The pressure changes caused by the Tonga eruption was detected by the EPSS pressure sensors
In the West Pacific, a volcano erupted around 4 UTC on 15 January, 2022, near the Tonga islands. It caused pressure changes across the globe and these changes were detected by pressure sensors at the Széchenyi István Geophysical Observatory (near Nagycenk, Hungary) of the Institute of Earth Physics and Space Science. The pressure changes reached Hungary about 15 hours after the eruption. The pressure has changed more than 1 hPa according to the newest pressure sensor of our observatory (Väisälä PTB110). The shock wave reached our area from two directions, therefore two perturbed periods can be seen on the graph (after 19 UTC on 15 January and ~1 UTC on 16 January).