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Fall

The Forca d'Acero Forest Changes Color

Where does the color change first?

From September 15 to November 15, day by day. Drag the slider or click Start.

Images © Esri, Maxar, Earthstar Geographics

GreenVote Count

The color covers only forested areas. The average trend is based on the four survey points; differences between trees and species are simulated, not measured. Below 1,300 m, the data is less reliable. Median for 2001–2025 (MODIS satellite data), not this year’s forecast.

When to climb, and to what altitude

GreenVote Count

Vegetation cover has already changed; median 2001–2025 (NASA MODIS NDVI, 250 m). An actual season may occur a week or more earlier or later.

Week

Key Dates from the Past 25 Years

Median and range between the 25th and 75th percentiles, for years with no clouds or snow only.

The satellite measures the loss of green, not the color of the leaves. Accuracy: about one week.
The countryside and low-lying forests have a weak signal: the 250-meter pixel blends houses, roads, and conifers.
The data does not yet reflect this fall.

Every tree changes in its own way

The beech turns copper, the maple turns yellow, and the rowan turns red. Choose a species.

Backlighting among the trunks of the beech forest, with red leaves on the trail — Backlit scene in the beech forest, halfway up the hillside.

A red-and-white trail marker with "P2" painted on a beech tree trunk — The P2 trail marker on a beech tree. The trail runs from Forca d'Acero to Macchiarvana: 1.3 km, about 20 minutes.

A road winding upward beneath a canopy of beech trees, with yellow and copper-colored leaves — The road to Forca d'Acero, beneath a canopy of beech trees.

General information; please check with the park rangers.

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