"Evan Fisher first fell in love with the changing colors of fall while looking at an old maple tree in the backyard of his childhood home in North Carolina. A decade later the meteorologist and geospatial analyst set out to use his professional skills to predict where he could find the most striking reds, oranges, yellows and purples each year."
"In 2023 the team launched Explore Fall, a public platform that is able to predict fall foliage progression across the continental U.S. Fisher and other experts agree that autumn foliage is arriving early this year. Yellow, orange and reddish leaves can already be seen in the Northeast, the Northwest and some central portions of the country. Peak colors are gradually spilling out from New England and the higher elevations of the Rockies into lower elevations and areas closer to the coast."
Evan Fisher applied meteorology and geospatial analysis to build a machine-learning model that forecasts where and when fall colors will appear using temperature, daylight hours and precipitation data. The Explore Fall platform, launched in 2023, predicts foliage progression and peak timing across the continental United States. Observations indicate autumn colors are arriving early, with yellow, orange and red leaves visible in the Northeast, Northwest and some central areas, and peak hues expanding from New England and high-elevation Rockies toward lower elevations and coasts. Seasonal forecasts expect strong 2025 displays in New England, Colorado Rockies, Plains and Midwest, while Appalachians and the Pacific Northwest may see duller color or early leaf drop. Leaf senescence and color dynamics are driven primarily by day length, temperature and rainfall, offering insight into tree and forest health amid climate change.
Read at www.scientificamerican.com
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