Cedar League

TL;DR: The use of an agreed-upon hashtag and the number of users following an official account positively influence message retransmission, as does message content describing hazard impacts or emphasizing cohesion among users, which suggests some measures commonly taken to convey additional information to the public may come at a cost in terms of message amplification.

TL;DR: This study provides the first examination of terse message retransmission of official warning messages in response to a domestic terrorist attack, the Boston Marathon Bombing in 2013, using messages posted from public officials’ Twitter accounts and employs a negative binomial model to examine how message characteristics affect messageretransmission.

TL;DR: Examining terse health-related warning messages sent by public safety agencies over Twitter during the 2013 Boulder, CO, floods demonstrates that even terse messages delivered via Twitter ought to provide information about the hazard event, its impact, and actionable instructions for self-protection.

TL;DR: While EMs use a variety of weather and radar products to acquire information, weather observing spotters are key sources of verification data and with respect to warning the public about tornado threats, sirens are the primary method.

TL;DR: An operational concept, requirements, design, and implementation of a forecaster, communicator and emergency computer system and work flow that support the study of forecaster-emergency interactions is described.