Another post that was updated that ive missed despite a reminder from Jo

Thanks for the additional detail/pictures PLB.
Thats a LOT of tress downed. Derechos sure pack a punch !
Something that caught my eye in the first 2 pictures was how the areas of trees damaged appears to be quite well defined ?
Not sure why that would be the case ?

But certainly enjoyed the thread start to finish

That bow echo produced a tornado near Kolín, Czech Republic. Later, in afternoon we had a HP supercell, producing winds up to 110km/h (70mph respectively). I caught few lightning strikes (only around 30) on that day, because it wasn't really hard to capture them, due to 100 (or so) lightning strikes per minute. Wind caused some damage, especially uprooted some trees and damaged roofs. Unfortunately, structure was not visible because it was too dark (it was 11pm in night).

Hi

The storm was perfect. I had never seen anything like this. Anvil spread to a very huge area, was full of lightning.
This day will be in our memories for a long time.

We had problems with the forecast. We was thinking abuot supercells, could appear. It was a very high risk that the potential supercells bring huge hail. In the troposphere was very dry, so big hail and strong wind from supercells was expected. But there is a large layer of CIN, which prevented the development of supercells.

Then there was a very rapid development of storms in line convergence. In very quickly formed a squall line, and later bow echo.

If there was more moisture appeared to be a tornado outbreak.

Conditions that day was like a tornado alley.

Greetings

What a beautifull post!

Thanks for the sattelite loop

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