Marine Weather and Tide Forecast for Bryn Mawr-Skyway, WA

FXUS66 KSEW 230412 AFDSEW

Area Forecast Discussion National Weather Service Seattle WA 912 PM PDT Tue Apr 22 2025

SHORT TERM /TONIGHT THROUGH THURSDAY/
Current satellite imagery shows fair weather cumulus shrinking over the Olympics and Cascades, otherwise, clear skies over W WA this evening. A quick look at dewpoints across the area shows the potential for another round of overnight lows dipping into the 30s for most locations.

Inherited forecast is on track with no need for any evening updates.
For additional forecast details, please refer to the Previous Discussion section below.

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From Previous Discussion...Dry and mostly sunny conditions dominate across western WA this afternoon as a ridge of high pressure noses into the region. Another cool night is expected overnight with areas of isolated fog and frost possible again. That said, temperatures are expected to be slightly higher, limiting the frost extent even more than this morning.

The ridge will shift east across the region Wednesday and Thursday allowing for a significant warm up. By Thursday, afternoon highs will reach into the low to mid 70s across the region.

LONG TERM /FRIDAY THROUGH TUESDAY/
From Previous Discussion...By Friday, a trough off the coast will elongate and cluster analysis now slightly favors a cutoff low bringing the bulk of the energy south of the region Friday through Sunday and leaving western WA warmer and somewhat drier. Still there is a ~40% chance that the trough holds together and brings more of the energy our way leading to a wetter and cooler solution.

There remains a signal in ensemble guidance for weak and potentially transient ridging in the Monday/Tuesday timeframe next week. All in all, little impact is expected at this time.
-Wolcott-
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