What Makes Fog?

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By By Steve Pool

SEATTLE - There are two main types of fog, and the Northwest gets both varieties.

Ground fog usually begins on clear nights. As the temperature drops, the air cools to where it becomes totally saturated. The air condenses into water droplets, which we see as fog.

Advection fog is created from a warm air mass that moves over a colder area. This is common here in spring and summer. Over on the coast, warm air reacts with cooler air near the ocean water. It then cools and condenses, creating fog. It's a near-daily occurrence on the coast, but that fog can get carried into the Puget Sound region by the overnight marine winds, allowing our days start with fog or a low overcast.

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YouNews Salmon kill in Sequim Bay Salmon kill in Sequim Bay
Sorry to say there has been a fish kill in Sequim Bay, near Jimmycomelately stream. This is the stream I volunteer at, working with many others and WA. Fish and Game Dept. to bring back endangered Summer run Chum Salmon. There are many dead Chum along the bay shoreline.
YouNews Yikes! Yikes!