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NASA Warns of Intensifying Solar Activity Threatening Communications and Power Grids

An X2.7-class solar flare has already caused radio blackouts and power disruptions, with active sunspot AR4087 poised to unleash further impacts.

This image captured by NASA's Solar Dynamics Observatory shows an X2.7-rated solar flare erupting from the sun on May 14, 2025.
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Overview

  • A powerful X2.7-class solar flare erupted on May 14, causing R3-level radio blackouts across Europe, Asia, and the Middle East, and some power degradation in the eastern US.
  • Sunspot region AR4087, the source of the flare, is rotating into direct view of Earth, increasing the likelihood of additional solar activity in the coming days.
  • NASA warns that further flares could disrupt radio communications, navigation systems, and power grids, posing risks to satellites and astronauts.
  • Scientists are monitoring for potential coronal mass ejections (CMEs) that could amplify geomagnetic storm impacts; none have yet been confirmed as Earth-directed.
  • The heightened solar activity is expected to produce vivid auroras visible across several US states, including Alaska, Minnesota, and Maine.