If you think it's been hot here the past couple of days, just head to the south where highs this afternoon are expected to reach the triple digit mark! Heat Advisories as well as Excessive Heat Warnings have been issued for almost all of the south from central Illinois down to the Florida Panhandle. A big ridge of high pressure sits along the gulf forcing the jetstream northward over the Great Lakes. This also sets up the 'ring of fire' effect. In order to get storms to form the air above us has to be cooler than the air at the surface; otherwise the air won't rise. The atmosphere underneath high pressure is usually capped (meaning it's just too warm to get storms going) but along the outer edge there's just enough instability to help storms develop and keep them going. This has pretty much been the pattern all summer long and until the ridge begins to break down, which looks to be about Thursday, we'll continue with our daily rain chances.
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