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Originally posted by Donnie Darko
It has to do with the rotation of the Earth. The West Coast is moderated in temperature by the ocean, because the oceanic influence flows from west to east (like the Earth's rotation).
The East Coast has a continental climate, because the oceanic influence does not flow there.
Thus, winter on the West Coast is very mild (indeed, a winter in Portland, Oregon is about as mild as a winter in Birmingham, Alabama, and even a Seattle winter is at least as mild as a DC winter), while the East Coast freezes their behinds off in their Midwestern continental climate.
At the same time, the East Coast gets a hot, muggy summer, while the West Coast gets a more moderated dry summer (though it can still also be really hot).
El Nino is happening right now, and that makes temperatures in western North America especially high.
thanks for that. i always wanted to know
[edit on 3-8-2009 by Donnie Darko]