Tag: g3

NOAA Cancels G3 Geomagnetic Storm Warning Due to Date Error

4 Jul 2026 8:28 p.m. · Source: NOAA

NOAA has canceled a G3-level geomagnetic storm warning (K-index 7 or greater) due to an error in the original alert's expiration date. The warning was intended to end on July 4th.

Science & Technology Weather Astronomy and Space General Weather NOAA Space Weather Geomagnetic Storm Warning Cancellation K-index G3 Solar Flares