The 2012-2013 North American Drought, an expansion of the 2010–2012 Southern United States drought, originated in the midst of a record breaking heat wave. Low snowfall amounts in winter, coupled with the intense summer heat from La Nina, caused drought-like conditions to migrate northward from the southern United States, wreaking havoc on crops and water supply. The drought has inflicted, and is expected to continue to inflict, catastrophic economic ramifications for the affected states. It has exceeded, in most measures, the 1988-1989 North American drought, the most recent comparable drought, and is on track to exceed that drought as the costliest natural disaster in US history.
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