You are browsing the archive for 26 April 2011 - Dan's Wild Wild Science Journal.
26 April 2011
Storm Prediction Center Issues Rare “High Risk” of Severe Storms
There are two main ingredients for severe thunderstorms, wind shear and instability. These long lasting thunderstorms called supercells produce almost all of the severe weather that hits the plains and Southeast USA in the spring. If you have large hail or see a tornado, then you are in a supercell. Meteorologist combine instability and shear into an number called the supercell index. Anything above 5 is significant, and over 10 …