National Weather Service United States Department of Commerce

Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. 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.