FNUS76 KSEW 180603
FWSSEW

SPOT FORECAST FOR RICHERT ROAD...NPS OLYMPIC
NATIONAL WEATHER SERVICE SEATTLE WA
1103 PM PDT TUE AUG 17 2010

FORECAST IS BASED ON REQUEST TIME OF 2224 PDT ON AUGUST 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...THE DRY AND UNSTABLE AIR MASS WILL CONTINUE TO MOVE TO
THE EAST OVERNIGHT DUE TO STRENGTHENING OF THE ONSHORE PRESSURE
GRADIENT. TEMPERATURES ALOFT WERE ALSO GRADUALLY COOLING AS THE UPPER
RIDGE MOVES OFF TO THE EAST. THE MARINE LAYER WILL DEEPEN FURTHER
WEDNESDAY NIGHT INTO THURSDAY...FORCING MOISTURE UP TO NEAR 5000
FEET. THIS WILL RESULT IN HIGHER HUMIDITIES AND COOLER TEMPERATURES.

A FAIRLY DEEP AND COOL UPPER TROUGH WILL SETTLE ALONG THE WEST COAST
THIS WEEKEND FOR MUCH BELOW NORMAL TEMPERATURES AND HIGHER HUMIDITIES.
THIS TROUGH WILL EXIT THE REGION MONDAY FOR A RETURN TO MORE SEASONAL
TEMPERATURES EARLY NEXT WEEK.

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

.WEDNESDAY...
SKY/WEATHER.........CLOUDY IN THE MORNING...BECOMING MOSTLY SUNNY
                    IN THE AFTERNOON.
CWR.................LESS THAN 10%.
MAX TEMPERATURE.....AROUND 68.
MIN HUMIDITY........65 PERCENT.
WIND (20 FT)........
 LWR SLP/VALLEY.....SOUTHWEST WINDS 4 TO 8 MPH.
MIXING HEIGHT.......600 FT AGL INCREASING TO 3800 FT AGL LATE IN
                    THE MORNING.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH.
HAINES INDEX........4 OR LOW.
LAL.................1.

$$
FORECASTER...05
REQUESTED BY...DOREEN SMITH
TYPE OF REQUEST...WILDFIRE
.TAG 20100817.RICHE.01/SEW