RETAINED OPEN-SOURCE SIGNALS

History, without losing context.

Search and explore the rolling 30-day signal archive. Historical presence shows what sources reported at the time; it is not independent verification.

876signals in August30-DAY HISTORICAL INDEX
Clear
A2 / HISTORICAL WIRE

August 28, 2026

36 results
space / P4Europe

WARNING: Geomagnetic K-index of 5 expected

Space Weather Message Code: WARK05 Serial Number: 2261 Issue Time: 2026 Aug 28 2040 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2026 Aug 28 2039 UTC Valid To: 2026 Aug 29 0600 UTC Warning Conditions: Onset Noaa Scale: G1 - Minor Comment: NOAA Scale: G1 - Minor NOAA Space Weather Scale…

space / P4Europe

ALERT: Geomagnetic K-index of 4

Space Weather Message Code: ALTK04 Serial Number: 2681 Issue Time: 2026 Aug 28 1502 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2026 Aug 28 1500 UTC Synoptic Period: 1500-1800 Active Warning: YES Comment: NOAA Space Weather Scale descriptions can be found at www.swpc.noaa.gov/noaa-scales-…