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Interplanetary Shock (or CME Arrival)
Catalog: M2M_CATALOG
Location: Earth
Event Time: 2026-05-04T04:10Z ( ACE: SWEPAM )

All Detecting Spacecrafts:

ACE: SWEPAM

ACE: MAG

DSCOVR: PLASMAG

Activity ID: 2026-05-04T04:10:00-IPS-001 (version 3)
Quality of ICME Signature: 1 (lacks some signatures)
Note: CME arrival characterized by rapid magnetic field enhancement from 4 to 8 nT near 2026-05-04T04:10Z, a slow gradual rise to above 10 nT, and separation in magnetic field components after 2026-05-04T15:00Z until approximately 2026-05-06T04:00Z. Enhancements in solar wind density and small increases and decreases in velocity and temperature, respectively, were also observed. May be associated with the arrival of CMEs 2026-04-30T12:38Z and/or 2026-04-30T18:24Z.

Version 1 submitted on 2026-05-04T18:50Z by Chris Stubenrauch
Version 2 submitted on 2026-05-05T16:37Z by Mary Aronne
Version 3 submitted on 2026-05-06T11:17Z by Mary Aronne

No Notification has been sent for this activity yet.

All directly linked activities:

2026-04-30T12:38:00-CME-001

2026-04-30T18:24:00-CME-001

2026-05-04T18:00:00-GST-001
NOAA Kp: 6.33 (2026-05-04T21:00Z)

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