Aside from being the U.S. Independence Day holiday, the 4th of July is traditionally considered to be a key point in the development of spring-planted crops, especially corn. Normally, much of the Midwestern corn crop is headed toward its pollination stage later in the month, which ratchets up the importance of soil moisture, rainfall prospects and temperatures to ultimate yield potential. Crop analysts used to spend at least part of this holiday inside watching the Weather Channel on television. They can of course now watch weather radar maps and the latest forecasts on their smart phones while at the beach, a picnic, a ballgame or during the fireworks display. There is a potential weather story to be told on this year’s 4th of July...