A tropical wave moving across the Atlantic Ocean has no chance of further development as environmental conditions became more unfavorable, forecasters with the National Hurricane Center in Miami said Tuesday morning. Forecasters sent their final update on the disturbance at 1 a.m. Tuesday.

The tropical wave trying to form in the Atlantic is back up to a 20% chance of development as of Monday morning.

July has already been more humid than average, and now another, less obvious factor will enhance humidity this week: corn sweat. Like a person breathing, corn exhales water vapor through its leaves — a process called evapotranspiration — which exacerbates humidity in agricultural regions during the summer.

As Illinois braces for another summer heat wave, this week's conditions will be worsened by an unusual weather phenomenon: corn sweat.

The heat wave baking the central United States this week may feel worse than those earlier in the summer, and corn is partly to blame, forecasters say.