qMCCs account
for the greatest amount
of severe weather in the U.S. and Canada.
qCircular
clusters of thunderstorms which are self propagating in that individual cells create downdrafts which interact to form new cells.
qColder,
denser downdrafts spread across the surface and help force warm, moist surface air aloft.
qThis outflow boundary initiates a new cell.
qThe entire
system typically propagates
eastward.
q