[X] My Assistant

[rogelio]

Behold my glory! Here's one more shot of my Kauai parhelion taken in the late afternoon on 15 January 2007 on the Kalalau Lookout - Pihea trail at 22°09'N, 159°37'W. The view is NW down off a knife-edge ridge and of course the sun is low behind me. I also have a short movie with the glory "moving" (me running back and forth). Some wonderful alternate names for this phenomenon (courtesy of wikipedia) are "Buddha's light" and "the Brocken spectre".

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[t_oner]

I really don't know what it is, that's why I am asking

It was perfectly round and huge and arrived from east and disappeared west and cirrus like clouds were exactly at the same height with the clearing as their positions did not change with the perspective. I watched it for more than one hour. The light at the center is sun and a linear rainbow-like belt could be seen near it.

[ugordan]

I really don't know what it is, that's why I am asking

Apparently, these are called "hole-punch" clouds. I couldn't find out much about them, but here's a page that talks about them a little:
Hole-punch clouds over Melbourne

They sure look impressive and UFO-like and IIRC they've often been talked about in the context of super secret weapons tests and other weird theories.

EDIT: Ahhh, I knew I'd seen them on APOD before, Doug

[djellison]

http://apod.nasa.gov/apod/ap040112.html
"A leading hypothesis holds that the hole-punch cloud is caused by falling ice-crystals. The ice-crystals could originate in a higher cloud or be facilitated by a passing airplane exhaust. If the air has just the right temperature and moisture content, the falling crystals will absorb water from the air and grow. For this to happen, the water must be so cold that all it needs is a surface to freeze on. The moisture lost from the air increases the evaporation rate from the cloud water droplets so they dissipate to form the hole. The now heavier ice crystals continue to fall and form the more tenuous wispy cloud-like virga seen inside and just below the hole. Water and ice from the virga evaporates before they reach the ground."


Doug

[t_oner]

ugordan and Doug thank you very much for the answers

[djellison]

Funky clouds time

These were seen in November '05 near Salobrena in Southern Spain - late afternoon, something to do with the Mediterranean, the Sierra Nevada, and wind.

Doug

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[djellison]

And fog - lots and lots of fog - over the Wye in Gloucestershire, as seen from Symonds Yat. A really bad pan - PTGui wont find any keypoints - and to be honest, I can't find too many either

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[climber]

Found an interesting one in my old pictures :


and this is the context (sorry it's quite blury):

[climber]

Would you think this could be a green flash (Kauaii Island) ?

[rogelio]

djellison wrote: "These were seen in November '05 near Salobrena in Southern Spain - late afternoon, something to do with the Mediterranean, the Sierra Nevada, and wind"

Doug - I think those are "mountain lee waves" (http://esaudubon.org/leewave.htm) commonly seen in California mountains, too, where they are known as "Sierra Waves"

[mps]

Silver clouds. Picture taken on July 2004 in Estonia.

[djellison]

Ahh - are those noticelull...err...noticeu....nocilleut.....nocieoccinocoe......ett

noctilucent ?

Doug

[nprev]

I took this picture last year, does anybody know what it is?

I recall seeing features like that when I lived in Washington state, Tayfun. As near as I can figure, they seem to be areas of updraft that cut through a thin stratocumulus cloud deck.

[climber]

I recall seeing features like that when I lived in Washington state, Tayfun. As near as I can figure, they seem to be areas of updraft that cut through a thin stratocumulus cloud deck.

Bad ob you nprev, you're only looking at the nice pictures instead of reading the answers

[mps]

Ahh - are those noticelull...err...noticeu....nocilleut.....nocieoccinocoe......ett

noctilucent ?

Doug

Yes they are. I didn't know the proper term in english.