more clouds today

Have them here as well still. And I saw something new today. One of he CTs that was laid down that had yet to fully expand (sort of in the puffy state but still clearly a trail) was twisted like a corkscrew!? I saw two of these today actually but no camera.

These pictures look like what are sometimes referred to as "gravity wave" or "altostratus undulatus" clouds. (Similar formations, but the method of formation is different.)

Gravity wave: http://en.wikipedia.org/wiki/Gravity_wave

Altostratus undulatus: http://en.wikipedia.org/wiki/Altostratus_undulatus_cloud

They seem to be fairly common around here. So are sun dogs and various other rainbow-phenomena associated with the refraction of light by clouds or moisture in the air. (Yesterday I saw a huge circle around the sun, with sun dogs. Too bright to look at comfortably without sunglasses!) Are there actual published studies that associate these clouds and rainbows with earthquakes, or is the evidence purely anecdotal? Just curious...

Thanks!

Carole

Dude_in_CA wrote:Have them here as well still. And I saw something new today. One of he CTs that was laid down that had yet to fully expand (sort of in the puffy state but still clearly a trail) was twisted like a corkscrew!? I saw two of these today actually but no camera.

Hey Dude...

Perhaps the twist was due to vortices in the air turbulance behind the plane. Check out the picture on this page, about halfway down, labeled "Research Smoke Trails". Not saying what you saw was necessarily smoke, but it could have been, and at any rate the dynamics would have been the same.

http://contrailscience.com/things-that-are-not-contrails-or-chemtrails/

I watched a helicopter doing some crop dusting one time... You could see the mist curling around into a corkscrew behind the helicopter, because of the air currents created.

I frequently see trails that look like a normal trail strung with popcorn.

Carole

LaLuna wrote:These pictures look like what are sometimes referred to as "gravity wave" or "altostratus undulatus" clouds. (Similar formations, but the method of formation is different.)

Gravity wave: http://en.wikipedia.org/wiki/Gravity_wave

Altostratus undulatus: http://en.wikipedia.org/wiki/Altostratus_undulatus_cloud

They seem to be fairly common around here. So are sun dogs and various other rainbow-phenomena associated with the refraction of light by clouds or moisture in the air. (Yesterday I saw a huge circle around the sun, with sun dogs. Too bright to look at comfortably without sunglasses!) Are there actual published studies that associate these clouds and rainbows with earthquakes, or is the evidence purely anecdotal? Just curious...

Thanks!

Carole

La Luna,

Those look like the type of clouds that we have been seeing the past couple of days down here in Northridge. Some were very faint, but others more pronounced.

Thanks for posting the links that went into detail about how they are formed.