National Weather Service United States Department of Commerce

Extreme Heat Across the Southern U.S.; Flash Flooding Threats in the Mid-Atlantic, Northeast, and Four Corners Region

Dangerous and extreme heat will remain across portions of the southern U.S. this week. Heavy rainfall may bring significant flash flooding across portions of the Mid-Atlantic and Northeast through the night, and additional flash flooding concerns across New England on Wednesday. Monsoonal thunderstorms will bring a flash flood risk to the Four Corners region, especially in burn scar areas Read More >

Park Weather & Safety

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LightningCast

AI-predicted lightning probability for the next 60 minutes (GOES-R).

If You Can't Get to Shelter

You are NOT safe outside during a thunderstorm. These tips only slightly reduce risk:

  • Avoid open fields, hilltops, and ridge tops.
  • Stay away from tall, isolated trees and objects.
  • In a forest, move to a lower stand of trees.
  • If in a group, spread out.
  • Camp in valleys or ravines, not open areas.
  • A tent offers no protection from lightning.
  • Stay away from water, wet ropes, and metal objects.