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Interplanetary Shock (or CME Arrival)
Catalog: M2M_CATALOG
Location: Earth
Event Time: 2026-05-07T15:16Z ( ACE: MAG )

All Detecting Spacecrafts:

ACE: MAG

ACE: SWEPAM

Activity ID: 2026-05-07T15:16:00-IPS-001 (version 1)
Quality of ICME Signature: 2 (clear signatures)
Note: Characterized by an initial jump in B_total from 4.8nT to 9.4nT, rising over 10nT shortly after with B_z mostly neutral so far, turning northward at this entry. Speed increase from ~330 km/s to ~370 km/s, with a spike in temperature and density. The potential best candidate is the start of a CIR from a coronal hole high speed stream expected to become geoeffective on 2026-05-07, from a small, dark equatorial coronal hole which crossed the central meridian on 2026-05-04.

Version 1 submitted on 2026-05-07T15:51Z by Tony Iampietro
Version 2 submitted on 2026-05-08T02:27Z by Mattie Anastopulos
Version 3 submitted on 2026-05-09T12:35Z by Anna Chulaki

A Notification with ID 20260507-AL-003 was sent on 2026-05-07T15:54Z

All directly linked activities:

2026-05-08T04:48:00-HSS-001

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