FNUS75 KBOI 172339
FWSBOI

SPOT FORECAST FOR 5 CREEKS...BURNS BLM
NATIONAL WEATHER SERVICE BOISE ID
539 PM MDT THU SEP 17 2009

FORECAST IS BASED ON IGNITION TIME OF 1705 PDT ON SEPTEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...THERMAL AXIS WILL EXPAND OVER 5 CREEKS FRIDAY FOR WARMER AND
   DRIER CONDITIONS AND LIGHT DIURNAL WINDS...

.DISCUSSION...
HIGH PRESSURE CENTERED NORTH OF 5 CREEKS...AND THE SMALL AREA BETWEEN
YANKS CK AND SMYTH CREEK...THROUGH TONIGHT WILL WEAKEN FRIDAY
CHANGING WINDS TO DIURNAL PATTERNS. EXPECT WARMER AND DRIER
CONDITIONS FRIDAY AFTERNOON AS A THERMAL AXIS EXPANDS NORTH. THE
THERMAL AXIS IS EXPECTED TO SHIFT EAST OF 5 CREEKS IN THE WEE
MORNING HOURS SATURDAY. SHIFTING GUSTY WINDS ARE EXPECTED EARLY
SATURDAY WITH A COLD FRONTAL PASSAGE WHILE INCREASING MOISTURE AND
AN UPPER TROUGH BRING A POSSIBILITY OF THUNDERSTORMS BY AFTERNOON.


.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR WITH THIN HIGH CLOUDS AT TIMES.
MIN TEMPERATURE.....48 TO 50.
MAX HUMIDITY........60 TO 65 PERCENT.
WIND - EYE LEVEL....LIGHT DOWNSLOPE 1 TO 3 MPH.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......800 FT AGL.
TRANSPORT WIND......NORTHWEST AROUND 5 MPH.
VENTILATION INDEX...40 POOR.

.FRIDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....78 TO 84.
MIN HUMIDITY........16 TO 21 PERCENT.
WIND - EYE LEVEL....LIGHT UPSLOPE 1 TO 3 MPH IN THE MORNING...
                    BECOMING WEST 2 TO 4 MPH IN THE AFTERNOON.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......6500 FT AGL.
TRANSPORT WIND......SOUTH AROUND 10 MPH.
VENTILATION INDEX...650 GOOD.

$$
FORECASTER...MILLS
REQUESTED BY...DAVE TONEY
TYPE OF REQUEST...PRESCRIBED
.TAG 20090917.5CREE.02/BOI