I’m a private pilot. I was taking off when it happened and the tower radioed me to check my altimeter once more because they weren’t sure if they were having an

I’m a private pilot. I was taking off when it happened and the tower radioed me to check my altimeter once more because they weren’t sure if they were having an equipment malfunction. I looked back and it was the exact time of the expected pressure wave picked up by the official readings at the time. So I definitely noticed but figured it was just a general error, it was only after I checked the history did I realize it was probably the volcano !