Occasionally tornadoes develop so rapidly that advance warning
is not possible. Remain alert for signs of an approaching
tornado such as a dark, often greenish sky, large hail, or a
loud roar similar to a freight train. Here are tornado safety
rules from the National Weather Service: -- The safest place to
be is an underground shelter, basement, or safe room. -- If no
underground shelter or safe room is available, a small,
windowless interior room or hallway on the lowest level of a
sturdy building is the safest alternative. -- Mobile homes are
not safe during tornadoes. Abandon mobile homes and go to the
nearest sturdy building or shelter immediately. -- If you are
caught outdoors, seek shelter in a basement, shelter or sturdy
building. If you cannot quickly walk to a shelter, immediately
get into a vehicle, buckle your seat belt and try to drive to
the closest sturdy shelter. -- If flying debris occurs while you
are driving, pull over and park. Now you have the following
options as a last resort: -- Stay in