Geomagnetic Storms: An underestimated and potentially high impact disruption October 7, 2019 Jean-Paul Rodrigue Probability of a Geomagnetic Storm with a Field Change Greater than 300 Nanoteslas per Minute (22-year cycle) Share this:LinkedInXFacebookReddit Post navigation Previous PostTransport Safety and Security (updated)Next PostTransportation and Disasters (updated)