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Interplanetary Shock (or CME Arrival)
Catalog: M2M_CATALOG
Location: Earth
Event Time: 2026-09-06T20:40Z ( SOLAR-1: MAG )

All Detecting Spacecrafts:

SOLAR-1: MAG

ACE: SWEPAM

ACE: MAG

SOLAR-1: SWiPS

IMAP: MAG

IMAP: SWAPI

Activity ID: 2026-09-06T20:40:00-IPS-001 (version 2)
Quality of ICME Signature: -1 (unspecified)
Note: Characterized by an amplification of magnetic field components with Btotal increasing from 6nT at 2026-09-06T20:40Z to 17nT at 2026-09-07T10:41Z. An increase in density is observed alongside the amplification of magnetic field components, with density increasing from ~4 p/cc at 2026-09-06T20:40Z to 27 p/cc at 2026-09-07T10:36Z. This interplanetary shock is likely associated with the arrival of a corotating interaction region preceding a coronal hole high speed stream. The high speed stream signature is observed starting around 2026-09-07T06:06Z, characterized by an increase in velocity, from 338 km/s at 2026-09-07T06:06Z to ~500 km/s at 2026-09-06T12:02Z, and an increase in temperature, from ~46,000 K at 2026-09-07T06:06Z to ~480,000 K at 2026-09-07T12:03Z. This signature is still developing and analysis is ongoing.

Version 1 submitted on 2026-09-07T12:15Z by Mattie Anastopulos
Version 2 submitted on 2026-09-07T12:17Z by Mattie Anastopulos
Version 3 submitted on 2026-09-08T18:53Z by Tony Iampietro
Version 4 submitted on 2026-09-08T19:15Z by Tony Iampietro

A Notification with ID 20260907-AL-001 was sent on 2026-09-07T12:26Z

All directly linked activities:

2026-09-02T10:24:00-CME-001

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