Bering Sea Thaw Captured in Detailed Satellite Views

When clouds finally parted in early June 2026, NASA satellites captured the approach of summer in the Bering Sea. These images, which were acquired by the MODIS instrument on the Terra satellite on June 3, show a clear seasonal transition. Whereas the natural-color view displays the scene as human eyes see it, the false-color version highlights ice in light blue. In this false-color view, tundra and marsh vegetation appear green, while ice-free rivers and lakes are colored dark blue.

In the middle of these transitioning waters lie Saint Lawrence and Nunivak islands, both of which have volcanic origins. These large islands feature extensive basaltic lava flows that form small shield volcanoes, alongside low craters known as maars. Saint Lawrence Island is situated 150 miles south of the Bering Strait, which separates Alaska from the Russian Far East. It remains one of the last above-water remnants of the land bridge that connected Asia and North America.

Although pack ice persisted on the northeast side of Saint Lawrence Island, other sea ice began to melt and drift. Winds and ocean currents pushed these melting ice fragments into intricate swirling patterns that became wispier as the pieces shrank.

Meanwhile, a brown plume of sediment and organic matter, which was carried by rivers, lined the Alaskan coast. This runoff entered the ocean near the Yukon Delta, a vast wetland where the Yukon River splits into channels. Sediment concentrations in this delta typically rise in late May or early June after the river ice has broken up. Consequently, rain and melting snow carry eroded materials downstream, coloring the Bering Sea as the summer solstice draws near.