 Over 60 million Americans are under severe thunderstorm watches now through the evening from North Carolina to Maine amid record-breaking July 4th travel. Over 1,100 flights have been canceled this evening in the U.S., according to FlightAware, most due to storms. Barrel, the earliest Category 4 hurricane on record in the Atlantic, heading towards the Windward Islands before continuing through the Caribbean towards Jamaica and the Caymans, according to forecasters. This is ABC News.