On our morning walk, my wife and I spotted an unusual cloud formation, as seen in the photo above. We first noticed the large hole in the formation of altocumulus clouds. Then, my wife spotted a second one while I focused on the knife blade-looking break to the right of the holes.
Airliners caused all three of these anomalies. You can see the remnants of the contrails left by the speeding planes. Notice how they are spread out in the mid-level atmosphere where altocumulus clouds form. These jets simply punched holes in these vertically climbing clouds. The instability aloft caused the holes and contrails to widen.
The National Weather Service said this about altocumulus clouds: “Altocumulus clouds with some vertical extent may denote the presence of elevated instability, especially in the morning, which could become boundary-layer based and be released into deep convection during the afternoon or evening.”
We are still waiting for the deep convection to produce some much-needed rain here in Virginia.
© Bruce Stambaugh 2024
Roadkill Crossing 
You must be logged in to post a comment.