Brain Post: Witness a Shock Wave as 17,930-Foot Popocatépetl Erupts TODAY The 17,930-Foot Popocatépetl volcano in Mexico erupted today at 1:23pm. The eruption was captured by a webcam and really shows a shock wave that rips out of the mountain. What’s truly amazing in this video is that you can actually watch the clouds around Popocatépeti shudder as the initial shock wave rocks the volcano. Volcanic shock waves can be ridiculously […] Brains SnowBrains | June 17, 2013 1 Comment