FNUS75 KBYZ 091410
FWSBYZ

SPOT FORECAST FOR BROKEN JAW UNIT 12...NORTHLERN CHEYENNE
NATIONAL WEATHER SERVICE BILLINGS MT
810 AM MDT WED MAY 9 2012

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON MAY 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...

...COLD FRONTAL PASSAGE THURSDAY MORNING...

IT WILL BE WARM AND DRY AT THE BURN SITE TODAY...WITH THE RELATIVE
HUMIDITY FALLING BELOW 25 PERCENT BY NOON. EXPECT MINIMUM HUMIDITY
AS LOW AS 15 PERCENT THIS AFTERNOON AND SOUTHWEST WINDS THAT COULD
GUST TO AROUND 16 MPH AT TIMES. THE HUMIDITY WILL RECOVER TO ABOUT
50 PERCENT TONIGHT. A COLD FRONT WILL MOVE THROUGH THE BURN SITE
ON THURSDAY MORNING...WHICH WILL RESULT IN A SHIFT OF THE WINDS TO
THE NORTHWEST. THE NORTHWEST WINDS WILL GUST TO 35 MPH ON THURSDAY
AFTERNOON. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL ALSO
OCCUR ON THURSDAY BEHIND THE FRONT. SCHULTZ/TWH

.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....77-82.
MIN HUMIDITY........15-20 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 7 TO 12 MPH. A FEW GUSTS TO
                    AROUND 16 MPH.
 RIDGETOP...........WEST 10 TO 15 MPH.
MIXING HEIGHT.......9000 FT AGL.
MIXING WINDS........WEST 10 TO 15 MPH.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....50-55.
MAX HUMIDITY........47-52 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 15 MPH.
 RIDGETOP...........SOUTHWEST 15 TO 25 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........SOUTHWEST 10 TO 20 MPH.

.THURSDAY...

SKY/WEATHER.........PARTLY SUNNY. SCATTERED RAIN SHOWERS AND
                    ISOLATED THUNDERSTORMS IN THE AFTERNOON.
CWR.................14 PERCENT.
LAL.................2...1 TO 8 STRIKES/15 MIN/CELL.
MAX TEMPERATURE.....61-66.
MIN HUMIDITY........34-39 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......WEST-SOUTHWEST WINDS 5 TO 10 MPH EARLY IN
                    THE MORNING WILL BECOME NORTHWEST 15 TO
                    25 MPH BY ABOUT 9 AM. GUSTS TO 35 MPH IN
                    THE AFTERNOON. GUSTY AND ERRATIC WINDS
                    EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON.
 RIDGETOP...........NORTHWEST 20 TO 30 MPH.
MIXING HEIGHT.......5600 FT AGL.
MIXING WINDS........NORTHWEST 20 TO 30 MPH.

$$
FORECASTER...SCHULTZ/HUMPHREY
REQUESTED BY...MIKE BEARCOMESOUT
TYPE OF REQUEST...PRESCRIBED
.TAG 20120509.BROKE.01/BYZ