THE NEXT BIG THING: Afternoon storms will be more likely for the remainder of the week. The greatest chance for development will be after 2 p.m. and some storms may be severe. However, it’s still summer in Alabama, so we will have highs in the upper 80s and possibly low 90s before the storms start popping up.

The heat index is a measure of how hot it really feels on your body when relative humidity is factored in with the actual air temperature.

The top heat index in Washington on a sultry Tuesday appeared to be 103. The heat index, the “feels-like” temperature, exceeded 100 degrees again in Washington on Tuesday, in a sort of demonstration that history does repeat itself, while also authorizing use of the expression déjà vu.

Jacksonville, North, Northeast Florida: Dangerous heat today, with heat index of 108 to 115. Extreme heat warning and heat advisories issued.

An extreme heat warning and an extreme heat watch were issued by the National Weather Service in Jacksonville for July 28 and 29.

Brooke Hogan Addresses Rumors She & Dad Hulk ‘Fought' Before His Death: ‘I Felt a Disconnect' 119 JCPenney stores sold in nearly $1 billion deal. See list of locations. Powerful quake hits near Russia’s Kamchatka Peninsula. Japan issues a tsunami alert

Heat advisory issued for central North Carolina with index values up to 109°F; residents warned of heat illnesses.

A dangerous heat wave continues across a large part of the United States, with more than 130 million people under extreme heat watches and warnings from South Dakota to Florida.