NORMAN — The National Weather Service estimates that Monday's storms spawned more than a dozen tornadoes across Oklahoma in about six hours time. The weather service issued 31 tornado warnings and nine severe thunderstorm warnings, officials said this morning.
Mike Foster, meteorologist in charge of the weather service's Norman Forecast Office, said there were eight storms with 10 tracks, but those tracks probably had more than one tornado per track.
Crews will assess damage and update preliminary information on the deadly storms.
Foster said residents had considerable lead time for storm preparation, as the weather service began talking about significant weather outbreaks almost a week before the storms.