Dynamisches Periodensystem. Japan Quake and Tsunami Rattled Upper Atmosphere. Texas Thundercloud Caught on Video. - A passerby captured an unusually severe supercell storm forming in Texas. - The storm gave rise to at least one twister on May 21. An ominous cloud formation that developed in the Texas panhandle last week looks like a CGI effect straight out of a summer blockbuster. This tornadic thunderstorm, which formed near the town of Adrian during the evening of May 21 and gave rise to at least one twister, offered passersby with video cameras an exceptional view of nature's might.
NEWS: How Can a Tornado Send Semi Trucks Flying? Experts say the saucer-shaped cloud was the most severe type of thunderstorm: a supercell. "What you are seeing here is a well-developed rotating supercell thunderstorm, and the condensation pattern at cloud base forms a 'belt' or 'wall' appearance as air is lifted and sucked into the swirling storm," said Chris Walcek, a meteorologist at the Atmospheric Sciences Research Center at the State University of New York, Albany.