FNUS75 KRIW 240045
FWSRIW

SPOT FORECAST FOR CRYSTAL...IA TDC
NATIONAL WEATHER SERVICE RIVERTON WY
645 PM MDT MON AUG 23 2010

FORECAST IS BASED ON REQUEST TIME OF 1819 MDT ON AUGUST 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

DRY CONDITIONS WITH A WARMING TREND WILL CONTINUE OVER THE NEXT FEW
DAYS. MAINLY LIGHT AND TERRAIN DRIVEN WINDS ARE EXPECTED OVER THE
NEXT COUPLE OF DAYS. WINDIER CONDITIONS ARE EXPECTED TO DEVELOP
THURSDAY AND FRIDAY.

...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.....32-36 VALLEY. 40-45 RIDGE TOP.
MAX HUMIDITY........90+ PERCENT VALLEY. 70 PERCENT RIDGE TOP.
20 FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 2-4 MPH.
RIDGE TOP WINDS.....WEST NORTHWEST 5 TO 10 MPH...BECOMING LIGHT AND
                    VARIABLE BY MIDNIGHT.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME
                    DOMINATED FIRE GROWTH.
MIXING HEIGHT.......4500-5500 FT AGL DECREASING TO 600 FT AGL
                    BY MIDNIGHT.
TRANSPORT WINDS.....WEST NORTHWEST 5 TO 10 MPH...BECOMING LIGHT AND
                    VARIABLE BY MIDNIGHT.
SMOKE DISPERSAL.....GOOD (80900 KNOT-FT) DECREASING TO POOR (15700
                    KNOT-FT) AFTER MIDNIGHT.

.TUESDAY...
SKY/WEATHER.........SUNNY (0-10 PERCENT).
MAX TEMPERATURE.....69-74.
MIN HUMIDITY........18-22 PERCENT.
20 FOOT WINDS.......UPSLOPE/UPVALLEY 3-6 MPH. GUSTS UP TO 12 MPH.
RIDGE TOP WINDS.....LIGHT AND VARIABLE...BECOMING WEST SOUTHWEST
                    5-10 MPH BETWEEN 1000 AND NOON.  GUSTS AROUND
                    15 MPH IN THE AFTERNOON.
LAL.................1.
CHC OF WETTING RAIN.ZERO PERCENT.
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED
                    FIRE GROWTH.
MIXING HEIGHT.......2500 FT AGL INCREASING TO 6000 FT AGL
                    IN THE AFTERNOON.
TRANSPORT WINDS.....WEST SOUTHWEST 5-10 MPH.
SMOKE DISPERSAL.....POOR (27200 KNOT-FT) INCREASING TO GOOD (77600
                    KNOT-FT) IN THE AFTERNOON.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...CLEAR. LOWS AROUND 40. WINDS GENERALLY LESS THAN
10 MPH.

.WEDNESDAY...CLEAR. LOWS AROUND 40. HIGHS IN THE UPPER 70S. WINDS
GENERALLY LESS THAN 10 MPH.

.THURSDAY...MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER
80S. WEST WINDS 10-15 MPH...WITH LOW RH. GUSTS TO 25 MPH.

.FRIDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 70S. WEST
WINDS 10-15 MPH.

.SATURDAY...PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE MID 70S. WINDS
GENERALLY LESS THAN 10 MPH.

$$

FORECASTER...MURRELL
REQUESTED BY...BULL OBS
REASON FOR REQUEST...WILDFIRE
.TAG 20100823.CRYST.01/RIW