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> Why does La Nina cause a SE ridge?, Trying to explain this to my friends
HSinVA
post Sep 16 2010, 05:06 PM
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I am no meteorologist by any stretch, so maybe someone can help me. Whenever people start talking about the weather here in the SE I frequently bring up the La Nina topic. I explain to them that La Ninas typically cause the SE periods of excessive warmth and dryness driven by higher pressure ...but I can never explain why.

What happens in the Pacific that causes weather patterns to change forcing the ridging to occur in the southern US?

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stormguy80
post Nov 15 2010, 10:04 PM
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QUOTE(HSinVA @ Sep 16 2010, 06:06 PM) *
I am no meteorologist by any stretch, so maybe someone can help me. Whenever people start talking about the weather here in the SE I frequently bring up the La Nina topic. I explain to them that La Ninas typically cause the SE periods of excessive warmth and dryness driven by higher pressure ...but I can never explain why.

What happens in the Pacific that causes weather patterns to change forcing the ridging to occur in the southern US?


The colder Pacific means that the mean trough and associated cold air that is usually over the east is able to set up farther west. This causes the western Atlantic ridge to also set up farther west over the SE US.
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