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‘Solar Winds’ Spur Geomagnetic Storm That May Affect Power

  • Geomagnetic storms can cause voltage corrections, false alarms
  • Space weather center lowered alert to “moderate” level storm
Tenaga Nasional Bhd. Msia.
Photographer: Goh Seng Chong/Bloomberg
Updated on

Charged particles flowing from the sun have touched off a strong geomagnetic storm across the Earth that can disrupt power grids, satellites and radio navigation systems.

Geomagnetic conditions increased early Tuesday before weakening by midday, according to the U.S. Space Weather Prediction Center. The event led the PJM Interconnection LLC, operator of the biggest U.S. power grid, and Midcontinent Independent System Operator, which manages high-voltage transmission lines across 15 U.S. states and one Canadian province, to issue warnings.