FNUS75 KRIW 101929
FWSRIW

SPOT FORECAST FOR MIDWEST...BLM CAD
NATIONAL WEATHER SERVICE RIVERTON WY
129 PM MDT TUE AUG 10 2010

FORECAST IS BASED ON REQUEST TIME OF 1256 MDT ON AUGUST 10.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...TODAY LOOKS LIKE A DECENT DAY ACROSS NORTHERN WYOMING.
SOME SOUTHWEST BREEZES ARE EXPECTED THIS AFTERNOON AND EVENING.
SOUTHWEST TO WEST WINDS WILL INCREASE WEDNESDAY INCREASING THE FIRE
WEATHER DANGER WHEN COMBINED WITH RELATIVE HUMIDITY IN THE TEENS.
WILL SEE THE SHOWER AND THUNDERSTORM THREAT INCREASE THURSDAY
AS A STORM SYSTEM APPROACHES AND MOVES THROUGH. A COLD FRONT WILL ACCOMPANY
THE STORM PASSING THURSDAY EVENING WITH MUCH COOLER AND DRIER AIR MOVING IN.

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

FORECASTER...LIPSON

.REST OF TODAY...
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
MAX TEMPERATURE.....AROUND 91.
MIN HUMIDITY........19 PERCENT.
WIND (20 FT)........WEST NORTHWEST WINDS AROUND 11 MPH WITH GUSTS UP TO
                    20 MPH.
RIDGE TOP WINDS.....WEST 15 TO 20 MPH.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......10300-11300 FT AGL.
TRANSPORT WINDS.....WEST 20 TO 22 MPH.
SMOKE DISPERSAL.....EXCELLENT (183400 KNOT-FT).

.TONIGHT...
SKY/WEATHER.........CLEAR (5-15 PERCENT).
MIN TEMPERATURE.....55-58.
MAX HUMIDITY........58-61 PERCENT.
WIND (20 FT)........WEST 10 TO 15 MPH BECOMING SOUTHWEST 3 TO 5 MPH
                    BY 2100 WITH WINDS INCREASING TO 10 TO 15 MPH BY MIDNIGHT
                    WITH SOME GUSTS UP TO 20 MPH.
RIDGE TOP WINDS.....SOUTHWEST AROUND 15 MPH SHIFTING TO THE SOUTH
                    IN THE LATE EVENING AND OVERNIGHT.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......7700-8700 FT AGL DECREASING TO 2000-3000 FT AGL
                    AFTER MIDNIGHT.
TRANSPORT WINDS.....SOUTHWEST AROUND 17 MPH SHIFTING TO THE SOUTH
                    IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....VERY GOOD (128300 KNOT-FT) DECREASING TO FAIR
                    (42300 KNOT-FT) AFTER MIDNIGHT.

.WEDNESDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....97.
MIN HUMIDITY........9-11 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 12 TO 14 MPH WITH GUSTS TO
                    AROUND 25 MPH.
RIDGE TOP WINDS.....SOUTHWEST 20 TO 25 MPH.
LAL.................1.
CWR.................ZERO PERCENT.
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......5100-6100 FT AGL INCREASING TO 12100-13100 FT
                    AGL IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST 23 TO 25 MPH.
SMOKE DISPERSAL.....VERY GOOD (116000 KNOT-FT) INCREASING TO
                    EXCELLENT (271400 KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY NIGHT...MOSTLY CLEAR. LOWS IN THE MID 50S. SOUTHWEST
WINDS AROUND 11 MPH.
.THURSDAY...PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS IN
THE EVENING. LOWS IN THE MID 50S. HIGHS IN THE MID 80S. WINDS
GENERALLY LESS THAN 10 MPH.
.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
ISOLATED THUNDERSTORMS. LOWS AROUND 50. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.
.SATURDAY...MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE UPPER 70S.
WINDS GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...LIPSON
REQUESTED BY...ERIC BRANDON
REASON FOR REQUEST...WILDFIRE
.TAG 20100810.MIDWE.01/RIW