A solar storm that struck Earth on November 11, 2025, triggered severe geomagnetic disruptions and caused global navigation satellite systems to suffer positioning errors of more than 30 feet, according to a study published in Geophysical Research Letters. Researchers combined aurora-camera observations with ground-based GPS receiver networks across the U.S. and Canada to measure the widespread technological fallout.
How the November 2025 Solar Storm Impacted GPS Networks
During the peak of the six-hour geomagnetic disturbance, scientists observed high-energy electrons traveling down Earth’s magnetic field lines and colliding with upper atmosphere gases across a wide range of latitudes. According to the study, strong signal fluctuations stretched almost entirely from the West Coast to the East Coast of the U.S. and reached as far south as Florida. These irregularities caused satellite signals to fluctuate for hours and threw off GPS positioning by more than 30 feet, or 10 meters.
Risks to Precision Agriculture and Autonomous Vehicles
Positioning errors of this magnitude pose direct operational risks to precision agriculture equipment and self-driving cars, according to the researchers. The disruption threatens farming technology such as GPS-equipped tractors used during planting and harvesting seasons. A previous severe geomagnetic storm in May 2024 struck during the U.S. farming season and generated more than $500 million in damages across the Midwest, as reported by Space.com. “Had the November superstorm occurred during the farming season in the American sector, it could have caused significant economic losses for the American farming industry,” the study’s authors wrote.
Did you know? Solar storms are driven by the Sun’s 11-year activity cycle. While scientists can predict the general probability of eruptions during a solar maximum, forecasting the exact timing and magnitude of individual solar flares remains extremely difficult.
Improving Space Weather Prediction Models
Researchers are developing new tools to forecast space weather events faster and more accurately to protect critical infrastructure. “The results underscore the importance of accurate understanding of various space weather phenomena to enhance our predictive capabilities through coordinated observations and physics-based modeling and ultimately reducing disruptions to [radio frequency] applications during space weather events,” the researchers noted in the paper.
Frequently Asked Questions
What caused the GPS disruptions on November 11, 2025?
The disruptions were caused by a severe geomagnetic storm triggered by a series of solar flares that unleashed high-energy electrons into Earth’s upper atmosphere, according to research published in Geophysical Research Letters.
How large were the GPS positioning errors during the storm?
Ground-based GPS receiver networks measured positioning errors exceeding 30 feet (10 meters) across large portions of the United States, alongside hours of fluctuating satellite signals.
Could this solar storm affect self-driving cars?
Yes, researchers noted that the GPS disruptions were strong enough to veer off autonomous vehicles that rely on high-precision satellite navigation.
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