The pressure graph shows 6 peaks of the wave (image: @EIlyinskaya/twitter)
A third pass of the atmospheric pressure wave around the globe was recorded by the Icelandic Meteorological Office (IMO).
An attached pressure diagram depicts 6 pressure peaks rather than 3 because the wave arrives twice, both from N-NW and from S-SE with 10-hours delay between the peaks as informed Dr. Evgenia Ilyinskaya, the researcher of Leeds University.