G2 – Moderate geomagnetic storm watch in effect for April 17 and 18

A G2 - Moderate geomagnetic storm watch is in effect for April 17 and 18, 2026, due to an incoming coronal hole high-speed stream expected to enhance solar wind conditions by late April 17. The event could cause minor operational impacts on high-latitude power systems, satellites, and HF radio communications, while increasing the chance of aurora sightings across northern U.S. states. Source