cdcollura
EF5
Good day,
The picture below is one of some interesting "hole punches" in a deck of altocumulus clouds high over Lakeland, Florida...
This formation is simply a "subsidence hole" where sinking air caused a section of the cloud to dissipate.
Also note that some condensation / freezing has occurred in the center of the hole and formed a cirrus-like cloud in it (probably snow as the AC deck was about 16,000 feet AGL).
The "hole" may have been triggered by a sinking drier air parcel above it (like a negative bouyancy "thermal") or even passage of a jet airliner punching through the cloud deck causing a "dis-trail".
Chris C - KG4PJN
The picture below is one of some interesting "hole punches" in a deck of altocumulus clouds high over Lakeland, Florida...
![holeac.jpg](/proxy.php?image=http%3A%2F%2Fwww.sky-chaser.com%2Fdata%2Fmisc%2Fholeac.jpg&hash=43cf22bc462dc964a76d641a09ee76b6)
This formation is simply a "subsidence hole" where sinking air caused a section of the cloud to dissipate.
Also note that some condensation / freezing has occurred in the center of the hole and formed a cirrus-like cloud in it (probably snow as the AC deck was about 16,000 feet AGL).
The "hole" may have been triggered by a sinking drier air parcel above it (like a negative bouyancy "thermal") or even passage of a jet airliner punching through the cloud deck causing a "dis-trail".
Chris C - KG4PJN