Red sprites, gigantic jets, elves: Captivating upper-atmosphere lightning

red sprites blue gigantic jets elves upper atmosphere lightning himalaya stephane vetter

If ordinary lightning seems pretty ordinary, upper-atmosphere lightning is something else – an entire zoo of various upper-atmosphere electrical discharges. Red sprites, gigantic and blue … Read more

Understanding severe thunderstorms: criteria and impact

severe thunderstorms how bad it is

During storm season, there is increasing talk about severe thunderstorms. What does “severe” in severe thunderstorms mean? When does a thunderstorm become severe? What criteria … Read more