On a day where thunderstorms are predicted, Officials will access live weather observations, such as on-line weather radars or radio weather warnings, to anticipate the arrival of thunderstorms at the venue.

If a thunderstorm is imminent, Officials should inform all captains and officials on site that there is a possibility of play being suspended and to reiterate the WFDF rules regarding risk identification and response. Captains and officials should also inform players and other persons on the field of the correct risk identification and response procedures if possible.

If lightning is observed or thunder is heard, a WFDF Official will count the time between the lightning (flash) and the thunder (bang). If the time delay is less than thirty (30) seconds then the strike was closer than ten (10) kilometres and the playing area will be cleared immediately.

If lightning technology is present at the venue then B4.2.1.3 does not apply and WFDF Officials may act based on the advice of the venue officials.

If anyone observes hair standing on end, hears crackling or hears static on electronic devices, a lightning strike may be imminent, and all people in the vicinity should be alerted.