We awoke this morning to another warm, sunny day with a gentle southerly breeze. By mid day, the south wind had intensified and clouds moved in from the west, indicating the approach of a cold front. Since little moisture had moved in ahead of the front, only a few scattered showers developed in our region and, as the winds shifted to a westerly heading, I knew that the front had passed through Columbia. As expected, the air cooled, the clouds began to disperse and, by evening, a crescent moon hung in the clear, southwestern sky.