Neptune's Great Dark Spot is an Earth-sized hole in the thick cloud cover of the methane atmosphere of Neptune. The size, shape, and location of the spot vary greatly over time; it even disappears and reappears occasionally. Horrendous winds near the spot were measured by Voyager 2 to be about 1,500 miles per hour (2,400 kph). These are the strongest recorded winds in our Solar System.

Prominent storm system in the atmosphere of Neptune, located near the equator of the planet. The system is comparable in size to the Earth.

a large storm raging on the planet Neptune