FNUS76 KSEW 061345
FWSSEW

SPOT FORECAST FOR WEST ROCKY UNIT 1...THE NATURE CONSERVANCY
NATIONAL WEATHER SERVICE SEATTLE WA
645 AM PDT TUE SEP 6 2011

FORECAST IS BASED ON IGNITION TIME OF 1200 PDT ON SEPTEMBER 06.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...A FLAT UPPER RIDGE OVER THE PACIFIC NORTHWEST WILL
STRENGTHEN OVER THE NEXT FEW DAYS AND PERSIST INTO THIS WEEKEND.
FROM WEDNESDAY THROUGH SATURDAY...THIS WILL PUSH A STRONG SUBSIDENCE
INVERSION DOWN INTO THE LOWER ELEVATIONS...LEAVING MID AND HIGH
ELEVATIONS...GENERALLY ABOVE 2000 FEET...EXPOSED TO AN EXTREMELY DRY
AND UNSTABLE AIR MASS...ESPECIALLY ON WEDNESDAY AND THURSDAY...AND
POSSIBLY BEYOND. MID-LEVEL HAINES 6 CONDITIONS ARE FORECAST FOR
SEVERAL DAYS BEGINNING ON WEDNESDAY.

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

.TODAY...

SKY/WEATHER.........SUNNY...EXCEPT PATCHY MORNING LOW CLOUDS AND FOG.
MAX TEMPERATURE.....AROUND 83.
MIN HUMIDITY........37 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......LIGHT WIND BECOMING NORTH 5 TO 7 MPH IN THE
  AFTERNOON.
MIXING HEIGHT.......0 FT AGL INCREASING TO 4300 FT AGL LATE IN THE
MORNING.
TRANSPORT WINDS.....NORTHEAST AROUND 5 MPH.
HAINES INDEX........5 OR MODERATE.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
MIN TEMPERATURE.....AROUND 48.
MAX HUMIDITY........96 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......NORTH WINDS 3 TO 7 MPH.
MIXING HEIGHT.......4300 FT AGL DECREASING TO 0 FT AGL LATE IN THE
                    EVENING.
TRANSPORT WINDS.....NORTHEAST AROUND 9 MPH.
HAINES INDEX........5 OR MODERATE.

$$

FORECASTER...MCDONNAL
REQUESTED BY...MASON MCKINLEY
TYPE OF REQUEST...PRESCRIBED
.TAG 20110906.WESTR.01/SEW