POLAR ORBITING SATELLITE IMAGE

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05-18 06:12
05-18 05:07
05-18 04:51
05-18 04:31
05-18 03:26
05-18 03:07
05-18 01:46
05-17 23:57
05-17 23:10
05-17 22:48
05-17 22:18
05-17 21:26

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