In weather station news, weather pros and amateurs alike have posted their captures of the pressure wave that was generated by the Tonga volcano event. The first wave, which arrived January 15th a few hours after the explosion, traveled northeasterly across the US and was visible on my station’s barometer. The second wave arrived more than 24 hours later. It had traveled the long way around the globe and moved southeasterly. My barometric graph plainly shows it around 1 AM on January 16th.