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Geomagnetic Storm Watch: Northern Lights May Be Visible Across 18 U.S. States Tonight

A G2-class solar storm triggered by recent coronal mass ejections could produce auroras visible far beyond usual polar regions, with real-time satellite data offering updates on timing and scope.

Image
Pictured: Stock image of the Aurora Borealis over Fairbanks, Alaska.
Aurora borealis, or the northern lights, are seen Thursday, Oct. 10, 2024, at F.W. Kent Park in Oxford, Iowa.

Overview

  • Two coronal mass ejections from a solar double eruption on April 12-13 are expected to reach Earth on April 16, causing a G2-level geomagnetic storm.
  • The northern lights could be visible across up to 18 U.S. states, including Washington, Montana, Michigan, and New York, depending on local weather and light pollution conditions.
  • The storm's Kp index is forecast to peak at 6, with auroral activity most likely between 10 p.m. and 2 a.m. local time tonight and early Wednesday morning.
  • Real-time monitoring by NASA's DSCOVR and ACE satellites will provide approximately 30 minutes' notice before auroral activity peaks in specific areas.
  • Aurora visibility is part of heightened solar activity during Solar Cycle 25, which has increased the frequency and intensity of geomagnetic events.