As the system crossed the Arkansas River near Newkirk, Oklahoma, the storm dropped a pint-sized “mesoscale snow band” that appeared to be about eight kilometers (5 miles) across at its widest point. The Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite acquired this natural-color image of the snow on January 15, 2013.
While most lava from the Pu’u ’O’o crater on Kilauea has flowed south towards the coast over the years, the most recent flow—Kahauale’a 2—is pushing northeast into ohia lehua forests in Hawaii’s interior. The Advanced Land Imager (ALI) on NASA’s Earth-Observing 1 (EO-1) captured these images of Kahauale’a 2 on February 2 and March 11, 2014.
When studying volcanoes, detecting even the slightest movements of the land surface can tell a lot about what is happening below. The ground rises and falls—expands and contracts—with the movement of magma in subterranean chambers. But detecting the amount and location of such subtle movements is difficult.