OBK, yes, we know the connection with mountain waves. The waves explain why you get lenticular cloud, but not why you get several of them stacked up.
Speedbird, that sounds almost plausible - all the thinking I'd been doing was based on a single airmass. But would you really get several airmasses within a fairly small vertical extent?
Seems like me and my friends aren't the only ones who don't completely understand this! Keep the ideas coming guys!
FFF
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