Analysis of Twitter Users' Sharing of Official New York Storm Response Messages

The authors evaluated official New York City tweets related to Superstorm Sandy (2012) and winter storm Nemo (2013) and how often they were re-tweeted. They found that information was shared beyond existing follower bases; official tweets during Sandy had lower lexical diversity, with links to more information, and were retweeted more than unofficial Sandy tweets; and NEMO-related tweets containing more general information were retweeted more often than those containing actionable information.