During the winter the temperature contrast between warm and cold is greater; therefore, creating Pacific storms. When the land cools from a long summer the temperature contrast between the ocean and land becomes great, and develops a low pressure called the Aleutian low. This low sits over the Gulf of Alaska all winter long and weakens by the summer. This low pressure is what creates the storms we see that slams into the west coast all winter long. In the summer, high pressure called the Pacific high builds over the central Pacific, compressing air making storms impossible get through, so this is why we don’t have rain in the summer. The mountains over the in heats up called the Rockies heat up during the summer and that warm air is distributed over to California. And, that warm air is very dry because it’s been compressed by downsloping winds in the mountains. When the air is in place over cool Pacific Ocean waters, it develops what is called an inversion. This makes the low atmosphere very stable. Cold water currents met with this stable air creates the fog along the California coast we see every year, especially in San Francisco during the summer.
2007-05-14 12:30:08
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answer #1
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answered by Invisble 4
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This all has to do with the positioning of high and low pressure areas, this all has to do with surface ocean temperatures and would be very complicated to explain here. In the summer the eastern Pacific Ocean is covered by a very stable high pressure area. This deflects all storm systems to the north and through Canada and Alaska. As winter approaches this high moves south towards the equator and allows storms coming out of the north Pacific to travel much lower down the Pacific coast. Trying to keep the answer simple, maybe too simple?
2007-05-14 12:30:34
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answer #2
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answered by DaveSFV 7
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Look at the geography. On the west side is an ocean with fairly cool water. On the east side is alot of mountains. Because of these mountains, land further east is very dry. In the winter, the wind blows in from the ocean. In the summer, the wind blows from the other way. Figure it out.
2007-05-14 12:17:30
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answer #3
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answered by cattbarf 7
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It doesn't. I live in Seattle, and we (usually) have wet MILD winters, and wet MILD summers...
Some times if you go far enough over "east" you get the rainshadow... that means it will down pour over here (west of the Cascades) and be bone dry (east of the Cascades).
2007-05-14 17:51:17
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answer #4
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answered by *Kylie. 2
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The gulf current.The currents in the ocean set the stage, by the water coolong and heating,it insulates,pulls and pushes... and so forth.
2007-05-14 12:17:21
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answer #5
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answered by Linda 1
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With a pal...we've plans for day after today so i assume it truly is why to me it truly is no longer an excellent deal that Yahoo! solutions chosen to do maintenance day after today at that particular time. ^_^
2016-12-17 12:41:59
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answer #6
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answered by ? 4
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we have a marine climate and the shadow effect when it comes to mountains
2007-05-14 12:20:17
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answer #7
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answered by undercovernudist 6
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follow the rules, you'll be enlightened:
http://kingfish.coastal.edu/biology/sgilman/770Oceanatmosphere.htm
2007-05-14 12:18:26
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answer #8
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answered by RexRomanus 5
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