textproduct: Seattle/Tacoma

SYNOPSIS

Warm and dry conditions are expected today, followed by a brief return to clouds and slightly cooler temperatures tomorrow. High pressure rebuilds in time for the weekend, ushering in highs in the upper 70s to 80s. Onshore flow resumes by early next week.

SHORT TERM /TODAY THROUGH SATURDAY/

Pleasant temperatures in the low 70s are in store today with mostly clear skies. A weak front will arrive in the area tonight and bring increased cloud cover into Friday. No precipitation is expected, but the the temperatures will be a couple of degrees cooler, relative to today. That will be short lived as high pressure amplifies more dramatically over the weekend and into early next week. Widespread Minor HeatRisk will persist through Saturday.

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LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/

Sunday will feature the warmest day of the forecast period, with highs in the 80s for much of western Washington. Areas that will likely be in the upper 80s include the Cascade foothills and valleys as well as the southwest interior locations. Expect highs in the 70s along the coast. This corresponds to Moderate HeatRisk-which is prone to affecting those sensitive to the heat and who may be without adequate cooling. Additionally, though it will be warm outside, area bodies of water are not. Puget Sound is generally around 50 degrees with area lakes and rivers not much warmer. Please be cautious around colder water despite the air temperatures. Relative humidity also looks quite low across western Washington on Sunday. This poses an elevated risk of fire danger primarily among dry grasses or dead and dry vegetation.

Warm temperatures continue into Monday as high pressure moves overhead from the NE Pacific. Onshore flow returns on Tuesday, bringing the temperatures back down by several degrees.

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AVIATION

High pressure over the region will lead to dry and stable conditions across western WA today. Low level marine clouds may clip the coast early this morning with high clouds and VFR conditions in the interior. 33

KSEA...VFR today with N winds around 5 kt. 33

MARINE

Onshore flow continues with high pressure over the offshore waters and lower pressure inland. Expect stronger pushes through the Strait of Juan de Fuca today and Friday (during the afternoon and evening hours). The flow turns more N to NE over the weekend with 10-20 kt winds over Puget Sound and Hood Canal. Another westerly push through the strait is forecast Monday night as onshore flow returns. 33

HYDROLOGY

No river flooding is expected over the next 7 days.

SEW WATCHES/WARNINGS/ADVISORIES

WA...None. PZ...Small Craft Advisory from 5 PM this afternoon to 5 AM PDT Friday for Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca.