FNUS75 KBYZ 181636
FWSBYZ

SPOT FORECAST FOR SHELL PILES RX...USFS BIGHORN NF
NATIONAL WEATHER SERVICE BILLINGS MT
936 AM MST THU NOV 18 2010

FORECAST IS BASED ON IGNITION TIME OF 1200 MST ON NOVEMBER 18.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

...VERY STRONG RIDGETOP WINDS TODAY...
...WINTER WEATHER ARRIVES TONIGHT AND STAYS FOR NEXT WEEK...

WINDY BUT DRY CONDITIONS EXPECTED ABOVE THE BURN SITE TODAY AHEAD
OF A STRONG COLD FRONT. THE FRONT WILL MOVE OVER THE AREA TONIGHT
BRINGING COLDER AIR AND A CHANCE FOR SNOW. WINDS WILL TURN WEST
BUT EASE FOR FRIDAY. THE COLD AND SNOWY PATTERN WILL PERSIST
THROUGH THE WEEKEND INTO EARLY NEXT WEEK.


.TODAY...

SKY/WEATHER.........PARTLY SUNNY.
CWR.................0 PERCENT.
MAX TEMPERATURE.....31-36.
MIN HUMIDITY........33-38 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTH WINDS 15 TO 25 MPH. GUSTS UP TO 30 MPH IN
                    THE AFTERNOON.
 RIDGETOP...........WEST 50 TO 70 MPH.
MIXING HEIGHT.......2800 FT AGL.
MIXING WINDS........SOUTHWEST 25 TO 40 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY. ISOLATED SNOW SHOWERS IN THE
                    EVENING...THEN SCATTERED SNOW SHOWERS
                    OVERNIGHT.
CWR.................13 PERCENT.
MIN TEMPERATURE.....17-22.
MAX HUMIDITY........65-70 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 15 TO 25 MPH. GUSTS UP TO 30
                    MPH IN THE EVENING.
 RIDGETOP...........WEST 45 TO 65 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........SOUTHWEST 20 TO 35 MPH.

.FRIDAY...

SKY/WEATHER.........MOSTLY CLOUDY WITH SCATTERED SNOW SHOWERS.
CWR.................17 PERCENT.
MAX TEMPERATURE.....26-31.
MIN HUMIDITY........52-57 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 10 TO 20 MPH.
 RIDGETOP...........WEST 35 TO 50 MPH.
MIXING HEIGHT.......1300 FT AGL.
MIXING WINDS........SOUTHWEST 15 TO 30 MPH.

$$
FORECASTER...SOLUM
REQUESTED BY...MARVIN MATTHIESEN
TYPE OF REQUEST...PRESCRIBED
.TAG 20101118.SHELL.01/BYZ