Space weather / EVENT RECORD

EXTENDED WARNING: Geomagnetic K-index of 5 expected

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

Bulletin issued

2026-10-04 18:50:12.297Z

Source update / publication

2026-10-04 18:50:12.297Z

EXTENDED WARNING: Geomagnetic K-index of 5 expected · Extension to Serial Number: 2267 · Valid From: 2026 Oct 04 1110 UTC · Now Valid Until: 2026 Oct 05 0300 UTC · Warning Condition: Persistence · Extended with issuance of G2 warning. · 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:K05W:2026-10-04T18:50:12.297Z