11:24On March 13, 1989, a powerful solar storm caused a complete shutdown of the Hydro-Québec power grid, leaving millions without electricity. The storm's intense geomagnetic activity triggered a chain reaction, knocking out seven static compensators and leading to widespread outages across Quebec. After nine hours, 17,500 megawatts—about 83% of full power—was restored. While the storm caused chaos on the grid, it also produced stunning auroras visible as far south as Florida.