2011 outbreak

• 2011 Bulgaria foot-and-mouth disease outbreak
• 2011 Hackleburg–Phil Campbell tornado
• 2011 New England tornado outbreak
• 2011 Philadelphia, Mississippi tornado
• 2011 Smithville, Mississippi tornado
• 2011 Super Outbreak
• 2011 Tuscaloosa–Birmingham tornado
• 2011 United States listeriosis outbreak
• 2011 dengue outbreak in Pakistan
• April 2011 tornado outbreak (disambiguation)
• Derecho and tornado outbreak of April 4–5, 2011
• Tornado outbreak of April 14–16, 2011
• Tornado outbreak of April 9–11, 2011
• Tornado outbreak of June 18–22, 2011
• Tornado outbreak of November 14–16, 2011
• Tornado outbreak sequence of April 19–24, 2011
• Tornado outbreak sequence of May 21–26, 2011