Preliminary Assessment of Climate Factors Contributing to the Extreme 2011 Tornadoes

Draft Assessment - Updated: 08-July-2011

Disclaimer: This draft is an evolving research assessment and not a final report. Comments are welcome. For further information, contact Dr. Martin Hoerling (
Overview | El Niño/La Niña | Climate Change | Q & A | References


  • 16-June-2011 - Added the Q & A page.
  • 08-July-2011 - Incorporated comments from the climate working group.