FNUS75 KRIW 061656
FWSRIW

SPOT FORECAST FOR MOSS RANCH...BLM CAD
NATIONAL WEATHER SERVICE RIVERTON WY
1056 AM MDT MON APR 6 2009

FORECAST IS BASED ON IGNITION TIME OF 1127 MDT ON APRIL 06.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A STRONG UPPER LEVEL RIDGE OF HIGH PRESSURE OVER THE INTERMOUNTAIN
WEST WILL PRODUCE DRY AND SUNNY CONDITIONS IN THE NORTHERN BIG
HORN BASIN AND NORTHERN BIG HORN MOUNTAINS TODAY. VERY DRY AIR AT
MOUNTAIN TOP LEVEL WILL BE BROUGHT DOWNWARD SOMEWHAT THIS AFTERNOON
WITH MINIMUM HUMIDITY PERCENTAGES FALLING INTO THE LOWER 20S. A
STRENGTHENING SURFACE TROUGH IN THE LEE OF THE MONTANA ROCKIES
WILL ENHANCE SOUTHWEST WIND A LITTLE THIS AFTERNOON AS THE
GENERAL WIND FLOW COMBINES WITH THE LOCAL WIND. DOWNSLOPE/DOWNVALLEY
FLOW WILL DEVELOP AROUND SUNSET AND CONTINUE THROUGH THE EARLY
MORNING TUESDAY. THE STRONG RIDGE OF HIGH PRESSURE WILL MOVE OVER
WYOMING ON TUESDAY AND PRODUCE WARMER TEMPERATURES...LOW MINIMUM
HUMIDITY ALONG WITH STABLE CONDITIONS AND LIGHT WIND.

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

FORECASTER...CHURCH

.TODAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....49-53.
MIN HUMIDITY........20-25 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 5-9 MPH. GUSTS UP TO 15 MPH IN
                    THE  AFTERNOON.
RIDGE TOP WINDS.....NORTHWEST 10-15 MPH.
LAL.................1.
CHC OF WETTING RAIN.0 PERCENT.
HAINES INDEX........3. LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1473 FT AGL.
TRANSPORT WINDS.....NORTHWEST 15 MPH.
SMOKE DISPERSAL.....POOR.

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....28-32.
MAX HUMIDITY........68-73 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3-6 MPH.
RIDGE TOP WINDS.....NORTHWEST 10-15 MPH.
LAL.................1.
CHC OF WETTING RAIN.0 PERCENT.
HAINES INDEX........3. LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......120 FT AGL.
TRANSPORT WINDS.....NORTHWEST 15 MPH.
SMOKE DISPERSAL.....VERY POOR.

.TUESDAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....58-61.
MIN HUMIDITY........15-18 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 3-7 MPH.
RIDGE TOP WINDS.....WEST/NORTHWEST 10 MPH.
LAL.................1.
CHC OF WETTING RAIN.0 PERCENT.
HAINES INDEX........3. LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3320.
TRANSPORT WINDS.....WEST/NORTHWEST 10 MPH.
SMOKE DISPERSAL.....FAIR.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...PARTLY CLOUDY. LOWS IN THE MID 30S. WINDS
GENERALLY LESS THAN 10 MPH.
.WEDNESDAY...MOSTLY CLOUDY WITH CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE MID 30S. HIGHS IN THE MID 50S. WINDS
GENERALLY LESS THAN 10 MPH.
.THURSDAY...MOSTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND SNOW
SHOWERS. LOWS IN THE LOWER 30S. HIGHS IN THE LOWER 50S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS...SNOW SHOWERS
AND ISOLATED THUNDERSTORMS. LOWS IN THE MID 30S. HIGHS IN THE MID
50S. WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...CHURCH
REQUESTED BY...CATHY HUTTON
REASON FOR REQUEST...PRESCRIBED
.TAG 20090406.MOSSR.01/RIW