Researchers Alarmed as GPS Readings Suddenly Veer Off by 33 Feet, Enough to Crash Self-Driving Cars

Key Points:

• In November last year, a severe solar storm, the strongest in over two decades, disrupted GPS systems across the continental US, causing positioning errors exceeding 33 feet and impacting industries reliant on precise navigation such as agriculture and autonomous transportation.
• The storm pushed the Aurora Oval southward, creating intense density gradients in the upper atmosphere that interfered with signal travel times, leading to significant GPS inaccuracies at mid-latitudes.
• Researchers emphasized the need for improved understanding and predictive modeling of space weather to mitigate disruptions to radio frequency applications during such events.
• Although the November storm occurred after the farming season, a similar superstorm in May 2024 caused an estimated half a billion dollars in agricultural damages, underscoring the potential economic risks of solar storms during critical periods.
• The study highlights the broader impact of space weather on human activities and the importance of coordinated scientific observations to enhance preparedness and reduce future disruptions.