News on cyclone felleng

Tropical Cyclone Felleng, currently spiraling off the east coast of the island of Madagascar, was caught in a NASA satellite image exhibiting "overshooting cloud tops," a clear sign that it is packing powerful storms.
A NASA statement describes an overshooting cloud top as a domelike protrusion that balloons out from the anvil head of thunderstorm cloud and shoots up into the stratosphere, the layer of the atmosphere above the troposphere. The troposphere is where most weather on Earth occurs.
The overshooting top is indicative of powerful storms because it takes a lot of energy to push through the tropopause, the boundary between the troposphere and stratosphere and where the temperature of the atmosphere goes from decreasing with height to increasing with height. Normally, the vertical growth of clouds stops at the tropopause, the NASA statement says, with the clouds then spreading out horizontally, forming the characteristic anvil shape of most strong thunderstorms.