Saturday, November 19, 2011

Above Normal Temps for Thanksgiving!



Temperatures will climb into the upper 50s to near 60° for Thanksgiving Day. The Climate Prediction Center's (CPC) 6-10 day outlook has above normal temps not only for the Quad Cities, but for much of the middle of the United States (shown above). That's because the upper-level winds in the atmosphere will be flowing in such a way that the flow pattern will symbolize the greek letter omega. So this upper-level wind pattern is known as an Omega block (shown below).




That means there'll be a trough in the Eastern and Western U.S. with a ridge in the middle of the Country. When we are under the ridge our winds shift out of the South. Those southerly winds bring up warmer air from the South. So temps for Thanksgiving and Black Friday will be 10-15° above normal.

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