Severe Thunderstorm Threat From the Central Plains to the Northeast; Extreme HeatRisk for the East Coast

Strong to severe thunderstorms are possible from the central Plains to the Northeast through this evening. Widespread damaging winds are the primary threat but hail and a tornado or two is also possible. Extremely dangerous heat continues across the Eastern U.S. Warm overnight low temperatures will provide little to no relief. Read More >

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Notice: Wave height forecasts represent the average of the highest one-third (33%) of waves (measured from trough to crest) that occur in a given period. Since the Significant Wave Height is an average of the largest waves, mariners should be aware that many individual waves will probably be higher.

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