FNUS75 KRIW 282112
FWSRIW

SPOT FORECAST FOR MEADOW FIRE...USFS BTF
NATIONAL WEATHER SERVICE RIVERTON WY
312 PM MDT WED SEP 28 2011

FORECAST IS BASED ON REQUEST TIME OF 1410 MDT ON SEPTEMBER 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...A WEAK...DRY COLD FRONT WILL MOVE ACROSS NORTHWEST WYOMING THROUGH
EARLY THIS EVENING. MINIMUM RH AND TEMPERATURES IN THE WAKE OF THIS FRONT WILL
BE SIMILAR TO WHAT OCCURRED YESTERDAY...WITH MODERATE WESTERLY
WINDS...BUT NOTHING EXTREME. WARM AND VERY DRY CONDITIONS ARE THEN
EXPECTED THURSDAY AND FRIDAY...WITH MAINLY LIGHT AND TERRAIN DRIVEN
WINDS.

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

FORECASTER...LIPSON

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....AROUND 40.
MAX HUMIDITY........79-82 PERCENT.
20 FOOT WINDS.......WEST SOUTHWEST WINDS AROUND 9 MPH WITH GUSTS TO AROUND 15
                    MPH EARLY IN THE EVENING THROUGH 2000 THEN DECREASING TO
                    4-7 MPH. SOME EDDYING WILL OCCUR THROUGH 2000.
RIDGE TOP WINDS.....WEST 10 TO 15 MPH SHIFTING TO THE SOUTH 5 TO 10
                    MPH AFTER MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......3200-4200 FT AGL DECREASING TO 900 FT AGL AFTER
                    MIDNIGHT.
TRANSPORT WINDS.....WEST 10 TO 17 MPH SHIFTING TO THE SOUTH 9 TO 10
                    MPH AFTER MIDNIGHT.
SMOKE DISPERSAL.....POOR TO FAIR (7400-50800 KNOT-FT).

.THURSDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....AROUND 70.
MIN HUMIDITY........24 PERCENT.
20 FOOT WINDS.......EAST UPSLOPE 5-9 MPH UNTIL 1100 THEN LIGHT AND VARIABLE.
RIDGE TOP WINDS.....SOUTH AROUND 10 MPH SHIFTING TO THE WEST IN THE
                    AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......1700-2700 FT AGL INCREASING TO 4900-5900 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTH AROUND 12 MPH SHIFTING TO THE WEST 8 TO
                    12 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR TO FAIR (12100-40900 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 LOWER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS. LOWS
AROUND 40. HIGHS IN THE UPPER 60S. WINDS GENERALLY LESS THAN
10 MPH.
.SUNDAY...PARTLY CLOUDY WITH SCATTERED SHOWERS AND THUNDERSTORMS.
LOWS IN THE UPPER 30S. HIGHS IN THE MID 60S. WINDS GENERALLY LESS
THAN 10 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...RR IC
REASON FOR REQUEST...WILDFIRE
.TAG 20110928.MEADO.01/RIW