FNUS75 KBOI 141322
FWSBOI

SPOT FORECAST FOR CASTRO...BOISE NF
NATIONAL WEATHER SERVICE BOISE ID
722 AM MDT WED SEP 14 2011

FORECAST IS BASED ON REQUEST TIME OF 1703 MDT ON SEPTEMBER 13.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...HAINES 5 TODAY WITH EXCELLENT MIXING EACH AFTERNOON...
...LOCALLY BREEZY WITH A COLD FRONTAL PASSAGE THURSDAY...
...NOT AS HOT OR DRY FRIDAY THROUGH THE WEEKEND...

.DISCUSSION...
LINGERING MOISTURE AND A WEAK LOW OVER THE CENTRAL MOUNTAINS THIS
AFTERNOON WILL KEEP A SLIGHT CHANCE OF A THUNDERSTORM OVER CASTRO
FIRE 1500-2100 MDT TODAY. AN UPPER LEVEL RIDGE WITH MORE STABLE
AIR WILL SHIFT INLAND AND FINALLY OVER THE FIRE TONIGHT WHICH WILL
ENHANCE DOWNSLOPE WINDS. GUSTY SW WINDS WILL DEVELOP AROUND NOON
THURSDAY AND GUST STRONGEST IN THE MID AFTERNOON AS THE FRONT GOES
THROUGH. MODELS STILL VARY ON HOW MUCH RAIN WILL FALL WITH SHOWERS
AND POSSIBLE THUNDERSTORMS WITH THE FRONT AND THE ASSOCIATED UPPER
TROUGH PASSAGE FRIDAY BUT THERE IS A SLIGHT CHANCE OF WETTING
RAIN.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY THIS MORNING...THEN BECOMING MOSTLY
                    CLOUDY WITH A 20 PERCENT CHANCE OF A THUNDERSTORM
                    AFTER 1500 MDT.
MAX TEMPERATURE.....66 TO 78.
MIN HUMIDITY........18 TO 23 PERCENT.
WIND - EYE LEVEL....LIGHT UPSLOPE 1 TO 3 MPH IN THE MORNING...
                    BECOMING UPVALLEY 4 TO 7 MPH THIS AFTERNOON.
HAINES INDEX........5 MODERATE.
MIXING HEIGHT.......11000 FT AGL.
CWR /0.10 INCH/.....5 PERCENT.
TRANSPORT WIND......WEST AROUND 10 MPH.
VENTILATION INDEX...1100 EXCELLENT.

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY. A 20 PERCENT CHANCE OF A
                    THUNDERSTORM UNTIL 2100 MDT.
MIN TEMPERATURE.....44 TO 51.
MAX HUMIDITY........47 TO 66 PERCENT.
WIND - EYE LEVEL....LIGHT DOWNSLOPE IN THE EVENING...BECOMING NORTHEAST
                    4 TO 7 MPH AFTER MIDNIGHT WITH GUSTS UP TO 12 MPH.
HAINES INDEX........4 LOW.
CWR /0.10 INCH/.....5 PERCENT.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WIND......NORTHEAST AROUND 8 MPH.
VENTILATION INDEX...80 POOR.

.THURSDAY...

SKY/WEATHER.........SUNNY...THEN BECOMING PARTLY CLOUDY WITH A 20
                    PERCENT CHANCE OF AFTERNOON SHOWERS
                    AND THUNDERSTORMS.
MAX TEMPERATURE.....65 TO 77.
MIN HUMIDITY........22 TO 28 PERCENT.
WIND - EYE LEVEL....NORTHEAST 4 TO 7 MPH IN THE MORNING BECOMING SOUTHWEST
                    4 TO 7 MPH ABOUT NOON...INCREASING TO 6 TO 12 MPH WITH
                    RIDGETOP GUSTS UP TO AROUND 20 MPH IN THE AFTERNOON.
HAINES INDEX........4 LOW.
CWR /0.10 INCH/.....5 PERCENT.
MIXING HEIGHT.......10500 FT AGL.
TRANSPORT WIND......SOUTHWEST AROUND 15 MPH.
VENTILATION INDEX...1575 EXCELLENT.

$$
FORECASTER...MILLS
REQUESTED BY...IC
TYPE OF REQUEST...WILDFIRE
.TAG 20110913.CASTR.01/BOI