Pennsylvania Extreme Heat

Stagnant air undermines progress torward clear air in Pittsburgh and Philadelphia.

Urban Heat Islands

Cities are almost always hotter than the surrounding rural area but global warming takes that heat and makes it worse.

Summers are getting muggier as the dewpoint temperature rises

Summers in most of the U.S. are already warmer than they were in the 1970s. And climate models tell us that summers are going to keep getting hotter as greenhouse gas emissions continue.

Philadelphia is the 17th fastest-warming city in the U.S.

Currently, Pennsylvania averages fewer than 5 dangerous heat days a year. By 2050, the state is projected to face more than 15 such days annually.

More than 310,000 people living in Pennsylvania are especially vulnerable to extreme heat.

As summers get hotter under the planet’s growing blanket of heat-trapping greenhouse gases, the worst of it will happen downtown rather than out of town. Climate Central’s new analysis of the Urban Heat Island effect in 60 of the largest continental U.S. cities makes it clear just how big the gap can be during the summer.

What's Happening with Extreme Heat?

Pennsylvania

U.S. Airports Face Increasing Threat From Rising Seas

The threat isn't that sea level rise will gradually breach the defenses surrounding each airport. Instead, at least during the next few decades, scientists say that sea level rise will be more of an enabler of storm-surge flooding, making it easier for even minor storms to produce more damaging surges and flooding... More

Georgia

What a Warmer Future Means for Southeastern Wildfires

Tinder-dry conditions that have resulted from months with little to no rain and toasty fall temperatures have allowed the fires to reach unusual heights. More

New York

Sandy’s Surge Was Extreme. It Could Become Normal

The risk posed by future storms like Sandy is only going to increase due to climate change. The potential for stronger storms and rising seas mean Sandy-level flooding could could occur once every 23 years as opposed to once every 400... More

Climate Change Behind Surge in Western Wildfires

Western firefighting veterans lamenting a “new normal” amid surging forest fires have received an explanation for the destructiveness they’ve been unable to quell... More

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