Tag: Earth Observatory
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The Battle for Sullivan’s Island
Marshy, sandy terrain and an impassable inlet helped colonial forces repel British forces during a pivotal battle on the barrier island near Charleston, South Carolina, on June 28, 1776.
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A Turquoise Tint for the Black Sea
Phytoplankton added a milky blue hue to the waters of the Black Sea and nearby waterways in spring and summer 2026.
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Playing the Moon Game
Apollo astronauts previewed their roles as lunar field geologists in Alaska’s Valley of Ten Thousand Smokes.
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Rising Waters Swamp Lake Naivasha
Relentless rains are threatening a lake in Kenya’s Great Rift Valley that has become a key hub in the global flower trade.
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Signs of Thaw in the Bering Sea
Drifting sea ice fragments near Alaska’s Saint Lawrence and Nunivak islands and colorful water around the Yukon Delta heralded the approach of the summer solstice.
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Tropical Storm Arthur
The first named storm of the 2026 Atlantic hurricane season brought intense rainfall and the threat of flash flooding to the U.S. Gulf Coast.
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El Niño Is Underway
Satellite observations of sea surface height indicated that the 2026 event continued to strengthen in early June.
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Low Water at San Carlos Reservoir
Drought and water releases drained the Arizona reservoir to levels that have led to widespread fish deaths.
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Nebraska’s Wide, Rolling Domain
The Nebraska Sandhills—the largest system of sand dunes in the Western Hemisphere—stretch across about one-quarter of the state.
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Pumice Rafts Encroach on Admiralty Islands
Buoyant volcanic rock fragments from an underwater eruption drifted across the Bismarck Sea and choked island coasts.