Climate Compass on MSN

Why some storms turn into tornadoes

The Supercell Foundation Not all thunderstorms can produce tornadoes - only about 30% of supercell thunderstorms actually ...
From hundreds of miles above Earth, the scars left by a deadly supercell over Mississippi resolve into two unnervingly straight lines, etched side by side across the landscape. Those twin tracks, ...
UPDATE (8:20 a.m. 5/25/11)The death toll has risen to 13 across the region with eight people killed in Oklahoma, two in Kansas and three in Arkansas, reports the Associated Press. Rescue crews worked ...