Talk:Roll cloud

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The article pictures a roll cloud at the leading edge of a thunderstorm, and I suppose that's the easiest place to find one. But I saw 3 of these (we called them "rollers") detached from other activity in the years I was growing up in Macomb, IL. One of them appeared on a day when there were thunderstorms on the horizon, but the other two appeared in otherwise clear blue skies. I think they were caused by a downdraft hitting the Mississippi river bluff just right, and then kept going for 50 miles downwind. All three were about 1000ft above the ground, 1000ft diameter, extended horizontally to both horizons, and actually rotated with a slow backspin while they went by. —Preceding unsigned comment added by 138.87.153.89 (talk • contribs)

Those were actually gravity waves. Dan100 (Talk) 17:49, 15 June 2007 (UTC)

[edit] Picture shows a shelfcloud

The picture of the cloud in Enschede actually shows a shelfcloud, it was fully attached to the storm itself. I was the most magnificent shelf ever seen in the Netherlands. Yet, because there is no Dutch word for Shelfcloud even the Royal Dutch Meteorological Institute called it a Rollcloud.—Preceding unsigned comment added by 212.178.64.26 (talk • contribs)

I have replaced the awesome image of the Netherlands shelf cloud with a still pretty awesome, but more accurate, roll cloud. - BT 17:51, 30 May 2006 (UTC)

Looks like it got reverted or otherwise replaced, I'm correcting it now.