On the ground with the storm chasers  Meteorologist to provide
first-hand look at storms  AUSTIN (KXAN) - The environment over
northern portions of south-central Texas will become very
conducive for a severe weather outbreak this afternoon and
evening, and I will be in the field Tuesday afternoon tracking
the thunderstorms along with experienced local storm chaser
Randy Denzer.  Meteorologists look at many variables to
determine the potential for severe thunderstorms and tornadoes.
Today, all of those variables are perfectly aligned in the most
favorable severe weather and tornado setup the area has seen in
at least a year.  Convective Available Potential Energy, or
CAPE, and Lifted Index, called LI, are measures of how powerful
thunderstorm updrafts will be, based mainly on the basic
principle that warm air rises. By Tuesday afternoon, CAPE values
are forecast to push above 5,000 J/Kg. That is a technical
measurement that shows the massive amount of energy these
thunderstorms will have  This is the highest n