Useful websites are categorized for your use.
Natural Hazards Information
http://earthobservatory.nasa.gov/NaturalHazards http://www.ngdc.noaa.gov/seg/hazard/hazards.shtm http://www.usgs.gov/hazards/ http://www.emdat.be http://www.fema.gov/hazard/index.shtm
Earthquake Information
http://www.eeri.org http://mceer.buffalo.edu http://www.eerc.berkeley.edu http://www.eri.u-tokyo.ac.jp http://earthquake.usgs.gov http://tsunami.geo.ed.ac.uk/local-bin/quakes/mapscript/home.pl http://www.wsspc.org
Flood Information
http://www.fema.gov/business/nfip http://www.floodsafety.noaa.gov http://www.usace.army.mil http://www.dfm.water.ca.gov
Hurricane Information
http://www.nhc.noaa.gov http://www.spc.noaa.gov/climo/reports/021111_rpts.html http://www.sbafla.com/fhcf http://www.ohsep.louisiana.gov