- Cloud type, Ac: high Altocumulus cloud in strong jet stream winds
- W020616Z
- Cloud type, Ac: very high Altocumulus cloud bands and strips with a gentle, woolly element pattern. These clouds are in slow transition to Cirrus, having recently formed as supercooled water droplets condensing in a strong jet stream winds aloft. With time, elements will freeze, diffuse, merge and become less detailed but fibrous Cirrus clouds. See a close-up detail in W020620Z.)
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