EDM Friday Briefing: 4.1 Earthquake Hits Delaware; Whooping Cough Outbreak December 1, 2017 Kimberly Arsenault 0659 Emergency and disaster management briefing for December 1, 2017: The Mid-Atlantic was rattled by a 4.1 magnitude earthquake on Thursday - and more news. Read more EDM Friday Briefing: Louvre Attack; New Superbug; Major Storm