Tonga volcano and air pressure in Helsinki

This was indeed surprisingly well detectable event, considering the distance. My tags did detect the pressure wave here in southern Finland as well.

My tags are sampled at 5s interval and every measurement stored, my results look like this for the first wave:

And the 2nd wave:

To me the most interesting detail is how the air pressure has all these tiny ripples long after the wave, while being relatively calm and stable before the wave.

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