HUNTSVILLE, Ala. — An area of high-pressure to our west and a large upper-level ridge will be the driving forces in our weather pattern this weekend. The Northwest flow that results from those two elements will actually keep us somewhat comfortable on Saturday. It'll still be hot in the low 90s, but the humidity will take a step back for a short time.
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Sunday will bring an end to that peace. As the main trough begins to move east a cold front will march towards the Tennessee Valley. This cold front will act as a forcing mechanism bringing the chance for strong or severe thunderstorms to North Alabama.
The entire Tennessee Valley sits under a Marginal Risk for severe weather Sunday afternoon and Sunday evening. The biggest threat would likely be damaging winds and some very heavy rain.
Once we get past that we turn our attention to a potentially very hot week.
The aforementioned high sits over the Southwest. While it's there it is bringing dangerous heat to that region Excessive Heat Warnings are in effect for a good chunk of the Southwest. Heat Advisories cover Texas, Oklahoma, Louisiana, Arkansas, Mississippi, and parts of Alabama.
The high will take one of two paths. It will either move more east over Tennessee and Mississippi. If it does this it would drag a much warmer air mass south. Or, it will move more northeast over the Midwest. If it does this, then it would focus that extreme heat more north of the Tennessee Valley.