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Interplanetary Shock (or CME Arrival)
Catalog: M2M_CATALOG Location: Earth Event Time: 2025-11-12T18:52Z ( ACE: MAG ) Quality of ICME Signature: 2 (clear signatures) Note: Characterized by an amplification of magnetic field components with Btotal increasing from 19nT at 2025-11-12T18:52Z to about 40nT at 2025-11-12T19:00Z. The magnetic field parameters were previously enhanced due to the interplanetary shock starting at 2025-11-11T22:11Z. An increase in solar wind speed from about 580 km/s to 820 km/s was observed starting at about 2025-11-12T19:45Z after a brief period of unreliably low solar wind speed data which had occurred during the initial shock arrival. An increase in temperature was seen starting at 2025-11-12T19:45Z from about 71,000 K to about 764,000 K. A significant increase in temperature was observed starting at 2025-11-12T21:55Z, which may have been erroneous or unreliable data. A corresponding sudden increase in density was observed at 2025-11-12T19:41Z from about 4 p/cc to a peak value of 24 p/cc at 2025-11-12T19:49Z. Version 1 submitted on 2025-11-12T19:23Z by Mattie Anastopulos Version 2 submitted on 2025-11-13T20:47Z by Hannah HermannA Notification with ID 20251112-AL-007 was sent on 2025-11-12T19:30Z |
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