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Firstly – Happy Birthday Minty
Just looked at the atmospheric pressure from the weather station in the garden and it “saw” the pressure wave from the Tonga eruption.
Anyone else see it on their stats around 19:20 on 15th?19 Comments-
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The shockwave from the 1863 (?) eruption of Krakatoa was recorded passing around the globe SEVEN times as recorded on barograph traces! I don’t know what the Mount St.Helens explosion generated in comparison, but it would have been impressive, and flattened swathes of forest across a very extensive area.
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Well……….on Spaceweather they plotted the pressure variations across the USA and could track the pressure changes as the wave travelled across. Taking those times and rate of travel the predicted time of the wave crossing the UK was approx 19:20:
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I actually heard it, as did a large number of others in NZ over 2000km away!! Unreal. As for the tsunami it created when it arrived here it coincided with high seas from the tail end of a pacific cyclone and sunk some yachts in a Northland marina.
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Nothing on my weather station at around that time, although I can’t easily zoom on the data to properly interrogate it 😞
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Actually I’ve just realised I can download the full dataset so I will do that and plot it in excel 👍
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- September 15, 2023
WOW, not quite Krakatoa, but very powerfull!!!