High-resolution satellite images of Norris Geyser Basin showing the area of Porcelain Basin and Nuphar Lake in April 2024

High-resolution satellite images of Norris Geyser Basin showing the area of Porcelain Basin and Nuphar Lake in April 2024.  In the left image, acquired on April 2, 2024, springs on Porcelain Terrace are full of water, and warm hydrothermal water is flowing into Nuphar Lake, keeping the north part of the lake free of ice.  Boardwalks in the area appear as white lineations because they are covered in snow. In the right image, acquired on April 21, 2024, the springs on Porcelain Terrace are dry, and there is no water entering Nuphar Lake (which was free of ice due to the change in seasons).  This image, which includes some wispy cloud cover that causes a slightly fuzzy appearance, was acquired after the occurrence of a small explosion on April 15, 2024, that probably coincided with the change in hydrothermal activity on the terrace.  Imagery processed by R. Greg Vaughan (USGS), and data were collected by WorldView-3 satellite and made available thanks to the NEXTVIEW End User License Agreement between Maxar (formerly DigitalGlobe, Inc.), which supports Earth science research and applications.