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Strange Cloud Phenomen Above Belgium  
User currently offlineSabena 690 From , joined Dec 1969, posts, RR:
Posted (11 years 3 months 2 weeks 2 days 8 hours ago) and read 1973 times:

Hi all,

On sundaymorning (around 9am), 10 minuts before heavy thunderstorms, I took some pictures of a strange phenomen of nature, which is called in Dutch 'rolwolken' (role clouds or so in English).

Can anybody give me some more info about this? Below are some pictures (thanks to forum member Turbotrent for the webspace):





Thanks for any info!

Regards
Frederic

12 replies: All unread, jump to last
 
User currently offlineEGGD From United Kingdom, joined Feb 2001, 12443 posts, RR: 34
Reply 1, posted (11 years 3 months 2 weeks 2 days 7 hours ago) and read 1794 times:

Its the evil chemtrails that they warned you about  Wow!

User currently offlineMas a330 From , joined Dec 1969, posts, RR:
Reply 2, posted (11 years 3 months 2 weeks 2 days 5 hours ago) and read 1769 times:

Beautiful!!!!

Would like to know more about it as well.


User currently offlineMbmbos From United States of America, joined May 2000, 2597 posts, RR: 1
Reply 3, posted (11 years 3 months 2 weeks 2 days 5 hours ago) and read 1756 times:

Talked to the in-laws last night, who live in Achel, Belgium, near Eindhoven, NL. They said this was quite a righteous storm.


User currently offlineYyz717 From Canada, joined Sep 2001, 16281 posts, RR: 56
Reply 4, posted (11 years 3 months 2 weeks 2 days 5 hours ago) and read 1756 times:

hard to tell from the pic, but it could be one weather front passing over/under another. did the temperature/weather change suddenly afterwards?




Panam, TWA, Ansett, Eastern.......AC next? Might be good for Canada.
User currently offlineKROC From , joined Dec 1969, posts, RR:
Reply 5, posted (11 years 3 months 2 weeks 2 days 5 hours ago) and read 1751 times:

It is hard to tell from the picture, but if I had to guess, I would say that it appears to be a break in the lower level stratus layer, and the light showing is from an altostratus layer above.

User currently offlineSabena 690 From , joined Dec 1969, posts, RR:
Reply 6, posted (11 years 3 months 2 weeks 2 days 5 hours ago) and read 1742 times:

LOL Dan!  Laugh out loud

Following forum member 744rules, they said something on TV about this, and this phenomen happens when warm clouds go upstairs, and come in collission with cold clouds coming downstairs.

Anyway, still very strange...

Yyz717 - no idea if the temperature decreased suddenly. I quickly went back inside, it was raining too heavy.

Mbmbos: it was indeed a very heavy storm. There even was a green shine in the dark clouds on a sudden moment which means heavy thunderstorms.

If someone has more information, please post it.

Regards
Frederic


User currently offlineCPH-R From Denmark, joined May 2001, 6000 posts, RR: 3
Reply 7, posted (11 years 3 months 2 weeks 2 days 5 hours ago) and read 1742 times:

It was pretty bad uphere too, though I was only exposed to the light side of it. Some places in Jutland, they had around 30-40 mm of rain in 1-2 hours!

User currently offlineSabena 690 From , joined Dec 1969, posts, RR:
Reply 8, posted (11 years 3 months 2 weeks 2 days 5 hours ago) and read 1740 times:

@KROC,

I do not think it is light...

How strange nature can be!

Regards
Frederic


User currently offlineKROC From , joined Dec 1969, posts, RR:
Reply 9, posted (11 years 3 months 2 weeks 2 days 4 hours ago) and read 1728 times:

From the middle picture, it looks as if there is a split in the low level stratus, maybe caused by winds aloft, 2 different air masses etc. Hence my guess. Like I said though, hard to venture a guess from the pics.

User currently offlineStratofish From Germany, joined Sep 2001, 1051 posts, RR: 5
Reply 10, posted (11 years 3 months 2 weeks 2 days 1 hour ago) and read 1699 times:

Did it look like they were rotating a bit and moving over you?
If so they were indeed roll couds. They happen mostly in the downdraft area of a thunderstorm. Often this is the area right before the precipitation/raining one. Roll clouds CAN be an indication of high wind gusts and turbulences.
Sometimes they can happen along with the rear flank downdraft. AFAIK, roll clouds and shelf clouds are a clear sign of a supercell, so you better seek shelter if you see them. Although I have never seen a roll cloud yet myself  Sad.

Stratofish

[Edit:] Apparantely they can travel long distances: http://www.dropbears.com/brough/glory89.htm
I can´t find my meteorology book at the moment so that´s pretty much all I know about these phenomena.

[Edited 2003-06-09 19:37:32]


The Metro might be the Sub(optimal)way
User currently offlineAA61hvy From United States of America, joined Nov 1999, 13977 posts, RR: 57
Reply 11, posted (11 years 3 months 2 weeks 1 day 23 hours ago) and read 1663 times:

Maybe Doc Brown and Marty went back in time again...?


Go big or go home
User currently offlineSeb146 From United States of America, joined Nov 1999, 11658 posts, RR: 15
Reply 12, posted (11 years 3 months 2 weeks 1 day 22 hours ago) and read 1654 times:

Cool light pole, too!

Sometimes when I have gone to the beach on the Columbia River just west of here, I have seen clouds similar to this. Kinda freaky but cool to watch.

GO CANUCKS!!



Life in the wall is a drag.
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