FNUS75 KBYZ 021341
FWSBYZ

SPOT FORECAST FOR BIG DAY WUI...BIA, CROW AGENCY
NATIONAL WEATHER SERVICE BILLINGS MT
741 AM MDT WED NOV 2 2011

FORECAST IS BASED ON IGNITION TIME OF 1100 MDT ON NOVEMBER 02.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...STRONG AND GUSTY SOUTHWEST WINDS OVER BURN SITE TODAY AND THURSDAY...

.DISCUSSION...

SOUTHWEST WINDS WILL INCREASE TODAY OVER THE BURN SITE. WINDS
WILL BE REACH 20 MPH SUSTAINED THIS AFTERNOON...WITH GUSTS AROUND
35 MPH DURING TODAYS BURN PERIOD. STRONG GUSTY WINDS WILL
CONTINUE OVERNIGHT...WITH GUSTS APPROACHING 40 MPH. STRONG
GUSTY WINDS WILL BEGIN TO TAPER OFF THURSDAY AFTERNOON BUT REMAIN
ABOVE 20 MPH SUSTAINED UNTIL THURSDAY EVENING. HIGH PRESSURE
ALOFT WILL BRING WARMER TERMPERATURES AND DRY CONDITIONS TO THE
BURN SITE FOR THE NEXT COUPLE OF DAYS. TEMPERATURES WILL RISE TO
THE 40S TODAY...AND 50S FOR THURSDAY. RH VALUES WILL FALL QUICKLY
IN RESPONSE TO THE WARMER TEMPERATURES AND THE HIGH
WINDS...DROPPING TO AROUND 25 PERCENT TODAY...AND INTO THE LOW TO
MID TEENS THURSDAY. ANOTHER STORM SYSTEM WILL MOVE OVER THE BURN
SITE FRIDAY NIGHT.

.TODAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....43-48.
MIN HUMIDITY........25-30 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 10 MPH IN THE MORNING
                    INCREASING TO 10 TO 20 MPH IN THE AFTERNOON.
 RIDGETOP...........SOUTHWEST 10 TO 20 MPH.
MIXING HEIGHT.......5200 FT AGL.
MIXING WINDS........SOUTHWEST 15 TO 25 MPH.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MIN TEMPERATURE.....27-32.
MAX HUMIDITY........44-49 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 15 TO 25 MPH. GUSTS UP TO 40
                    MPH OVERNIGHT.
 RIDGETOP...........SOUTHWEST 15 TO 30 MPH.
MIXING HEIGHT.......300 FT AGL.
MIXING WINDS........SOUTHWEST 15 TO 30 MPH.

.THURSDAY...

SKY/WEATHER.........SUNNY.
CWR.................0 PERCENT.
LAL.................1...NO THUNDERSTORMS.
MAX TEMPERATURE.....51-56.
MIN HUMIDITY........17-22 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 15 TO 25 MPH.
 RIDGETOP...........SOUTHWEST 20 TO 35 MPH.
MIXING HEIGHT.......2200 FT AGL.
MIXING WINDS........SOUTHWEST 20 TO 35 MPH.

$$
FORECASTER...GILSTAD/HOOLEY
REQUESTED BY...BRYCE ROGERS
TYPE OF REQUEST...PRESCRIBED
.TAG 20111102.BIGDA.01/BYZ