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d. When lightning-detection devices or mobile phone apps are available, this technology could be used to assist in making a decision to suspend play if a lightning strike is noted to be within 10 miles of the event location.Any subsequent thunder or lightning* after the beginning of the 30-minute count will reset the clock and another 30-minute count should begin. Once play has been suspended, wait at least 30 minutes after the last thunder is heard or lightning is witnessed* prior to resuming play. Suspend play for thirty minutes and take shelter immediately. When thunder is heard or a cloud-to-ground lightning bolt is seen, the leading edge of the thunderstorm is close enough to strike your location with lightning. Develop criteria for suspension and resumption of play: An alternate safer place from the threat of lightning is a fully enclosed (not convertible or soft top) metal car or school bus. A designated safer place is a substantial building with plumbing and wiring where people live or work, such as a school, gymnasium or library. Develop an evacuation plan, including identification of appropriate nearby safe areas and determine the amount of time needed to get everyone to a designated safer area: Assign staff to monitor local weather conditions before and during practices and contests. The preferred sources from which to request such a policy for your facility would include your state high school activities association and the nearest office of the National Weather Service. These guidelines provide a default policy to those responsible or sharing duties for making decisions concerning the suspension and restarting of practices and contests based on the presence of lightning or thunder. Guidelines on Handling Practices and Contests During Lightning or Thunder Disturbances