Superbolts Map (IMAGE) University of Washington Caption The dots represent superbolts, lightning with an energy of at least 1 million Joules. Red dots are particularly large superbolts, with an energy of more than 2 million Joules. Superbolts are most common in the northeast Atlantic and the Mediterranean Sea, with smaller concentrations in the Andes, off the coast of Japan, and near South Africa. Credit Holzworth et al./Journal of Geophysical Research: Atmospheres Usage Restrictions With credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.