[Leica] Strange Clouds - LUG Meteorologists, please.

[hlritter at mindspring.com (Howard L Ritter, Jr)]

I believe these are "mammary" or mammatus clouds, formed by cold air sinking 
down from the bottom of a cumulonimbus cloud in its actively forming phase. 
This means they're usually transient, as you observed. Were there 
cumulonimbus or storm clouds, better yet an anvil cloud, in the area at the 
time?

--howard


----- Original Message ----- 
From: "Peter Dzwig" <pdzwig@summaventures.com>
To: <LUG@leica-users.org>
Sent: Tuesday, May 10, 2005 4:06 AM
Subject: [Leica] Strange Clouds - LUG Meteorologists, please.


> Saw this recently:
>
> http://gallery.leica-users.org/album92/StormClouds200504
>
> Didn't have an appropriate filter but have worked to bring the sky out as 
> we saw it; forget any artefacts, please.
>
> I don't think that I've ever seen anything like it. Does anyone know what 
> it is? It moved over us and within about ten minutes began to disperse, 
> although it was visible moving away for about thirty minutes lessening all 
> the time
>
> TIA,
>
> Peter Dzwig
>
>
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