G1 – Minor Geomagnetic Storm Alert issued on August 9
A G1 – Minor Geomagnetic Storm Alert was issued for August 9, 2025, valid for the synoptic period 06:00–09:00 UTC.
Geomagnetic storms
G1 – Minor Geomagnetic Storm Alert issued on August 9, 2025
A G1 – Minor Geomagnetic Storm Alert was issued at 04:59 UTC on August 9, 2025. The alert is active for the synoptic period 03:00–06:00 UTC.
G1 – Minor Geomagnetic Storm Alert issued on August 9, 2025
A G1 – Minor Geomagnetic Storm Alert was issued on August 9, 2025, valid for the synoptic period 00:00–03:00 UTC.
G1 – Minor Geomagnetic Storm Alert issued on August 8
A G1 – Minor Geomagnetic Storm Alert was issued on August 8, 2025. The alert is valid for the synoptic period 18:00 UTC to 21:00 UTC.
G1 – Minor Geomagnetic Storm Alert issued on August 8, 2025
A G1 – Minor Geomagnetic Storm Alert was issued on August 8, 2025. The alert is based on a geomagnetic K-index of 5 at 14:59 UTC.
ALERT: Geomagnetic K-index of 4 Alert issued on August 8
An ALERT: Geomagnetic K-index of 4 was issued on August 8, 2025, valid from 12:00 to 15:00 UTC.
G2 – Moderate Geomagnetic Storm Watch issued for August 8, 2025
A G2 – Moderate Geomagnetic Storm Watch is in effect for August 8, 2025. The Watch is valid for the UTC day.
ALERT: Geomagnetic K-index of 4 Alert issued on August 3
A Geomagnetic K-index of 4 Alert was issued for August 3, 2025, with the threshold reached at 19:55 UTC and valid for the 1800–2100 UTC period.
Alert – Geomagnetic K-index of 4 Alert issued on July 26
A Geomagnetic K-index of 4 Alert was issued on July 26, 2025 at 17:53 UTC, valid for the synoptic period 15:00–18:00 UTC.
Alert – Geomagnetic K-index of 4 issued on July 24, 2025
A Geomagnetic K-index of 4 Alert was issued on July 24, 2025, valid for the synoptic period from 09:00 UTC to 12:00 UTC.
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