![]() Because of this air sucking, wall clouds can rotate vertically (but not all of them do). This is where all the warm, humid air is being sucked up into the storm. A wall cloud is a narrow projection of the cloud base between the rainy downdraft side of the storm and the rain-free updraft on the other side. Speaking of scary, dangerous, and rotating, that brings us to wall clouds. They can even rotate horizontally, which really looks scary, but even that isn’t dangerous. They look super scary, but are not dangerous in and of themselves. Anyway, it’s a shelf cloud, not a wall cloud. Doesn’t it look like a wall? Like many other times in my life, I have found out I am wrong. I always thought that these were wall clouds. Original upload by Solitude – From English Wikipedia, CC BY-SA 3.0, via Wikimedia Commons. They mark the leading edge of the storm front and, when they pass by, the temperature generally drops noticeably and winds can increase significantly. Shelf clouds are wedge-shaped, horizontal formations at the base of the storm. With severe weather season quickly approaching, I wanted to share a few things that I very recently learned about thunderstorms:īonus Fun Fact: Shelf clouds come at the leading edge of storms and wall clouds (where tornadoes form) appear at the rear. I was clearly mistaken and I apologize for that. I didn’t think it was necessary to put together an email with my office schedule and, by extension, a bonus fun fact. Well, that’s because I was teleworking this week (and next week too). I received a few comments about how I didn’t do a bonus fun fact last week.
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