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Solar Flare Causes Atlantic Blackout, Minor May-13 Storm

5/12/2026

37 4 Full Breakdown

Summary

Story summary

May 10 M5.7 solar flare from AR4436 caused a radio blackout over the Atlantic.
The flare launched a coronal mass ejection that should brush Earth early on May 13.
NOAA’s Space Weather Prediction Center and the U.K. Met Office forecast a minor G1 geomagnetic storm around May 13.
Because the CME is moving east of Earth, only a glancing impact is expected, far weaker than the May 2024 G5 storm.

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Story summary

May 10 M5.7 solar flare from AR4436 caused a radio blackout over the Atlantic.
The flare launched a coronal mass ejection that should brush Earth early on May 13.
NOAA’s Space Weather Prediction Center and the U.K. Met Office forecast a minor G1 geomagnetic storm around May 13.
Because the CME is moving east of Earth, only a glancing impact is expected, far weaker than the May 2024 G5 storm.