Nick Fetty | June 21, 2016
About 14 percent of Iowa experienced abnormal dryness during the early part of June and since then that percentage has nearly doubled.
Data from the Drought Mitigation Center show that Iowa’s southeast corner is the driest region in the state. This region includes much of the area south of Interstate 80 and east of Interstate 35.
Drought intensity is measured on a five-point scale from “abnormally dry” to “moderate drought” to “severe drought” to “extreme drought” and finally “exceptional drought.” The Hawkeye State has not experienced severe or extreme drought since 2012.
Dr. Deborah Bathke, a climatologist with the Lincoln, Nebraska-based Drought Mitigation Center, warmed that if the current weather conditions continue it may lead to a “flash drought.”
“If we continue to see these high temperatures and lack of precipitation, I can see us quickly evolving into what we like to call a ‘flash drought,’ which is when we have this rapid onset of high temperatures combined with a lack of precipitation that really starts to desiccate our soils and stunt our crop growth,” Dr. Bathke told Radio Iowa.
Soil conditions have also varied across Iowa with most of the northern third of the state experiencing “adequate to surplus” levels of moisture in topsoil compared to southeast Iowa where over 60 percent of topsoil moisture levels were rated “short to very short,” according to the most recent Iowa Crop Progress & Condition report by the U.S. Department of Agriculture.
Despite the hot and dry conditions in southeast Iowa, the USDA report found that statewide just 4 percent of Iowa’s corn land is classified as “poor” or “very poor” while 3 percent of soybean land falls into those same categories.