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The closest I have seen to that was after 9 days of -20C (-4F) temperatures, which also froze the surface of some large rivers here in Scotland. Warmer than that and the ice doesn't seem to grow ...
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The closest I have seen to that was after 9 days of -20C (-4F) temperatures, which also froze the surface of some large rivers here in Scotland. Warmer than that and the ice doesn't seem to grow ...