Overview

• NOAA’s Space Weather Prediction Center forecast a geomagnetic Kp index of 4 for Wednesday night, down from earlier warnings of minor to moderate storms.
• The revised outlook confines auroral visibility to about ten northern U.S. states, with Alaska and parts of northern New England most likely to see displays.
• Late Tuesday’s potential G2 storm reached a K-index of 6 before easing faster than expected, reducing the aurora’s southern reach.
• A high-speed solar wind stream from a negatively polarized coronal hole remains the primary driver of this week’s geomagnetic disturbances.
• Observers should seek unobstructed, north-facing dark skies between 10 p.m. and 2 a.m. local time and follow NOAA’s forecast updates for any changes.