FNUS76 KSEW 171537
FWSSEW

SPOT FORECAST FOR SOUTH WEIR NORTH WEST...FORT LEWIS-MCCHORD
NATIONAL WEATHER SERVICE SEATTLE WA
837 AM PDT MON SEP 17 2012

FORECAST IS BASED ON IGNITION TIME OF 0830 PDT ON SEPTEMBER 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...A FAIRLY LIGHT NORTH TO NORTHEAST FLOW WILL BE IN
PLACE TODAY WITH RELATIVELY LOW MIXING HEIGHTS. THE LOW LEVEL AIR
MASS WILL BE SOMEWHAT UNSTABLE THIS AFTERNOON BUT ONLY UP TO THE
INVERSIONS LAYER WHICH IS SITTING AROUND 2500-2800 FT AGL. WINDS
WILL GO CALM TONIGHT NOT TOO LONG AFTER SUNSET.

 FORECAST FOR 20 FOOT WIND SPEED (VALLEYS AND RIDGE TOPS) ARE 10
 MINUTE AVERAGES REFLECTING RAWS WINDS.

.TODAY...

MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........34 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......LIGHT VARIABLE WIND BECOMING NORTH TO NORTHEAST
                    3 TO 6 MPH.
MIXING HEIGHT.......NEAR 1200 FT AGL THIS MORNING RISING TO 2100
                    FT AGL THIS AFTERNOON.
TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH.
HAINES INDEX........4 OR LOW.

.TONIGHT...

MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........89 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTHEAST WINDS 2 TO 5 MPH BECOMING CALM LATE
                    EVENING HOURS.
MIXING HEIGHT.......NEAR 2000 FT AGL DROPPING TO 400 FT AGL IN
                    THE EVENING.
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
HAINES INDEX........4 OR LOW.

$$
FORECASTER...CERNIGLIA
REQUESTED BY...DAN LEEPER
TYPE OF REQUEST...PRESCRIBED
.TAG 20120917.SOUTH.01/SEW