Today we’ll talk about the vernal equinox, the first day of astronomical spring in the Northern Hemisphere. Did you know that the sun rises exactly in the east today and sets precidely in the west? We’ll talk about this and other interesting fact about the first day of spring.
The Tug Aurora and her barge, the Aloha Spirit, at anchor off Astoria.
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At high tide the river off Astoria seems like a wide uninterrupted expanse of river. At low tide, mudflats abound. Today we’ll talk about the complexity of rivers and why they pose challenges for vessels.
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We’ve been seeing abrupt, short lived hail storms lately. So today we’ll take a look at what causes hail and other related solid precipitation.
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We recently saw a 63-foot wave off the mouth of the river in the ocean, recorded by a data buoy offshore. While this is a big wave for us, it’s also within the parameters of a set of wave parameters called “significant wave height.”
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We’ve got a bit of stormy weather coming in, and so a good time to answer a listener question about the Columbia River Bar and how sthip traffic is affected by weather.
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Today we have a Military Sealift Command cargo ship headed to Portland to the shipyard at Swan Island for repairs and maintenance. We’ll learn a little today about this interesting military vessel.
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