Meteorologists warned that the oppressive heat wave is part of a larger system impacting much of the Southeast and Midwest.

All of Florida will be under heat advisories Monday, July 21, as a heat dome spreads from the Ohio and Mississippi valleys. Here's what to know.

ORLANDO, Fla. – A dangerous and potentially record-breaking heat wave is building across Florida this weekend. A strong dome of high pressure is locking into place, cutting off rain chances and sending temperatures soaring.

A heat advisory for Florida's Treasure Coast is in effect from noon through 6 p.m., with heat index values from 109 to 112 possible.

Temperatures could feel as high as 115F in some places bringing a very real fear of heat related deaths and major disruption to peoples' lives, especially those with out cooling systems

As temperatures soar, experts offer personalized advice for staying healthy and hydrated. With large swaths of the country sizzling due to oppressive heat, many Americans are feeling parched. But just how much water will keep them properly hydrated and healthy?