Science question about underground survival.

[Catlady (Rita Prince Winston)]

Tonks_op wrote in
<http://groups.yahoo.com/group/HPFGU-OTChatter/message/37224>:

<< Personally I don't want to go into a basement unless I have some
other people with me. If I am going to die, I want to be with friends.
And I do NOT want to be in some government community shelter!! We all
saw what a nightmare that was with Katrina. >>

A basement is the LAST place you want to be during Katrina.