Tag Archives: clouds

Roll Cloud

Posted on 2014-02-14 by arjaybe

Cloud of the Day – Roll Cloud Roll cloud is a form of arcus cloud, defined as a low, horizontal cloud formation. Roll cloud is the milder of the two forms of arcus cloud. The other, shelf cloud, is often … Continue reading →

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Aurora

Posted on 2013-12-01 by arjaybe

Cloud of the Day – Aurora Aurora is not clouds. Clouds can’t form in the tenuous wisps of atmosphere found at the heights, approximately 90 – 1,000 kilometers, where aurora occurs. Therefore, it is wrong for me to call aurora … Continue reading →

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Noctilucent

Posted on 2013-11-18 by arjaybe

Cloud of the Day – Noctilucent You thought nacreous clouds were high? Well, at as much as 80,000 feet they are, but compared to noctilucent clouds, nacreous are practically scraping the ground. Like nacreous, noctilucent clouds are best seen when … Continue reading →

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