streamer clouds

Last September I flew from Santa Rosa to Renton and photographed an
interesting cloud which reminded me of what a jet contrail might look
like if somebody flew an arc over a river. Pictures posted he

http://www.flying20club.org/streamer.html

Anybody seen anything like this before? Any idea what might make it?

Jose
--
"Never trust anything that can think for itself, if you can't see where
it keeps its brain." (chapter 10 of book 3 - Harry Potter).
for Email, make the obvious change in the address.

"Jose" wrote in message
...
Last September I flew from Santa Rosa to Renton and photographed an
interesting cloud which reminded me of what a jet contrail might look like
if somebody flew an arc over a river. Pictures posted he

http://www.flying20club.org/streamer.html

Anybody seen anything like this before? Any idea what might make it?

Could you clarify the question?

I can't tell from looking at the photos what cloud it is you're asking
about. There are cirrus, contrails, low-level stratus, and even some
cumulus-wannabe clouds in there. If I had to guess, I'd suspect you're
asking about the low-level cloud that is skinny through the right two-thirds
of the photo, expanding into a larger formation to the left one-third. But
you also say the cloud reminds you "of what a jet contrail might look like",
and that cloud doesn't look anything like a contrail to me (and of course
isn't where one would see a contrail).

Maybe you could provide a photo with the cloud in question highlighted
somehow (outlined, or maybe use Photoshop or GIMP to darken the areas
outside your interest).

Pete

If I had to guess, I'd suspect you're
asking about the low-level cloud that is skinny through the right two-thirds
of the photo, expanding into a larger formation to the left one-third.

Yep, that's the one.

Jose
--
"Never trust anything that can think for itself, if you can't see where
it keeps its brain." (chapter 10 of book 3 - Harry Potter).
for Email, make the obvious change in the address.

On Sat, 4 Nov 2006 18:17:41 -0800, "Peter Duniho"
wrote:

Maybe you could provide a photo with the cloud in question highlighted
somehow (outlined, or maybe use Photoshop or GIMP to darken the areas
outside your interest).

Look for the black arrow with the words "This Cloud" over it.

z

Winds aloft and a little venturi effect.



"zatatime" wrote in message
...
| On Sat, 4 Nov 2006 18:17:41 -0800, "Peter Duniho"
| wrote:
|
| Maybe you could provide a photo with the cloud in
question highlighted
| somehow (outlined, or maybe use Photoshop or GIMP to
darken the areas
| outside your interest).
|
| Look for the black arrow with the words "This Cloud" over
it.
|
| z

Winds aloft and a little venturi effect.

So the winds essentially blow down the canyon, the pressure drops
because they are moving faster through the canyon than elsewhere, the
drop in pressure causes the moisture to condense?

Interesting that the affected area is so thin.

Jose
--
"Never trust anything that can think for itself, if you can't see where
it keeps its brain." (chapter 10 of book 3 - Harry Potter).
for Email, make the obvious change in the address.

Fly long enough and you'll see a river covered with fog and
you can see the fog flowing down stream with ripples just
like it was the water. My guess in the picture you posted,
there was a front with wet and dry air, moderate to strong
winds and terrain effects.
Lenticular clouds, roll clouds, wall clouds, all are
effected by or caused by the terrain.




"Jose" wrote in message
m...
| Winds aloft and a little venturi effect.
|
| So the winds essentially blow down the canyon, the
pressure drops
| because they are moving faster through the canyon than
elsewhere, the
| drop in pressure causes the moisture to condense?
|
| Interesting that the affected area is so thin.
|
| Jose
| --
| "Never trust anything that can think for itself, if you
can't see where
| it keeps its brain." (chapter 10 of book 3 - Harry
Potter).
| for Email, make the obvious change in the address.

"zatatime" wrote in message
...
Look for the black arrow with the words "This Cloud" over it.

Uh...thanks. That wasn't there when I looked at the picture. Presumably
Jose added that at my request. I'm sure I would have noticed it had it been
there when I took a look.