FNUS75 KBOI 021549
FWSBOI

SPOT FORECAST FOR SOUTH MALHEUR LAKE RX...OR-MAR
NATIONAL WEATHER SERVICE BOISE ID
849 AM MST WED DEC 2 2009

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

...COLD AND DRY...

.DISCUSSION...
UPPER HIGH PRESSURE OFF THE OREGON/WASHINGTON COAST WILL PERSIST
THROUGH THURSDAY WITH DRY NORTHERLY FLOW OVER THE BURN AREA. SURFACE
HIGH PRESSURE IS NORTHEAST OF THE AREA FOR LIGHT NORTH TO NORTHEAST
WINDS. SUNSHINE WILL WARM THE GROUND EACH DAY TO PROVIDE SOME MIXING
BUT STRONG INVERSION WILL REMAIN AT ABOUT THE 6000 FOOT MSL LEVEL.
STRONG INVERSION AT NIGHT WILL PREVENT ANY VERTICAL MIXING.


.TODAY...

SKY/WEATHER.........MOSTLY SUNNY.
MAX TEMPERATURE.....NEAR 40.
MIN HUMIDITY........50 TO 55 PERCENT.
WIND - EYE LEVEL....LESS THAN 3 MPH IN THE MORNING...BECOMING NORTH
                    UP TO 8 MPH IN THE AFTERNOON.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......2000 FT AGL.
TRANSPORT WIND......NORTH AROUND 5 MPH.
VENTILATION INDEX...100 POOR.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....10 TO 15.
MAX HUMIDITY........85 TO 90 PERCENT.
WIND - EYE LEVEL....NORTHEAST 3 TO 4 MPH IN THE EVENING...BECOMING
                    LESS THAN 3 MPH AFTER 9PM.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WIND......NORTHEAST AROUND 5 MPH.
VENTILATION INDEX...25 POOR.

.THURSDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....35 TO 40.
MIN HUMIDITY........34 TO 39 PERCENT.
WIND - EYE LEVEL....LESS THAN 3 MPH IN THE MORNING...BECOMING
                    NORTHEAST AROUND 3 MPH IN THE AFTERNOON.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......2000 FT AGL.
TRANSPORT WIND......EAST AROUND 5 MPH.
VENTILATION INDEX...100 POOR.

$$
FORECASTER...FLATT
REQUESTED BY...SHANE THEALL
TYPE OF REQUEST...PRESCRIBED
.TAG 20091202.SOUTH.02/BOI