NORFOLK, Va. — This year marks America’s 250th birthday, and we’re taking a closer look at how weather helped shape the nation we live in today. We’ll explore moments when storms, heat, cold, and even ...

Tropical Storm Isaac strengthened as it dumped heavy rains on Haiti on Saturday, threatening floods and mudslides, NBC News reported. Lashing rains and high winds were reported along parts of Haiti's ...

Tropical storm Isaac is now officially a hurricane, still disrupting proceedings here in Tampa and haunting Republicans with memories of the past. Rosalind Helderman reports for the Washington Post.