Severe Northern Lights Alert Issued for 23 U.S. States on June 4-5
Severe Northern Lights Alert Issued for 23 U.S. States on June 4-5
US · Published Jun 4, 2026
The NOAA Space Weather Prediction Center has upgraded its forecast for northern lights activity, warning of strong to severe geomagnetic storms on Thursday, June 4, and Friday, June
This heightened activity is due to multiple coronal mass ejections (CMEs) from the sun, which are expected to interact with Earth's magnetic field. CMEs are clouds of superheated gas and magnetic fields released during solar flares. The geomagnetic storm is forecasted to reach G3 (Strong) levels, with a possibility of isolated G4 (Severe) conditions. The best viewing opportunities will occur after dark in northern U.S. states, though an 82%-lit waning gibbous moon may interfere with visibility. The event could push auroras further south than usual, offering a rare chance for mid-latitude states to witness the phenomenon.

Why It's Important?

The geomagnetic storm could make the northern lights visible across a wide swath of the United States, including states as far south as Illinois, Indiana, and Pennsylvania, provided skies are clear and light pollution is minimal. However, the brightness of the moon and short nighttime hours near the June solstice may limit visibility. The storm's intensity could also pose risks to satellite operations, power grids, and communication systems, though no specific warnings have been issued for these sectors. Skywatchers in northern states like Washington, Minnesota, and Maine are likely to have the best viewing conditions.

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