Tag: k_index

NOAA Warns of G3 Geomagnetic Storm

5 Jun 2026 1:18 p.m. · Source: NOAA

NOAA has issued a G3-level geomagnetic storm warning, expecting a K-index of 7 or greater. The warning is valid for June 5, 2026, from 1714 UTC to 2359 UTC, indicating potential impacts on Earth's magnetic field.

Science & Technology Weather Astronomy and Space Environment General Weather NOAA Geomagnetic Storm Space Weather K-index G3 Storm Warning Earth's Magnetic Field Solar Flares