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Interplanetary Shock (or CME Arrival)
Catalog: M2M_CATALOG
Location: Earth
Event Time: 2025-09-14T13:57Z ( ACE: SWEPAM )

All Detecting Spacecrafts:

ACE: SWEPAM

ACE: MAG

Activity ID: 2025-09-14T13:57:00-IPS-001 (version 1)
Quality of ICME Signature: -1 (unspecified)
Note: Characterized by a sharp fluctuation in magnetic field components (Bt: 5.93nT to 9.66nT , Bx: 2.73nT to -5.46nT , By: 3.53nT to 7.49nT , Bz: -5.15nT to -0.64nT) followed by a more gradual rise in components leading to a further elevation (Bt: to 15.47nT , Bx: to 12.82nT , By: 12.82nT , Bz: 12.85nT). This fluctuation in magnetic field parameters is accompanied by increases in temperature (approx. 27kK to approx. 133kK), density (approx. 5.9p/cc to approx. 26.07p/cc) and speed (approx. 327km/s to 384km/s). This IPS may be related to a CIR ahead of a coronal hole high speed stream, the arrival of CME: 2025-09-11T08:53Z, or a combination of the two.

Version 1 submitted on 2025-09-14T18:37Z by Melissa Kane

A Notification with ID 20250914-AL-002 was sent on 2025-09-14T18:42Z

All directly linked activities:

2025-09-14T19:10:00-HSS-001

2025-09-15T00:00:00-GST-001
NOAA Kp: 6.67 (2025-09-15T03:00Z)

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