October 21, 2021 - Autumn Along the Appalachians

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Appalachian Mountains
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The glorious tints of autumn were beginning to color the Appalachian
Mountains and the East Coast of the United States in mid-October 2021.
The Moderate Resolution Imaging Spectroradiometer (MODIS) on board
NASA’s Terra satellite acquired a true-color image of the scene on
October 19.

Each fall, oranges, reds, and yellows color the deciduous forests of
North America, sweeping first across the northern tier and highest
elevations where temperatures are cooler. Colors in the high
Appalachians tend to peak mid-October, then the lower elevations begin
to glow by early November.

This year, many Eastern locations are reporting low or late color
brought about by warm temperatures and uneven rainfall. However, the
early autumnal glow is clearly visible in this scene, especially along
the folds of the Appalachians and the shore of Lake Erie. Farmland in
Delaware, Maryland, and Virginia also wears autumn colors. Gray pixels,
which resemble spider webs arranged in a long row, crawl northward east
of the mountains. These are man-made structures along the I-95
corridor. The web-like sprawl is created by cities, such as (from south
to north) Richmond, Virginia; Washington, D.C.; Baltimore, Maryland;
and Philadelphia, Pennsylvania.

NASA’s Worldview App allows comparison of MODIS imagery acquired of the
same area on different days. A roll-over comparison Terra MODIS images
acquired on October 19 and June 16, 2021, click here.

Image Facts
Satellite: Terra
Date Acquired: 10/19/2021
Resolutions: 1km (464.2 KB), 500m (1.3 MB), 250m (3 MB)
Bands Used: 1,4,3
Image Credit: MODIS Land Rapid Response Team, NASA GSFC



https://modis.gsfc.nasa.gov/gallery/individual.php?db_date=2021-10-21

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