Researchers from Lancaster University have corrected the historical date of the first recorded railway disruption caused by space weather. Previously, the incident was incorrectly attributed to October 18, 1841, due to a publication error in the journal Nature in 1871.
By analyzing historical railway schedules, newspaper archives, and geomagnetic records, the team determined the actual date was October 18, 1848. On that evening, a strong geomagnetic disturbance and auroras were recorded in the UK and Europe, coinciding with a 16-minute train delay near Exeter.
The study identified an even earlier instance of space weather impact: in March 1847, operators on the Midland Railway reported spontaneous electrical currents in telegraph equipment during an aurora. This case is now considered the earliest confirmed event of its kind.
Geomagnetically induced currents can affect modern rail signaling systems, potentially causing false signal triggers. With tens of thousands of signaling circuits in the UK, major geomagnetic storms remain a recognized risk factor for current railway infrastructure.
