Remember a year ago, when alleged CO2-induced Gulf of Mexico warming and Arctic sea ice melt were blamed for Mississippi flooding? Never mind

2011: Climate Change Blamed for Record Mississippi Floods

WASHINGTON, DC, May 20, 2011 (ENS) - Human-induced climate change is contributing to the recent heavy rain and ongoing record flooding along the Mississippi River, and we can expect more extreme weather events in the future, according to scientists and adaptation experts on a teleconference held by the Union of Concerned Scientists.

...The pattern of rains and drought is set up by the La Niña - cold tropical Pacific sea surface temperatures - which influences the jet stream and the movement of storms across the United States....

Additionally, a combination of natural factors and Arctic sea ice melt brought a relatively cold winter to much of the central United States, causing more precipitation to fall as snow, rather than rain, on the upper Midwest. Now that it is spring, that snow is melting and feeding into the Mississippi at the same time heavy rainfalls have occurred.

...In addition, human-induced climate changes continue to warm the Gulf of Mexico, the scientists observe.

Higher temperatures increase the amount of water that evaporates from the gulf's surface as well as the temperature of air that moves over the gulf, increasing the amount of water vapor it can hold.

2012:  Mississippi River at Record Low | WJTV

Dry temperatures and little rain are also to blame for the lowest levels on the Mississippi River in over 20-years...

Officials tell us it's 17-feet below average for this time of the year.