they do signify unstable air within the storm. Unlike most clouds, which are formed by rising air, mammatus clouds are formed from sinking air inside the cloud. A scud cloud, or fractus cloud ...

Overall, it sounds a lot like what happened last week, a storm system that produced a couple of oddities ... and some of that is still on my car’s exterior. Mammatus clouds bubble over the Roanoke ...

Mammatus clouds fill the sky over Blacksburg’s Cassell Coliseum ... The back end of a severe-warned storm passes just west of New Castle on Sunday afternoon, March 16. Photo by Kevin Myatt. A dry air ...

KARE 11's John Zeigler says folks often mistake a shelf cloud for a wall cloud, but knowing the difference could save your life.

A pair of planetary scientists at the University of California, working with a colleague from the California Institute of ...

Ominous storm clouds loomed over a Chicago suburb on Sunday, March 30, as a tornado watch was in effect for the area. Footage captured by Matt Kluck shows storm clouds darkening the sky over Frankfort ...

Storm clouds rolled in over Pensacola, Florida, on Monday, March 31, just one day after parts of Florida experienced heavy rain and flooding. Footage from X user @SirDrewBrew shows dark clouds off the ...

CEDAR RAPIDS, Iowa (KCRG) - Our Tuesday starts calm with mixed sunshine and cooler temperatures, but clouds and winds will ... Risk area outlined by the Storm Prediction Center, which includes ...