Communicating the Threat: WFO Norman's Information Services Preceding the May 20, 2013 Moore Tornado (Invited Presentation)

Residents of Moore, Oklahoma had about 36 minutes warning of the deadly EF5 tornado on 20 May 2013. But in reality, weather information concerning the tornado threat had been flowing from the National Weather Service and other sources for many hours and days preceding the event. This review will examine the stream of weather information from the NWS Norman Weather Forecast Office (WFO) in the days, hours and minutes leading up to the tornado.