FNUS75 KBOI 071516
FWSBOI

SPOT FORECAST FOR TREEWELL...BOISE NF
NATIONAL WEATHER SERVICE BOISE ID
916 AM MDT TUE APR 7 2009

FORECAST IS BASED ON IGNITION TIME OF 0930 MDT ON APRIL 07.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

...WARM TODAY WITH HIGH PRESSURE FOLLOWED BY RAIN TOMORROW...

.DISCUSSION...
A RIDGE OF HIGH PRESSURE WILL AMPLIFY OVER THE BOISE FOREST TODAY
AHEAD OF A STRONG LOW PRESSURE SYSTEM THAT IS SPINNING OFF THE COAST
OF CALIFORNIA. THIS WILL RESULT IN TEMPERATURES WELL ABOVE NORMAL
WITH LOCAL WINDS BLOWING DOWNDRAINAGE TOWARD LOWMAN DUE TO AN EASTERLY
SURFACE PRESSURE GRADIENT. A COLD FRONT WILL CROSS THE AREA TOMORROW
MORNING FOLLOWED BY CLOUDS AND RAIN THAT WILL CONTINUE THROUGH THURSDAY.

.TODAY...

SKY/WEATHER.........SUNNY.
MAX TEMPERATURE.....65 TO 70.
MIN HUMIDITY........23 TO 28 PERCENT.
WIND - EYE LEVEL....SOUTH 3 TO 6 MPH.
HAINES INDEX........3 VERY LOW.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WIND......EAST ALONG THE SOUTH FORK OF THE PAYETTE 8 TO 10 MPH.
VENTILATION INDEX...550 GOOD.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY AFTER MIDNIGHT.
MIN TEMPERATURE.....30 TO 35.
MAX HUMIDITY........80 TO 90 PERCENT.
WIND - EYE LEVEL....SOUTH 5 TO 10 MPH.
HAINES INDEX........2 VERY LOW.
MIXING HEIGHT.......1500 FT AGL.
TRANSPORT WIND......EAST AROUND 10 MPH.
VENTILATION INDEX...200 FAIR.

.WEDNESDAY...

SKY/WEATHER.........CLOUDY. RAIN AND SNOW SHOWERS THROUGH THE DAY WITH
                    A SLIGHT CHANCE OF THUNDERSTORMS.
MAX TEMPERATURE.....45 TO 55.
MIN HUMIDITY........50 TO 60 PERCENT.
WIND - EYE LEVEL....EAST AROUND 4 MPH IN THE MORNING...BECOMING NORTH
                    4 TO 8 MPH IN THE AFTERNOON.
HAINES INDEX........2 VERY LOW.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WIND......NORTHWEST 8 TO 15 MPH WITH GUSTS TO 20 MPH.
VENTILATION INDEX...500 GOOD.

$$
FORECASTER...DECKER
REQUESTED BY...REBECCA SWENSON
TYPE OF REQUEST...PRESCRIBED
.TAG 20090407.TREEW.01/BOI