Kīlauea summit thermal maps over the past year

This animated gif shows one year of thermal maps made from aerial visual and thermal imagery collected of Halema‘uma‘u crater at the summit of Kīlauea. The animated gif shows how the active lava lake has decreased in area over the past year, while the crater floor has grown in area. As of September 29, 2022, the active lake surface is limited to the western portion of the crater. The scale of the thermal map ranges from blue to red, with blue colors indicative of cooler temperatures and red colors indicative of warmer temperatures.