Heat, humidity keeps hold on Eastern US as weekend slogs on
(World News USA)

NEW YORK (AP) ` A heat wave will continue to keep much of the Eastern United States in its grip Sunday, while a cold front that could lower temperatures in the middle of the country may be accompanied by thunderstorms that threaten flash floods.The National Weather Service says the `oppressive and dangerous` heat wave will abate by Monday and Tuesday. The agency says a swath of the East Coast, from the Carolinas up to Maine, faces the greatest heat threat Sunday. Daytime highs are ......