textproduct: Seattle/Tacoma

SYNOPSIS

A ridge will bring one last day of dry and warm conditions this afternoon. Wetter and cooler weather arrives tonight into Saturday. Sunday will remain cool with showers in the mountains. Conditions look to dry up through the first half of the week with a weak front may reaching the area on Wednesday.

SHORT TERM /TONIGHT THROUGH SUNDAY NIGHT/

Patchy fog has dissipated early thus afternoon leaving mostly sunny skies across Western washington. High pressure continues over the area with afternoon temperatures in the upper 60s to lower 70s. Areas along the water will likely see high temperatures more in the low to mid 60s.

A ridge will shift eastward tonight into Saturday, allowing a trough and a front to move through the area. At this time, we're continuing to see the bulk of the rain falling late tonight into the early morning, affecting areas along the coast and the mountains. Post front, we'll see a convergence zone set up along the Snohomish/King county line for lingering showers. The high temperature will cool to temps in the upper 50s, to lower 60s.

Cooler but dry on Sunday with lingering showers in the Cascades, high temperatures will continue to remain in the upper 50s.

LONG TERM /MONDAY THROUGH FRIDAY/

Latest ensemble guidance shows an upper level low off the coast on Monday, barely clipping our area, resulting in mostly a dry day, with areas along the coast seeing a shower or two. This system will weaken into Tuesday as it rotates away from our area, leaving western WA in light and dry offshore flow. High temps stay in the upper 50s, with a weak front slated to enter the area Wednesday into Thursday for a chance of rain.

Mazurkiewicz

AVIATION

VFR cigs and visbys have returned to western Washington this afternoon. Surface winds are light and generally south to southwesterly at 7 kts or less. Expect these conditions to continue into this evening. The next weather system will arrive overnight into Saturday morning, bringing light rain to much of the region. Cigs are expected to go down to MVFR between 07-09Z for all terminals except KOLM where IFR cigs are more likely. Rain will generally ease after 17Z with VFR cigs for the remainder of the day.

KSEA...VFR cigs are to continue this afternoon and evening with southwesterly flow. The next weak frontal system will be arriving late tonight into tomorrow morning. The bulk of the rain will be done by 17Z, with isolated showers possible in the afternoon. Cigs tomorrow morning may become MVFR for brief periods of time, but the prevailing category will be VFR.

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MARINE

High pressure over the waters will weaken today. A frontal system will move through late tonight into Saturday morning. Seas will be between 8-10 feet tomorrow, more so in the offshore waters. High pressure building over the waters Saturday afternoon will remain through Sunday. Another system will move by west of the coastal waters Monday. High pressure will rebuild over the area Tuesday with seas subsiding back down to 4 to 6 feet by Tuesday.

Small craft advisory westerlies in the Central and Eastern Strait of Juan de Fuca Saturday.

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SEW WATCHES/WARNINGS/ADVISORIES

WA...None. PZ...Small Craft Advisory from 6 AM to 6 PM PDT Saturday for Central U.S. Waters Strait Of Juan De Fuca-East Entrance U.S. Waters Strait Of Juan De Fuca.