IEM Daily Feature
Wednesday, 17 June 2020

Water Demand

Posted: 17 Jun 2020 04:29 AM

Our current stretch of June weather has featured warm temperatures, plenty of sunshine, low humidity, and breezy conditions. The drying effect of this combination is very noticeable as un- watered lawns are starting to brown and corn leaves are rolling in some areas. One way to quantify the transfer of water from the soil to the air is via an equation called potential evapotranspiration (PET). The featured map displays calculated PET values from the ISU Soil Moisture Network assuming an alfalfa crop coefficient. The map shows the potential for 0.3 to 0.5 inches of water to have been moved from the soil to the atmosphere yesterday. These values are at the top end of the range of what is expected in Iowa.

Good = 14
Bad = 0