Overview

• The National Oceanic and Atmospheric Administration’s forecast sets a Kp index of 5 for June 4, signifying a G1‐class storm that pushes auroras into lower latitudes.
• Tonight’s aurora could be visible in 15 U.S. states from Washington and Idaho to Maine, and across most Canadian provinces including southern Ontario.
• Last weekend’s rare G4 geomagnetic storm and the ongoing solar maximum, which peaked in 2024, have driven more frequent displays expected through early 2026.
• Ideal viewing is predicted between 10 p.m. and 2 a.m. in areas with minimal light pollution and an unobstructed northern horizon.
• Observers are advised to enable night mode on smartphones or use a wide-angle lens and tripod with an aperture below f/4 for clear photographs.