List of Presto solar storms alerts

From the alerts sent by SIDC (Solar Influences Data analysis Center).

Last alert:

Issued on 2025 Dec 11 1004 UTC

Global geomagnetic conditions escalated to moderate storm levels (NOAA Kp 6+ ) between 21:00 UTC on December 10 and 00:00 UTC on December 11 and are currently at quiet levels (NOAA Kp 2 + ). Locally, geomagnetic conditions reached moderate storm levels (K BEL 6) between 23:00 UTC on December 10 and 01:00 UTC on December 11. The geomagnetic storm was likely the result of a glancing blow arrival associated with the Coronal Mass Ejection (SIDC CME 607) observed on December 8. An increase in solar wind parameters was observed around 20:00 UTC on December 10. Solar wind speeds rose from approximately 400 km/s to 450 km/s, and the interplanetary magnetic field strength increased from 2 nT to 18 nT. From 20:00 UTC on December 10 to 02:00 UTC on December 11, there was a prolonged interval of negative Bz, with values reaching a minimum of –16 nT. Further minor to moderate geomagnetic storm conditions remain possible in the coming hours.

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This Gemini mirror

Maintained by Stéphane Bortzmeyer stephane+gemini@bortzmeyer.org from the SIDC data.

SIDC - Solar Influences Data analysis Center - RWC Belgium

Royal Observatory of Belgium

E-mail sidc-support@oma.be