Space weather / EVENT RECORD

ALERT: Geomagnetic K-index of 5

NOAA SWPC · Every measurement below belongs to the selected record.

Bulletin issued

2026-10-04 11:23:41.163Z

Source update / publication

2026-10-04 11:23:41.163Z

ALERT: Geomagnetic K-index of 5 · Threshold Reached: 2026 Oct 04 1122 UTC · Synoptic Period: 0900-1200 · Active Warning: YES · Noaa Scale: G1 - Minor · Comment: · NOAA Scale: G1 - Minor

This is a source-linked archive. Source measurements and assessments can change. An archived bulletin is not evidence that a warning is currently active.

In the daily journal

SOURCE ID swpc:K05A:2026-10-04T11:23:41.163Z