POLAR ORBITING SATELLITE IMAGE

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05-21 09:00
05-21 07:19
05-21 05:59
05-21 05:38
05-21 04:19
05-21 02:39
05-21 02:34
05-21 00:29
05-20 23:27
05-20 22:49
05-20 22:31
05-20 21:45

EXPLANATION

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Bluish = high clouds, often thin
White = medium level clouds, high thick clouds or snow/glacier
Yellow = low clouds, sea ice or dirty snow