FNUS75 KBYZ 201121
FWSBYZ

SPOT FORECAST FOR SHEEP CREEK...USFS
NATIONAL WEATHER SERVICE BILLINGS MT
521 AM MDT TUE AUG 20 2013

FORECAST IS BASED ON REQUEST TIME OF 0505 MDT ON AUGUST 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

...PLUME DOMINANT ACTIVITY POSSIBLE THIS AFTERNOON...

ANOTHER HOT AND DRY DAY OVER THE FIRE AREA. WINDS WILL BE WEAKER
AT RIDGETOP ELEVATION TODAY...BUT THERMAL GUSTS TO 20 MPH WILL BE
POSSIBLE MID SLOPE THIS AFTERNOON INTO THE EVENING. CANT RULE OUT
AN ISOLATED DRY THUNDERSTORM LATE IN THE DAY...BUT MOST
THUNDERSTORM ACTIVITY SHOULD STAY SOUTH OF THE FIRE. GUSTS TO 50
MPH WILL BE POSSIBLE WITH ANY STORMS NEAR THE FIRE TODAY.
MONSOONAL MOISTURE WILL MOVE INTO THE FIRE AREA WEDNESDAY WITH
HIGHER RH VALUES AND SCATTERED THUNDERSTORMS WEDNESDAY AFTERNOON.
CHAMBERS

.TODAY...

SKY/WEATHER.........SUNNY. ISOLATED THUNDERSTORMS IN THE AFTERNOON.
CWR.................5 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....72-77.
MIN HUMIDITY........13-18 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......UP SLOPE/VALLEY 5 TO 10 MPH. OCCASIONAL THERMAL
                    GUSTS TO 20 MPH IN THE AFTERNOON. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    AFTERNOON.
 RIDGETOP...........SOUTHWEST 10 TO 15 MPH...GUSTS TO 25 MPH IN THE
                    AFTERNOON.
HAINES INDEX........5.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. ISOLATED THUNDERSTORMS IN THE
                    EVENING.
CWR.................5 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MIN TEMPERATURE.....51-54.
MAX HUMIDITY........53-58 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......DOWN SLOPE/VALLEY 3 TO 6 MPH. GUSTY AND ERRATIC
                    WINDS EXPECTED NEAR THUNDERSTORMS IN THE
                    EVENING.
 RIDGETOP...........WEST 5 TO 15 MPH.
HAINES INDEX........4.

.WEDNESDAY...

SKY/WEATHER.........MOSTLY SUNNY. SCATTERED THUNDERSTORMS IN THE
                    AFTERNOON.
CWR.................20 PERCENT.
LAL.................3...9 TO 15 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....70-76.
MIN HUMIDITY........19-25 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......UP SLOPE/VALLEY 5 TO 10 MPH. GUSTY
                    AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
                    IN THE AFTERNOON.
 RIDGETOP...........SOUTHWEST 8 TO 14 MPH.
HAINES INDEX........4.

$$
FORECASTER...CHAMBERS
REQUESTED BY...SHELBY MAJORS
TYPE OF REQUEST...WILDFIRE
.TAG 20130820.SHEEP.01/BYZ