Weather conditions are considered favorable for creating a tornado or other dangerous severe weather – for example, during a severe thunderstorm. If a tornado or a severe weather watch is issued, listen to the radio and keep an eye on the weather. Plan to take shelter if necessary.
A tornado funnel or a dangerous severe weather storm has been sighted or identified by radar.Take shelter immediately. Remember that tornadoes or dangerous straight line winds can move quickly; therefore, there may not be adequate time to issue a warning. If severe thunderstorms occur, be alert to the fact that a thunderstorm could trigger a tornado, and be prepared.