Cloud Streets on Earth | International Space Station

Cloud Streets on Earth | International Space Station

Expedition 73 Commander and flight engineer Takuya Onishi of the Japan Aerospace Exploration Agency (JAXA): "If I had woken up at 5:20 this morning, the orbit would have passed beautifully over Japan, but when I woke up it was already 8 o'clock."

"I gave up on the photo of Japan and took a different one."

"Cloud swarm ☁️"

"It's hard to get a sense of the height, but I think they might be cumulonimbus clouds."

Cloud streets are parallel bands of cumulus clouds that form when frigid air near the surface blows over warmer waters, while a warmer air layer (a temperature inversion) rests over the top of both. The comparatively warm water gives up heat and moisture to the cold air, leading columns of heated air (thermals) to rise through the atmosphere.

The warm air in the temperature inversion acts like a lid such that the moist, rising thermals hit the air mass above and roll over on themselves. This creates parallel horizontal cylinders of rotating air. On the upward side of the cylinders (rising air), the moisture cools and condenses into flat-bottomed, fluffy-topped cumulus clouds that line up parallel to the direction of the wind. Along the downward side (descending air), skies remain clear to make a cloudy-clear-cloudy striping pattern.

Follow Expedition 73:

https://blogs.nasa.gov/spacestation/

Expedition 73 Crew

Station Commander: Japan Aerospace Exploration Agency (JAXA) Flight Engineer Takuya Onishi
Roscosmos (Russia) Flight Engineers: Kirill Peskov, Sergey Ryzhikov, Alexey Zubritskiy

NASA Flight Engineers: Anne McClain, Nichole Ayers, Jonny Kim

An international partnership of space agencies provides and operates the elements of the International Space Station (ISS). The principals are the space agencies of the United States, Russia, Europe, Japan, and Canada.

Learn more about the important research being operated on Station:
https://www.nasa.gov/iss-science

For more information about STEM on Station:

https://www.nasa.gov/stemonstation
Science, Technology, Engineering, Math (STEM)

Image Credit: NASA's Johnson Space Center/JAXA/T. Onishi

Release Date: May 24, 2025

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