Jupiter’s Great Red Spot is an atmospheric storm that has been raging in Jupiter’s southern Hemisphere for at least 400 years. It rotates counter-clockwise (anti-cyclonic) and makes a full rotation every six Earth days. The spot is prevented from moving north and south across the planet by an eastward jetstream to its south and a very strong westward jetstream to its north. Its position moving east and west changes quite frequently. The spot is large enough to engulf three Earths!
Winds at the very edges of the storm gust to 432 km/h, but inside the storm winds seem to be somewhat stagnant with no inflow nor outflow. The cloud tops of the GRS are about 8 km above the surrounding clouds.
