Miami faces high heat and thunderstorms, with temperatures up to 102 degrees and increasing rainfall chances midweek.

Forget about any worries of tropical weather today. Instead pay attention to the heat: temperatures in Jacksonville could feel as high as 113 degrees.

On Friday, 17 million people are under flood alerts across the Gulf Coast and in the mid-Atlantic, and 19 million are under heat alerts across the mid-Atlantic, southern Florida and Mississippi Valley.

Miami expects scattered showers and thunderstorms with brief dry periods and high temperatures nearing 90 degrees.

A hot and humid Saturday is ahead for South Florida with a Heat Advisory in place for Miami-Dade and Broward Counties from 10AM through 7PM for peak feels-like temperatures up to 103-107F.

The heat wave continues for the Miami Valley, forcing a Heat Advisory for the region. [DOWNLOAD: Free WHIO-TV News app for alerts as news breaks ] A Heat Advisory is in effect for the entire Miami ...

South Florida is shutting down the rain and turning up the thermostat. Sunny and hot conditions are expected on Friday with highs in the low-90s and feels-like numbers at 105 degrees and above. In response to this, a heat advisory has been issued for South Florida from 11 a.m. until 6 p.m., the National Weather Service said.