The 2010–2013 Southern United States and Mexico drought was a severe to extreme drought that plagued the Southern United States, including parts of Texas, Louisiana, Arkansas, Mississippi, Alabama, Georgia, South Carolina, North Carolina, Florida, and Oklahoma; the Southwestern States, including Kansas, Colorado, New Mexico, and Arizona; as well as large parts of Mexico, in a three-year pattern from 2010 to 2013. The worst effects were in Texas, which experienced the brunt of the drought and its driest August–July (12-month) period on record from 2010 to 2011. The dry spell in May 2011 was also said to be the worst period of drought in Texas since 1895. The U.S. Drought Monitor reported that Lubbock, Texas has experienced the nation's worst average level of drought since the beginning of 2011. McAllen, Harlingen, Brownsville and Corpus Christi also ranked among the nine U.S. cities most affected by extreme drought. The drought in Texas caused an estimated $7.62 billion in crop and livestock losses, surpassing the previous record loss of $4.1 billion set in 2006. History The drought began due to a strong La Niña developing by the summer of 2010 which brings below average rainfall to the southern United States. The effects of the La Niña could be noticed immediately as much of the south receives important rainfall during the summer, and this was the driest summer for Texas and Georgia in the 21st century thus far, and much of the south received record low rainfall. Throughout 2011, the drought was confined to the Deep South as the mid-south received flooding due to severe weather and tornadoes. However, the drought continued and intensified in the Deep South as Texas saw 2011 become its second-driest year on record, Oklahoma saw its fourth-driest, and Georgia saw its seventh-driest year on record. The winter of 2011–12 was one of the driest winters on record for the eastern and central United States. In the spring of 2012, the drought made a massive expansion from the Deep South to the Midwest, Mid-south, Great Plains, and Ohio valley. At its peak in August 2012 the drought covered approximately 81% of the United States. Throughout the winter of 2012–13, heavy rain and snow brought relief to the drought in the southern and eastern United States, even causing severe flooding. By March 2013, the eastern United States was drought-free, effectively ending the 2010–13 southern U.S. drought. Drought continued on the Great