Area Forecast Discussion
Issued by NWS Seattle/Tacoma, WA

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FXUS66 KSEW 040959
AFDSEW

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SEATTLE WA
300 AM PDT SAT JUL 4 2015

.SYNOPSIS...UNSEASONABLY WARM WEATHER WILL CONTINUE THROUGH THE
MIDDLE OF NEXT WEEK. COOLER WEATHER WILL ARRIVE LATE NEXT WEEK AS AN
UPPER TROUGH REACH THE AREA AND ONSHORE FLOW INCREASES.

&&

.SHORT TERM...WELL ABOVE NORMAL TEMPERATURES WILL CONTINUE THROUGH
MONDAY. LOW LEVEL ONSHORE FLOW IS A BIT STRONGER EARLY THIS MORNING.
THIS MIGHT LEAD TO A COUPLE DEGREES OF COOLING TODAY BUT HIGHS WILL
STILL BE NEAR 90 FOR PARTS OF THE INTERIOR. LOW CLOUDS WILL PROBABLY
GET CLOSE TO THE SOUTH SOUND EARLY THIS MORNING BEFORE BURNING OFF.

LOW LEVEL OFFSHORE FLOW WILL DEVELOP SUNDAY WHICH WILL ALLOW HIGHS
TO WARM A FEW MORE DEGREES. HIGHS WILL BE IN THE MID 80S TO MID 90S
FOR MOST OF THE AREA. EVEN THE COAST WILL BE TOASTY WITH OFFSHORE
FLOW. A HEAT ADVISORY IS IN EFFECT THROUGH SUNDAY EVENING FOR INLAND
AREAS SEATTLE SOUTHWARD.

WEAK ONSHORE FLOW WILL RETURN MONDAY. HIGHS WILL COOL 10-15 DEGREES
AT THE COAST AND THERE WILL LIKELY BE SOME MORNING LOW CLOUDS AGAIN.
INLAND AREAS WILL ONLY SEE A FEW DEGREES OF COOLING. SCHNEIDER

.LONG TERM...WELL ABOVE NORMAL TEMPERATURES WILL CONTINUE THROUGH AT
LEAST WEDNESDAY. UPPER HEIGHTS WILL REMAIN HIGH AND LOW LEVEL
ONSHORE FLOW WILL BE WEAK. THE MODELS SHOW UPPER HEIGHTS BRIEFLY
RISING ACROSS THE AREA ON WEDNESDAY AND THE LOW LEVELS WARMING A
COUPLE DEGREES.

IT LOOKS LIKE THERE WILL FINALLY BE A DISTINCT COOLING TREND
THURSDAY AND FRIDAY ALTHOUGH MODELS DIFFER ON WHICH DAY THE
SIGNIFICANT COOLING WILL COMMENCE. THERE COULD ALSO BE SOME SHOWERS
COMING UP FROM THE SOUTH BY THE END OF THE WEEK ALTHOUGH THE MODELS
ARE NOT GETTING TO EXCITED ABOUT THIS JUST YET. SCHNEIDER

&&

.AVIATION...WESTERN WA WILL REMAIN BETWEEN AN UPPER LEVEL HIGH
OFFSHORE AND AN UPPER TROF OVER CENTRAL CANADA. THIS WILL KEEP THE
FLOW ALOFT FROM THE NW. THE LOW LEVEL FLOW WILL BE NLY. AREAS OF
LIFR CIGS/VSBYS OVER THE COAST ARE ANTICIPATED TO DISSIPATE BY 2000
UTC.

KSEA...VFR. LIGHT AND VARIABLE WINDS WILL BECOME NLY 5-10 KT BY 1900
UTC.

&&

.MARINE...HIGH PRES WILL BUILD OVER BRITISH COLUMBIA TODAY. THIS
COMBINED WITH LOWER PRES OVER OREGON WILL RESULT IN THE FLOW
BECOMING NORTHERLY. OFFSHORE FLOW WILL DEVELOP TONIGHT AND CONTINUE
INTO SUNDAY DUE TO AN AREA OF LOW PRES SETTING UP OFF THE WASHINGTON
COAST.

&&

.SEW WATCHES/WARNINGS/ADVISORIES...
WA...HEAT ADVISORY FOR SEATTLE...BELLEVUE...TACOMA...AND EAST PUGET
     SOUND LOWLANDS ZONES.
PZ...SMALL CRAFT ADVISORY OUTER COASTAL WATERS.

&&

$$

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