Photo: Creative Commons: Climate Nexus, 2011
- In 2011, the United States experienced 14 extreme weather disasters that each resulted in more than $1 billion in damages, smashing the old record of nine set in 2008. Many of these disasters affected Oklahoma.
- 2011 was the hottest summer on record in Oklahoma.
- July 2011, according the Oklahoma Climatological Survey, was the "hottest month for any state on record, besting more than 67,000 other months."
- 20 people in Oklahoma died in 2011 from extreme heat.
- As of Feb. 21, 2012, more than 41 percent of the state of Oklahoma is under drought conditions classified as “severe,” “extreme” or “exceptional.”
- 2011 crop insurance payments to Oklahoma farmers for their agricultural losses total nearly $400 million.
- As of February 2012, every county in Oklahoma is under one or more weather-related disaster declarations.
- Since 2001, Oklahoma has had 31 federal major, weather-related disaster declarations.
- In 2011, there were 118 tornadoes, the second highest for the state since it began keeping records in 1950.
- Oklahoma City had the rainiest day in its history in 2011, when 8-11 inches hammered the city.
- In the billion-dollar Groundhog Day snowstorm of 2011, Tulsa set a record for the most snow ever recorded in 24 hours in that city.
- The warm season becomes longer and arrives earlier.
- The cool season warms and shortens, which leads to a longer frost-free period and growing season.
- Earlier maturation of winter wheat and orchard crops leave them more vulnerable to late freeze events.
- Increased year-round evaporation from the ground and transpiration from green vegetation.
- Drought frequency and severity increases, especially during summer.
- Drier and warmer conditions will increase the risk of wildfires.
- Rain-free periods will lengthen, but individual rainfall events will become more intense.
- More runoff and flash flooding will occur.
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