FNUS75 KBOI 281125
FWSBOI

SPOT FORECAST FOR 5 CR  RX...BURNS BLM
NATIONAL WEATHER SERVICE BOISE ID
525 AM MDT WED SEP 28 2011

FORECAST IS BASED ON IGNITION TIME OF 1200 PDT ON SEPTEMBER 28.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...A MORE STABLE AIR MASS WITH LIGHT WINDS TODAY...

.DISCUSSION...
HIGH PRESSURE TO THE NORTH WILL BRING LIGHT WINDS AND NOTICEABLY LOWER
MIXING HEIGHTS TO THE BURN SITE TODAY LIMITING SMOKE DISPERSION. THE
POSITION OF THE HIGH WILL BRING A MORE NORTHERLY COMPONENT TO THE WIND
WHICH WILL BE LIGHT BUT COULD SHIFT IN DIRECTION BETWEEN NORTHWEST TO
NORTHEAST DURING THE AFTERNOON. WARMER AND DRIER CONDITIONS DEVELOP
THURSDAY AS WINDS INCREASE OUT OF THE SOUTH-SOUTHWEST.

.TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....74 TO 78.
MIN HUMIDITY........22 TO 27 PERCENT.
WIND - EYE LEVEL....WEST 3 TO 5 MPH IN THE MORNING...SHIFTING
                    TO THE NORTH-NORTHWEST UP TO 5 MPH IN THE
                    AFTERNOON.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WIND......NORTH-NORTHEAST AROUND 5 MPH.
VENTILATION INDEX...200 FAIR.

.TONIGHT...

SKY/WEATHER.........CLEAR.
MIN TEMPERATURE.....51 TO 56.
MAX HUMIDITY........50 TO 55 PERCENT.
WIND - EYE LEVEL....DOWNSLOPE 2 TO 4 MPH.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......2000 FT AGL.
TRANSPORT WIND......SOUTHEAST AROUND 5 MPH.
VENTILATION INDEX...100 POOR.

.THURSDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....85 TO 90.
MIN HUMIDITY........13 TO 18 PERCENT.
WIND - EYE LEVEL....SOUTH-SOUTHWEST 5 TO 8 MPH WITH GUSTS TO 13 MPH.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......7000 FT AGL.
TRANSPORT WIND......SOUTHWEST AROUND 15 MPH.
VENTILATION INDEX...1050 EXCELLENT.

$$
FORECASTER...GROENERT
REQUESTED BY...BURN BOSS
TYPE OF REQUEST...PRESCRIBED
.TAG 20110928.5CRRX.01/BOI