FNUS75 KRIW 200233
FWSRIW

SPOT FORECAST FOR SPRINGMAN...BLM RSD
NATIONAL WEATHER SERVICE RIVERTON WY
833 PM MDT WED AUG 19 2009

FORECAST IS BASED ON REQUEST TIME OF 1953 MDT ON AUGUST 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
A RIDGE OF HIGH PRESSURE WILL BUILD INTO THE AREA OVER THE NEXT
COUPLE OF DAYS. THIS WILL RESULT IN DRY CONDITIONS...WARM
TEMPERATURES...AND MAINLY LIGHT TERRAIN DRIVEN WINDS OVER THE FIRE
SITE THROUGH AT LEAST FRIDAY. THE STRONGEST WINDS OVER THE NEXT
COUPLE OF DAYS SHOULD BE RIDGE TOP WINDS THIS EVENING WITH THE
WINDS WEAKENING AFTER MIDNIGHT. THE ABOVE AVERAGE
TEMPERATURES...COMBINED WITH A DRY ATMOSPHERE WILL RESULT IN LOW
MINIMUM RELATIVE HUMIDITY THROUGH AT LEAST SATURDAY.

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

FORECASTER...MURRELL

.TONIGHT...
SKY/WEATHER.........CLEAR (0-10 PERCENT).
MIN TEMPERATURE.....33-37.
MAX HUMIDITY........75-80 PERCENT.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3-6 MPH.
RIDGE TOP WINDS.....NORTHWEST 10 TO 20 MPH SHIFTING TO THE NORTH
                    5 TO 10 MPH AFTER MIDNIGHT.
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 500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 10 TO 20 MPH SHIFTING TO THE
                    NORTH 5 TO 10 MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....POOR.

.THURSDAY...
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
MAX TEMPERATURE.....70-75.
MIN HUMIDITY........17-22 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 4-8 MPH.
RIDGE TOP WINDS.....WEST NORTHWEST 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.......3500 FT AGL INCREASING TO 6100 FT AGL IN THE
                    AFTERNOON.
TRANSPORT WINDS.....WEST NORTHWEST 5 TO 10 MPH.
SMOKE DISPERSAL.....POOR (24400 KNOT-FT) INCREASING TO FAIR (48800
                    KNOT-FT).

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY NIGHT...CLEAR. LOWS IN THE UPPER 30S. WINDS GENERALLY
LESS THAN 10 MPH.
.FRIDAY...MOSTLY CLEAR. LOWS AROUND 40. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.SUNDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS AROUND 70. WINDS
GENERALLY LESS THAN 10 MPH.
.MONDAY...PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...JEREMY BRADLEY
REASON FOR REQUEST...WILDFIRE
.TAG 20090819.SPRIN.01/RIW