FNUS75 KBOI 011409
FWSBOI

SPOT FORECAST FOR MACK PINE...BOISE NF
NATIONAL WEATHER SERVICE BOISE ID
809 AM MDT TUE NOV 1 2011

FORECAST IS BASED ON IGNITION TIME OF 1030 MDT ON NOVEMBER 01.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...BREEZY WITH EXCELLENT MIXING TODAY THEN INVERSION RETURNS WEDNESDAY...

.DISCUSSION...
STRONG HIGH PRESSURE WILL BUILD OVER CENTRAL IDAHO TODAY KEEPING
THE MACK PINE UNDER STRONG GRADIENT WINDS FROM THE NORTHWEST.
RIDGETOP GUSTS COULD REACH 30 MPH 1PM TO 4PM BECAUSE UPPER JET
WINDS WILL CROSS THE BURN THIS AFTERNOON. SKIES WILL BE CLEAR.
TEMPERATURES WILL BE DOWN BY 10 DEGREES FROM MONDAY AND
HUMIDITIES WILL BE 10 TO 15 PERCENT DRIER. A SUBSIDENCE INVERSION
ALOFT WILL COMBINE WITH VERY STRONG NOCTURNAL INVERSIONS FOR GOOD
HUMIDITY RECOVERIES TONIGHT BUT LIMITED MIXING WEDNESDAY.

.TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....40 TO 43.
MIN HUMIDITY........36 TO 38 PERCENT.
WIND - EYE LEVEL....NORTHWEST 6 TO 9 MPH WITH GUSTS TO 14 MPH.
HAINES INDEX........2 VERY LOW.
MIXING HEIGHT.......5000 FT AGL.
TRANSPORT WIND......NORTH AROUND 15 MPH.
VENTILATION INDEX...750 EXCELLENT.

.TONIGHT...

SKY/WEATHER.........CLEAR.
MIN TEMPERATURE.....19 TO 21.
MAX HUMIDITY........77 TO 87 PERCENT.
WIND - EYE LEVEL....NORTH 4 TO 7 MPH WITH GUSTS TO 11 MPH IN THE EARLY
                    EVENING...WEAKENING TO DOWNSLOPE 3 TO 5 MPH BY MIDNIGHT.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......1500 FT AGL.
TRANSPORT WIND......NORTHEAST AROUND 10 MPH.
VENTILATION INDEX...150 POOR.

.WEDNESDAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....48 TO 50.
MIN HUMIDITY........24 TO 26 PERCENT.
WIND - EYE LEVEL....LIGHT DOWNSLOPE EARLY IN THE MORNING THEN UPSLOPE
                    3 TO 5 MPH IN THE AFTERNOON. RIDGETOP/SHAFER BUTTE
                    WINDS SOUTHEAST 15 MPH IN THE AFTERNOON.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WIND......SOUTHEAST AROUND 15 MPH.
VENTILATION INDEX...450 FAIR.

$$
FORECASTER...MILLS
REQUESTED BY...ALLYN SPANFELLNER
TYPE OF REQUEST...PRESCRIBED
.TAG 20111101.MACKP.01/BOI