Magnitude-8+ Earthquake, 87km SW of Pijijiapan, Mexico
Really cool "green lightning" effect observed before and during the earthquake: <a href="https://mobile.twitter.com/AlanEchelon96/status/906031454529785856" rel="nofollow">https://mobile.twitter.com/AlanEchelon96/status/906031454529...</a> I believe this phenomenon is still not understood...