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Very thick cloud at a very low level

Not often you see that!

Administrator
Shoreham EGKA, United Kingdom

Hi Peter where do you get these images from ?

Alex
Shoreham (EGKA) White Waltham (EGLM), United Kingdom

Peter wrote:

Not often you see that!

The radar returns over the channel are artefacts — there’s no precip there. You see that quite a lot in fact, when there’s a low level inversion. You’re actually seeing backscatter from the surface ducted by the atmosphere.

How can you tell, @bookworm, and how can one trust radar images at all?

Not many people will be looking at eg IR also as that sort of data is not widely known.

Administrator
Shoreham EGKA, United Kingdom

Well that’s why you look at multiple sources. Even if you didn’t look at the IR, the day was as flat as a pancake. There was nothing to make it rain. And it was a perfect day for ducting.

the day was as flat as a pancake. There was nothing to make it rain. And it was a perfect day for ducting.

How would one know?

I am trying to learn. I have never heard of this effect. Can you post more detail?

Administrator
Shoreham EGKA, United Kingdom

I hadn’t heard of it either, but this NOAA link looked educational.
I think the idea is that the radar return from the ground looks like an extremely dense cloud :-)

Last Edited by DavidS at 24 Jul 16:38
White Waltham EGLM, United Kingdom

Peter wrote:

How would one know?

I checked this area the day you posted.
We have a satellite high resolution view at work.
And indeed, there was no cloud.

I agree; I flew there at the time.

There were some small clouds. I think I got a photo but my pc has packed up…

Administrator
Shoreham EGKA, United Kingdom

Peter wrote:

but my pc has packed up…

Your XP which was no longer supported by Google drive or whatnot? Probably was way overdue for replacement

Last Edited by Aviathor at 24 Jul 17:46
LFPT, LFPN
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