Lightning lockdown (IMAGE) American Geophysical Union Caption Lightning reduction during COVID-19 period was detected by the World Wide Lightning Location Network (WWLLN). The months March through May are bracketed with colored lines for the years 2018, 2019 and 2020. Credit Yakun Liu Usage Restrictions Please give credit to the author. License Original 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.