Remember last November, when Iowa's drought was allegedly a "teachable moment" about how CO2 causes droughts? Iowa just had its wettest spring ever

Nov. 2012:  Iowa scientists: Drought a sign of climate change

DES MOINES, Iowa (AP) -- This year's drought is consistent with predictions that global climate change would bring about weather extremes including more frequent droughts, said a report released Monday.
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"The drought is sort of a teachable moment," said Jerry Schnoor, co-director of the Center for Global and Regional Environmental Research at the University of Iowa.

Wettest Iowa spring ever, climatologist says | Des Moines Register Staff Blogs

This year has been the wettest spring in 141 years of weather record keeping, according to state of Iowa climatologist Harry Hillaker.
The Hawkeye State has been drenched with 16.65 inches of precipitation through Tuesday. That breaks the statewide record of 15.36 inches set in 1892.
Forecasters measure spring as March, April and May to create uniformity in record keeping. Traditionally spring begins with the spring equinox, which fell on March 20 this year, and ends with the summer solstice set for June 21.