Posted on 08/20/2023 11:13:55 AM PDT by MtnClimber
Explanation: What kind of cloud is this? A type of arcus cloud called a roll cloud. These rare long clouds may form near advancing cold fronts. In particular, a downdraft from an advancing storm front can cause moist warm air to rise, cool below its dew point, and so form a cloud. When this happens uniformly along an extended front, a roll cloud may form. Roll clouds may actually have air circulating along the long horizontal axis of the cloud. A roll cloud is not thought to be able to morph into a tornado. Unlike a similar shelf cloud, a roll cloud is completely detached from their parent cumulonimbus cloud. Pictured here, a roll cloud extends far into the distance as a storm approaches in 2007 in Racine, Wisconsin, USA.
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bttt
I’ve seen those in person and they are rather unnerving in a ‘War of the Worlds’ kind of way!
We always called them ‘Shelf Clouds’ but that could be something else...
“Unlike a similar shelf cloud, a roll cloud is completely detached from their parent cumulonimbus cloud.”
Duh. Missed the print - was too busy looking at the picture!
Did I hear that Willie Nelson, Snoop Dog and Paul McCartney were having a ‘Jam Session” in the backwoods of Wisconsin?
Maybe somebody’s trying to take their ‘prescription Nerve Tonic’ right about now.
The clouds of DOOM!!
I saw one of those some years ago on the way to work. I went right over our area.
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