East Tennessee State University Experts Report Cooler Nights and Rain Improve Fall Color Prospects in Southern Appalachians
After an unusually warm September, the Southern Appalachians are finally experiencing cooler nights and increased rainfall, which East Tennessee State University (ETSU) experts say are crucial for the region's fall foliage. Travis Watson, ETSU's campus arborist, noted that recent widespread rain has helped replenish groundwater and keep leaves on trees, following a period of hot, dry weather. Dr. Andrew Joyner, Tennessee’s state climatologist and an ETSU professor, confirmed that temperatures are moving closer to seasonal norms, with cooler nighttime temperatures in the 40s and 50s expected. This shift in weather conditions is a welcome change for the development of vibrant fall colors, as prolonged warmth had previously slowed color progression, making the season run approximately a week behind schedule. While some trees are already changing color, Watson cautioned that not all early coloration is seasonal, as drought-stressed trees can also exhibit premature browning and leaf drop.