Guidelines for Game Officials and Game Management to Use Regarding Lightning
The following information was taken from the NCAA Sports Medicine Handbook
The purpose of these guidelines is to provide information to those
responsible for making decisions about suspending and restarting
games based on the presence of lightning.
1. National Severe Storms Laboratory (NSSL) staff strongly
recommend that all individuals should have left the game site and
reached a safe structure or location by the time the person
monitoring the weather obtains a flash-to-bang
(lightning-to-thunder) count of 30 seconds (equivalent to lightning
being six miles away). This recommendation
was developed as a practical way to make a judgment in situations
where other resources such as technology and instrumentation are
not available. In addition, a smaller, but still real, risk exists
with the presence of lightning at greater distances. Unfortunately,
current science cannot predict where within the radius the next
strike will occur.
2. The existence of blue sky and the absence of rain are not protection from lightning. Lightning can, and does, strike as far as 10 miles away from the rain shaft. It does not have to be raining for lightning to strike.
3. When considering resumption of a game, NSSL staff recommends that everyone ideally should wait at least 30 minutes after the last flash of lightning or sound of thunder before returning to the field of activity.
4. If available, electronic detection devices should be used as additional tools to determine the severity of the weather. However, such devices should not be used as the sole source when considering terminating play.
Information taken from the NCAA Sports Medicine Handbook and NCAA Championships Severe Weather Policy

