The pressure wave from the underwater volcanic eruption in the South Pacific arrived in the Stirling atmosphere on Saturday evening.
The huge eruption in the ocean near Tonga happened in the early hours of Saturday morning (UK Time) resulting in Tsunamis in nearby countries but the effects of the eruption have travelled around the globe.
The below tweet from The Met Office shows the UK smooth pressure trace during Saturday afternoon being interrupted during Saturday evening when the first pressure wave arrived.
The below chart shows our own Stirling Weather pressure chart on Saturday being interrupted by the first and second waves marked by arrows with the ripples of erratic pressure clearly visible.
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