FNUS76 KSEW 251525
FWSSEW

SPOT FORECAST FOR JOHNSON PRAIRIE...FORT LEWIS-MCCHORD
NATIONAL WEATHER SERVICE SEATTLE WA
825 AM PDT THU JUL 25 2013

FORECAST IS BASED ON IGNITION TIME OF 1200 PDT ON JULY 25.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN SEATTLE.

.DISCUSSION...AN UPPER RIDGE OF HIGH PRESSURE WILL FLATTEN ON
THURSDAY AS A TROUGH STARTS TO PUSH ACROSS BRITISH COLUMBIA. AN
UPPER LEVEL TROUGH WILL MOVE OVER WESTERN WASHINGTON STARTING
FRIDAY. THUS INCREASING ONSHORE FLOW WILL PRODUCE GRADUALLY COOLER
HIGH TEMPERATURES...MORE STRATUS...AND ELEVATED HUMIDITY OVER THE
LOWLANDS.

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

.TODAY...

SKY/WEATHER.........AREAS OF CLOUDS AND FOG...THEN BECOMING
                    SUNNY AFTER 11 AM PDT.
CWR.................LESS THAN 5%.
MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........
 SLOPE/VALLEY.......VARIABLE OR NORTHWEST WIND 2 TO 4 MPH THROUGH
                    11 AM PDT...THEN NORTHWEST WINDS 5 TO 8 MPH.
MIXING HEIGHT.......1700 FT AGL INCREASING TO 3700 FT AGL LATE
                    IN THE AFTERNOON.
TRANSPORT WINDS.....SOUTHWEST AROUND 6 MPH.
HAINES INDEX........5 OR MODERATE.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLEAR.
CWR.................LESS THAN 5%.
MIN TEMPERATURE.....AROUND 50.
MAX HUMIDITY........90 PERCENT.

.FRIDAY...

SKY/WEATHER.........MOSTLY CLOUDY IN THE MORNING WITH PATCH FOG...
                    THEN BECOMING SUNNY
CWR.................LESS THAN 5%.
MAX TEMPERATURE.....AROUND 78.
MIN HUMIDITY........39 PERCENT.

$$
FORECASTER...MERCER
REQUESTED BY...DAVE CLOUSE
TYPE OF REQUEST...PRESCRIBED
.TAG 20130725.JOHNS.01/SEW