John Antczak / AP

Technically we’re not in a heat wave, yet.  

National Weather Service officials in Pittsburgh said that’s because, in Moon Township where their office is located, the temperature has not hit 90 degrees for at least three days in a row.

It's really hot in most of the mainland United States right now. The National Weather Service predicts temperatures in the triple digits through the weekend in much of the South, Midwest and along the East Coast.

The culprit: a "heat dome."

It's a real meteorological event — the National Oceanic and Atmospheric Administration even took the time to define it in the agency's warning this week:

Since 2008, there have been nearly 10,000 automobile crashes with 96 fatalities statewide along Route 30.

The Pennsylvania State Police are partnering with municipal police departments to initiate a crackdown on aggressive driving along Route 30.

State police spokesman Adam Reed, said the Highway Enforcement of Aggressive Traffic initiative, or “HEAT on 30,” will span Pennsylvania’s Route 30.

It’s hot out — really hot — and several organizations in Pittsburgh are taking action to prevent fatalities as temperatures are expected to reach into the 90s this week.

Meals on Wheels workers have been advised to not only deliver the meals, but also to make sure the seniors they serve are holding up well in the heat.