The National Oceanic and Atmospheric Administration (NOAA) has issued a G4 (Severe) Geomagnetic Storm Watch for June 2, 2025, following a significant coronal mass ejection (CME) from the sun on May 30. The CME is anticipated to reach Earth by June 1, potentially causing geomagnetic disturbances escalating from G3 (Strong) to G4 (Severe) storm levels. The most intense geomagnetic conditions are expected between 8 p.m. and 11 p.m. EDT on June 1.
This solar storm could lead to visible auroras across parts of the United States, with the northern lights potentially observable as far south as Alabama and Northern California. NOAA advises that the true impact will only be known once the CME reaches solar wind monitoring spacecraft about 1 million miles from Earth.
The geomagnetic storm is a result of a powerful CME released by the sun on May 30, associated with sunspot region AR4100. Such events can disrupt satellite operations, communication systems, and power grids. Space weather experts are closely monitoring the situation, as the storm provides valuable data for scientific research.
Residents in areas with clear skies are advised to look north between 10 p.m. and 2 a.m. local time for the best chance to witness the aurora borealis. Even if the aurora is not visible to the naked eye, smartphone cameras might capture the display.
NOAA’s Space Weather Prediction Center continues to monitor the storm’s progression and will provide updates as more information becomes available. For real-time updates and more information, visit NOAA’s official website.