Final answer:
Like on Earth, Jupiter has high- and low-pressure regions that generate wind patterns, particularly strong east-west winds. These winds include a speedy eastward jet stream at the equator, and Jupiter's weather is also marked by large storms and high-pressure regions. Similarly, Neptune's weather includes extremely fast east-west winds.
Step-by-step explanation:
On Earth, high- and low-pressure regions are bounded by high-speed winds, and the same principle applies to Jupiter. The atmospheres of Jovian planets, including Jupiter, have many regions of high and low pressure, leading to wind patterns that are distorted by the planet's rotation. By observing the cloud patterns, scientists can track atmospheric circulation and measure wind speeds on these gas giants.
Jupiter, in particular, has east-west wind patterns that are quite stable over time. A jet stream flows eastward at Jupiter's equator at approximately 90 meters per second, which is comparable to the speed of jet streams in Earth's upper atmosphere. Higher latitudes exhibit alternating east and west jet streams with symmetrical patterns across both hemispheres.
Moreover, Jupiter experiences local disturbances in the form of weather systems or storms, just like Earth. The most notable are the large, oval-shaped, high-pressure regions similar to Earth's high-pressure systems but on a much larger scale. Likewise, Neptune's weather also features strong east-west winds, with its equatorial jet stream reaching near supersonic speeds.