In 2010, there was an even larger drought with potentially worse damage — two «once a century» droughts just five years apart. (green.blogs.nytimes.com)
«No overall or slight decrease in dryness since 1950; large variability; large drought of the 1930s dominate.» (dotearth.blogs.nytimes.com)
-- «The 2012 report on extreme events by the Intergovernmental Panel on Climate Change examined the evidence for regional changes in soil moisture since 1950, and made the following assessment for western North America: «No overall or slight decrease in dryness since 1950; large variability; large drought of the 1930s dominates.» (climatedepot.com)