Over the last ten years, have there been any disasters in the countries Spain, Portugal,Barbados and Australia which could effect tourists from visiting these countries?
The Centre for Research on the Epidemiology of Disasters has a database listing all natural amnd technical disaters worldwide in the 20th century. They're in Belgium but lucky for you they have a website that you can visit to collate the info yourself:
http://www.cred.be/emdat/intro.html