Thunderstorm Safety Sign: “When Thunder Roars, Go Indoors!” #289047 (License: Personal Use)

The high-contrast black-and-yellow sign features bold text stating “When Thunder Roars, Go Indoors!” alongside a vivid lightning bolt striking a cloud. It instructs users to stop all activities, seek shelter in substantial buildings or hard-topped vehicles, and wait 30 minutes after the last thunder before resuming outdoor plans. Logos for NOAA and the National Weather Service reinforce its authoritative source.

Used in public spaces like parks, schools, sports fields, and community centers to promote lightning safety; matches user intent for emergency preparedness, weather safety education, or institutional compliance.