FNUS76 KSEW 081726
FWSSEW

SPOT FORECAST FOR POWERLINE 2...DNR
NATIONAL WEATHER SERVICE SEATTLE WA
1026 AM PDT MON OCT 8 2012

FORECAST IS BASED ON REQUEST TIME OF 1018 PDT ON OCTOBER 08.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...CONDITIONS OVER THE FIRE SITE FOR THE FIRST HALF OF
THIS WEEK WILL BE DOMINATED BY HIGH PRESSURE...MEANING MAINLY
LIGHT...TERRAIN DRIVEN WINDS AND OVERALL DRY CONDITIONS. A SLOW
SHIFT IN THE FLOW TO A MORE ONSHORE FLOW WILL INCREASE RELATIVE
HUMIDITY SLIGHTLY...BUT THIS WILL BE OFFSET BY LOW-LEVEL
SUBSIDENCE INVERSIONS CREATED BY THE LINGERING HIGH PRESSURE
OVERHEAD. THESE INVERSIONS WILL ALSO HINDER OVERNIGHT HUMIDITY
RECOVERIES. THIS HIGH PRESSURE WILL BREAK DOWN BY LATE IN THE
WEEK...RESULTING IN INCREASED CLOUD COVER AND A CHANCE OF
PRECIPITATION THIS WEEKEND.

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

.TUESDAY...

SKY/WEATHER.........PARTLY SUNNY. AREAS OF FOG IN THE MORNING.
CWR.................0%.
MAX TEMPERATURE.....AROUND 65.
MIN HUMIDITY........46 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......SOUTHWEST WINDS 4 TO 7 MPH.
MIXING HEIGHT.......400 FT AGL INCREASING TO 2500 FT AGL LATE IN
                    THE MORNING.
TRANSPORT WINDS.....SOUTH AROUND 5 MPH.
HAINES INDEX........3 OR VERY LOW.
LAL.................1.

.FORECAST DAYS 3 THROUGH 5...
.WEDNESDAY...
MOSTLY CLOUDY. PATCHY FOG. LOWS AROUND 40. HIGHS IN THE LOWER 60S.
SOUTH WINDS 3 TO 6 MPH.
.THURSDAY...
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S.
SOUTHWEST WINDS 3 TO 4 MPH.
.FRIDAY...
CLOUDY WITH A CHANCE OF RAIN. LOWS IN THE LOWER 40S. HIGHS AROUND
60. SOUTH WINDS 3 TO 6 MPH.

$$
FORECASTER...SMR
REQUESTED BY...CHAD PICKERING
TYPE OF REQUEST...WILDFIRE
.TAG 20121008.POWER.01/SEW