Pennsylvania Coastal Flooding

Atlantic hurricane season is seeing more major storms

Today, Pennsylvania has 7,000 people at risk of coastal flooding. By 2050, an additional 6,000 people are projected to be at risk due to sea level rise.

Sea level threats down to zip code

Type a coastal place name in Pennsylvania and find local projections, maps and potential impacts on people, infrastructure, and much more with our interactive tool.

Pennsylvania has the smallest proportion of its total area currently in the 100-year coastal floodplain. By 2050, the area is projected to double from 10 to more than 20 square miles.

Marcus Hook, PA and sea level rise

Philadelphia is suceptable to sea level rise.

What's Happening with Coastal Flooding?


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


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

Sign up for email updates to stay informed about what your state is doing to mitigate weather risks.