Geomagnetic storms

A K-index 4 – Geomagnetic Storm Alert was issued on May 28, 2026 and is active for the synoptic period 1500–1800 UTC.

A Geomagnetic K-index of 4 Alert was issued at 00:01 UTC on May 27, 2026. The Alert is active following threshold reached at 23:59 UTC May 26.

A Geomagnetic K-index of 4 Alert was issued on May 19, 2026, valid from 06:00 UTC to 09:00 UTC. Weak power grid fluctuations may occur.

A G1 – Minor Geomagnetic Storm Alert was issued on May 16, 2026 after the K-index reached 5 at 17:59 UTC.

A G1 – Minor Geomagnetic Storm Alert was issued for May 16, 2026. Threshold was reached at 08:59 UTC during the 0600-0900 UTC period.

A G1 – Minor Geomagnetic Storm Alert was issued for May 16, 2026. The threshold was reached at 05:54 UTC and the alert is currently active.

A G2 – Moderate Geomagnetic Storm Alert was issued for May 15, 2026. The alert is active from 21:00 UTC to 24:00 UTC.

A G1 – Minor Geomagnetic Storm Alert was issued on May 15, 2026. The Alert is active for the synoptic period 15:00–18:00 UTC.