@
SomeMichGuy The Carrington Event was the most powerful geomagnetic storm in recorded history, occurring in September 1859 when a massive solar flare and coronal mass ejection (CME) struck Earth. It caused spectacular auroras visible as far south as the Caribbean, shocked telegraph operators, and even set telegraph equipment on fire. A similar event today could cause widespread power outages, communication failures, and significant economic damage due to our reliance on modern technology.
What Happened
Solar Flare: On September 1, 1859, amateur astronomer Richard Carrington observed a bright flash of light on the Sun, the first recorded solar flare.
Coronal Mass Ejection (CME): This flare was followed by a CME, an expulsion of plasma and magnetic waves, which reached Earth about 17.5 hours later.
Geomagnetic Storm: The CME triggered the largest geomagnetic storm in recorded history, a G5-level event on the NOAA scale.
Effects in 1859
Auroras: Brilliant auroras were seen across the globe, even in tropical regions like the Caribbean and Central America.
Telegraph System Disruption: The powerful electrical currents caused telegraph machines to spark, shock operators, and even start fires.
Unplugged Telegraphs: Some telegraph lines continued to transmit signals even after their batteries were disconnected, demonstrating the immense power of the induced currents.
Impact Today
Technological Vulnerability: A Carrington-level event today could cripple our modern, interconnected world.
Power Grids: High-voltage electrical transformers could overheat, leading to widespread and long-term power outages.
Communications: Satellites, GPS, and global communication networks are vulnerable to damage and disruption.
Economic Consequences: The potential economic losses from such an event are estimated to be in the trillions of dollars.
Preparedness
While improvements have been made since the 1859 event, and systems are more resilient than in the past, a Carrington-level storm remains a significant threat.
Scientists at NOAA's Space Weather Prediction Center monitor solar activity and can issue warnings, but space weather is difficult to predict with certainty.