Burlington, VT – Outdoor enthusiasts heading into the mountains of northern Vermont today may face unusually confusing and potentially hazardous conditions as a strong temperature inversion develops across higher elevations.
According to the National Weather Service Burlington, a pronounced inversion is setting up near 3,200 feet, causing temperatures at higher elevations to be significantly warmer than conditions below. As of 1:54 p.m. Wednesday, forecasters reported temperatures at the Whiteface Mountain summit near 21 degrees, while lower elevations remain closer to the freezing mark.
Meteorologists say this setup means hikers and backcountry travelers may encounter icy, near-freezing conditions at trailheads, only to experience warmer, softer snow and melting conditions near summits. Weak winds are limiting atmospheric mixing, allowing the inversion to persist through the afternoon and into the evening hours.
Weather service graphics show a sharp contrast between elevations, with some mountain summits running 15 degrees warmer than valley locations. Officials warn this can increase the risk of slippery refreeze conditions, rapidly changing trail surfaces, and misleading gear decisions.
The advisory affects the Green Mountains, as well as elevated terrain across northern New York and northern Vermont, including areas near Chittenden, Lamoille, Washington, and Franklin counties, and within driving distance of the Burlington metro area.
The National Weather Service urges anyone hiking, skiing, or traveling at elevation to check summit forecasts, carry traction devices, and plan for changing conditions on both ascent and descent.
Conditions are expected to gradually normalize once stronger winds return later this week.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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