Heat index values to exceed 105 degrees Sunday afternoon

The Weather Authority
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HUNTSVILLE, Ala. (WHNT)– The steamy summertime feel continues across the Valley on Sunday. Afternoon highs should easily reach the middle 90s, but the excessive humidity will make it feel even hotter.

Forecast guidance suggests feels like temperatures (heat index) will be hotter than 100 degrees for at least five hours Sunday, possibly peaking near 110 degrees around 3 p.m.

A heat advisory is typically issued when heat index values are forecast to exceed 105 degrees for any length of time.

Use extreme caution if you have to be outdoors for any period of time Sunday. Avoid any outdoor work if at all possible, especially between 10 a.m. and 5 p.m.

One saving grace is that a few neighborhoods will get a healthy thunderstorm, as was the case Saturday afternoon.

While the rain will not be widespread Sunday, any storm that forms will easily become strong in our extremely hot, humid environment. Expect very heavy rain, lightning, gusty wind and small hail in the strongest storms.

With a cool front approaching the area, we expect the showers and storms to become much more numerous on Monday afternoon.

Most of the Tennessee Valley remains under a severe drought, according to the U.S. Drought Monitor.

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