SIGNIFICANT PRECIPITATION EVENT IS LIKELY BEGINNING BY LATE
TUESDAY NIGHT AND LAST THROUGH AT LEAST THURSDAY. THE PRECIPITATION
WILL START AS RAIN AND THEN TURN TO SNOW BY WEDNESDAY NIGHT.

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

FORECASTER...LIPSON

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT).
MAX TEMPERATURE.....64-66.
MIN HUMIDITY........26-29 PERCENT.
20 FOOT WINDS.......NORTH NORTHWEST WINDS 10 TO 14 MPH WITH GUSTS TO AROUND
                    25 MPH. WINDS WILL LIKLEY DIMINISH TO 5 TO 10 MPH
                    FROM THE NORTH FROM 1130 THROUGH 1230 BEFORE INCREASING
                    AGAIN AY 10 TO 14 MPH FROM THE NORTHWEST WITH GUSTS OF 25 MPH.
RIDGE TOP WINDS.....NORTH NORTHWEST 15 TO 25 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 20 MPH.
SMOKE DISPERSAL.....VERY GOOD.

.TONIGHT...
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
MIN TEMPERATURE.....36-39.
MAX HUMIDITY........76-79 PERCENT.
20 FOOT WINDS.......NORTHWEST WINDS AROUND 8 MPH WITH GUSTS TO
                    AROUND 15 MPH EARLY IN THE EVENING BECOMING
                    DOWNSLOPE/DOWNVALLEY FROM THE NORTHEAST AT 4-7 MPH.
RIDGE TOP WINDS.....SOUTHWEST 7 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4.
MIXING HEIGHT.......LESS THAN 1000 FEET AGL.
TRANSPORT WINDS.....NORTHEAST 4 TO 7 MPH.
SMOKE DISPERSAL.....POOR.

.MONDAY...
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT) THEN BECOMING
                    PARTLY CLOUDY (30-40 PERCENT).
MAX TEMPERATURE.....62-65.
MIN HUMIDITY........20-23 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY FROM THE SOUTHWEST 5-9 MPH.
RIDGE TOP WINDS.....SOUTHWEST 5 TO 8 MPH.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4.
MIXING HEIGHT.......8800 FEET AGL.
TRANSPORT WINDS.....WEST SOUTHWEST 12 MPH.
SMOKE DISPERSAL.....VERY GOOD.

.FORECAST DAYS 3 THROUGH 5...
.MONDAY NIGHT...MOSTLY CLOUDY. SLIGHT CHANCE OF THUNDERSTORMS AND
ISOLATED SHOWERS IN THE EVENING...THEN SCATTERED SHOWERS AND
SLIGHT CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. LOWS IN THE UPPER
30S. WINDS GENERALLY LESS THAN 10 MPH.
.TUESDAY...COOLER...SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE
LOWER 30S. HIGHS IN THE MID 40S. WINDS GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...NUMEROUS SHOWERS WITH SOME SNOW MIXED WITH THE RAIN IN THE MORNING.
LOWS IN THE UPPER 20S. HIGHS IN THE UPPER 30S. NORTH WINDS AROUND 12 MPH.
.THURSDAY...CLOUDY WITH NUMEROUS SHOWERS AND SNOW SHOWERS. LOWS
IN THE UPPER 20S. HIGHS IN THE UPPER 30S. NORTH WINDS AROUND
12 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...SAGE DECKER
REASON FOR REQUEST...PRESCRIBED
.TAG 20090412.MOSSR.01/RIW