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Tornado outbreak of April 19–22, 2011

Tornado outbreak in April, 2011

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Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 29, 2026
Entity authorityQ4781903 ↗
Source-derived summary

A major tornado outbreak affected the Midwestern and Southern United States from April 19–22, 2011, with 110 tornadoes being spawned across six days. From April 19–22, a storm system moved through from the Great Plains to the eastern U.S.. Thunderstorms began in the late afternoon and early evening with large hail and several tornadoes. Significant damage was reported near Bowling Green, Missouri and Girard, Illinois as a result of tornadoes, the latter of which was rated EF3. Another large tornado was reported near Octavia, Oklahoma before the supercells merged into a very large squall line. Overnight, the squall line tracked eastward with widespread wind damage and many embedded tornadoes across several states, a few as strong as EF2, but most were brief and weak. In the early hours of April 20, 2011, a tornado tore through a neighborhood in Oregon, Ohio, leaving some significant damage but no injuries. Also, three tornadoes struck New Albany, Indiana, and Jeffersonville, Indiana. Both are cities just north of Louisville, Kentucky.

Severe weather once again developed across parts of the Midwest on April 22.

Editorial summary

This brief starts where responsible research should: with the source description of “Tornado outbreak of April 19–22, 2011” as tornado outbreak in April, 2011. Everything that follows is an evidence route, not borrowed authority.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—2011—that can be checked directly. The selected authority fields contribute no independent date. The account is most persuasive where Tornado, outbreak and April can be independently traced.
Editorial analysis

Why this record matters

The subject matters to the general reference register because the source frames it as tornado outbreak in April, 2011. Its deeper value depends on whether names, dates, institutions and citations support that framing.

Evidence profile

Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 29, 2026. The linked authority identifier is Q4781903. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2011.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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Three-step research path

  1. Establish the record: confirm the title “Tornado outbreak of April 19–22, 2011”, its source revision and the description used here.
  2. Expand the search: follow Tornado outbreak of April 19–22, 2011 primary sources, Tornado outbreak of April 19–22, 2011 archive and Tornado research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

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Source & attribution

This entry incorporates text from “Tornado outbreak of April 19–22, 2011” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.