The Great Québec Blackout - It’s Only A Matter Of Time Before Earth Is Hit By A Major Solar Storm
They call it “the day the sun brought darkness.” On March 13, 1989, a powerful coronal mass ejection (CME) hit Earth’s magnetic field. Ninety seconds later, the Hydro-Québec power grid failed. During the 9 hour blackout that followed, millions of Quebecois found themselves with no light or heat, wondering what was going on?
“It was the biggest geomagnetic storm of the Space Age,” says Dr. David Boteler, head of the Space Weather Group at Natural Resources Canada.
It seems hard to believe now, but in 1989 few people realized solar storms could bring down power grids. The warning bells had been ringing for more than a century, though. In Sept. 1859, a similar CME hit Earth’s magnetic field–the infamous “Carrington Event“–sparking a storm twice as strong as March 1989. Electrical currents surged through Victorian-era telegraph wires, in some cases causing sparks and setting telegraph offices on fire. These were the same kind of currents that would bring down Hydro-Québec.
The sunspot that hurled the CMEs toward Earth, region 5395, was one of the most active sunspot groups ever observed. In the days around the Quebec blackout it produced more than a dozen M- and X-class solar flares. Two of the explosions (an X4.5 on March 10th and an M7.3 on March 12th) targeted Earth with CMEs.
“The first CME cleared a path for the second CME, allowing it to strike with unusual force,” says Boteler. “The lights in Québec went out just minutes after it arrived.”
The next Québec-level storm is just a matter of time. In fact, we could be overdue.
Thanks for watching!
#majorsolarstorm #Quebecblackout #CME
Images credit: NASA’s Goddard Space Flight Center
Music credit: Lightless Dawn by Kevin MacLeod is licensed under a Creative Commons Attribution licence ()
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