David Drummond
Member
Cold air funnel. Looks like a rare one that might actually have made it to the surface, or at least very close.
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Landspout or small rain shaft?
- Thread starter David Schuttler
- Start date
Paul Austin
I don't know. This one looks more like a jet contrail shadow to me. The video quality makes it difficult to tell, but a contrail not too far above the cloud layer with the sun positioned behind as it is would cast a shadow on the layer with a similar shape.
Scott Weberpal
EF5
Looks to me like a jet contrail in the way it blends with the clouds in the background 
Brian Stertz
EF5
Yeah Paul I am in agreement that this is a contrail shadow...you can tell by the background mid-high level clouds.
Chip Redmond
EF4
I agree with the above three. There is no definitive starting point within the altocumulus/altostratus deck, it seems to just disappear. Contrail.
Chip
Chip
David Drummond
Member
I thought about the contrail shadow, but decided the other way because A) it seems to change shape quite a bit in a relatively short period of time, not something a contrail usually would do B) it almost looks like you can see some sort of laminar outer wall at once point.
It's hard though because the video is so shaky to tell if there is any actual rotation or not. I steady camera on a non moving base would have helped a lot in the case.
It's hard though because the video is so shaky to tell if there is any actual rotation or not. I steady camera on a non moving base would have helped a lot in the case.
Danny Neal
EF5
I agree 100%, it looks a thousand times less than the former video.Looks to me like a jet contrail in the way it blends with the clouds in the background
David Drummond
Member
Ok I went and watched it again. I could be wrong. What puzzles me if it's a contrail shadow is, assuming the video was shot pretty much continously, how much it changed position in less than 2 minutes. Contrails just don't move/modify that quickly. At least none I ever saw.
Scott Weberpal
EF5
It may not be the contrail itself we're looking at, but the shadow of a contrail. The contrail itself may be somewhat higher than the cloud deck casting it's shadow on a somewhat translucent layer. That would explain the fast movement (sun moving, clouds moving, contrail moving in a different direction at a different height in atmo., etc.).
I've also seen jets moving through clouds leave a "scar" in the clouds similar to what is seen here. It's not a contrail per se, but I guess the exhaust seeding the clouds creating the appearance of a streak through the cloud.
