As a stalled high-pressure system and shifting jet stream fuel extreme heat for millions, UVA professor Robert Davis explains what’s typical – and what’s not.

A deadly heat wave grips the Midwest and Northeast with record-breaking temperatures, overwhelming power grids and prompting ...

As York City firefighter Nathan Raine put it, "Fires don’t really care about weather. They start when they start." ...

Scorching hot temperatures change the routines for Orioles players, umpires and fans. Here’s how they handle the extreme ...

Both alerts mean it’s dangerously hot. Both are signals to take immediate action to protect yourself from heat-related illnesses like heat exhaustion and heat stroke. Criteria can be lowered if it's ...

The National Weather Service has issued a HEAT ADVISORY for parts of the Susquehanna Valley for Thursday, June 26 from 9 AM - ...

A new report shows a sharp increase in peak electricity demand, leading to blackout concerns in multiple states. Here's how ...

A Severe Thunderstorm Warning has been issued for a portion of Western Pennsylvania Wednesday. The National Weather Service ...

A dangerous heat wave continues gripping Hampton Roads Wednesday, with temps in the 90s and heat indices up to 108 degrees.

Buckled roads. Broken bridges. Delayed trains. Strained power grids that led to dangerous outages. Cases of heat illness and canceled sporting events. These were just a few of the effects from this ...

The Lehigh Valley and nearby counties remain under an extreme heat warning through 8 p.m. Wednesday. Outdoor activities are ...

More than 125 million Americans are under the highest level of extreme heat alerts during a wave of above-average ...