Severe thunderstorms sweeping across the country are casting a shadow over Fourth of July celebrations, potentially jeopardising plans for millions of people.
With 60 million Americans under severe thunderstorm warnings as forecasters are predicting a series of weather disturbances that could disrupt festivities nationwide.
In Los Angeles, several July 4th firework shows have been canceled due to newly adopted environmental rules restricting the use of explosives above bodies of water.
