World Wide Lightning Location Network
About WWLLN The World Wide Lightning Location Network (WWLLN - pronounced 'woollen'), is a network of very low frequency (VLF) radio lightning sensors operated by the University of Washington in Seattle. Most ground-based observations in the 3 - 30 kHz VLF band are dominated by impulsive signals from lightning discharges called “sferics”. Significant radiated electromagnetic power exists from a few hertz to several hundred megahertz, with the bulk of the energy radiated at VLF. With our world w