Can UFOs be the timer travelers from future!!!?

Answer 1

Since we know very little about UFO's or who's flying them I suppose anything is possible.

A theory exists that the "visitors" could be humans from the future that have evolved with time on another planet, and have come back to the past to warn us of catastrophic events.

Here's some links to news stories about mass sightings before the tsunami:

http://www.indiadaily.com/editorial/12-31h-04.asp
http://www.cosmicparadigm.com/ufonews/2005_01_02_archive.html

This one is really stretching it, but talks about a formation seen before Katrina:

http://www.cropcircleanswers.com/Prophetic_Signs.htm

Answer 2

You mean that the UFO's came from the future to us to our time?

Yes why not ?

did "they" already have a seen a UFO ?