NOAA SWPC / CAPTURE HISTORY
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Latest captured source record. This is an archive, not a current warning service.
Open the detailed event record ↗- First tracked
- 2026-10-11 19:28:46.921Z
- Last seen in a feed
- 2026-10-11 21:43:42.780Z
- Source classification
- Bulletin · Published bulletin
EXTENDED WARNING: Geomagnetic K-index of 4 expected · Extension to Serial Number: 5431 · Valid From: 2026 Oct 09 0128 UTC · Now Valid Until: 2026 Oct 11 1200 UTC · Warning Condition: Persistence · NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
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newly tracked · Captured 2026-10-11 19:28:46.921Z
EXTENDED WARNING: Geomagnetic K-index of 4 expected
EXTENDED WARNING: Geomagnetic K-index of 4 expected · Extension to Serial Number: 5431 · Valid From: 2026 Oct 09 0128 UTC · Now Valid Until: 2026 Oct 11 1200 UTC · Warning Condition: Persistence · NOAA Space Weather Scale descriptions can be found at · www.swpc.noaa.gov/noaa-scales-explanation
Source issued/updated 2026-10-11T04:57:50.150Z · Published bulletin
Source for this capture ↗