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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-06-04T06:23Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
SOHO: LASCO/C3
GOES: CCOR-1
Activity ID: 2026-06-04T06:23:00-CME-001 (version 1)
Note Keyword:
DFL: Likely deflection of the event within the FOV
Faint: Faint event; may affect type assignment
GAP: Data gap
PRM: Prominence material (filamentary structures)
Source Signature Keyword:
FIL: Filament eruption
Morphology Keyword:
Note: Faint, narrow CME first seen to the SSW in STEREO A COR2 beginning around 2026-06-04T06:23Z. It is also seen to the SSW in SOHO LASCO C3 and GOES CCOR-1. The CME is mostly missed by SOHO LASCO C2 because the CME start time is covered by a short data gap. The source of this CME is likely an eruption with southward-directed ejecta seen near the W limb in GOES SUVI 304 beginning around 2026-06-04T04:40Z. 
Version 1 submitted on 2026-06-04T13:29Z by Elizabeth Juelfs
No Notification has been sent for this activity yet.

The List of CME Analysis already entered:
Event Type Catalog
Measurement TypeCME measurement type: Leading Edge (LE), Shock Front (SH), Right Hand Boundary (RHB), Left Hand Boundary (LHB), Black/White Boundary (BW), Prominence Core (COR), Disconnection Front (DIS), Trailing Edge (TE).
Prime?"primary flag" which is either True or False. If there are multiple CME analysis entries for a single CME, this flag would indicate which analysis is considered most accurate per measurement type. This is a helpful flag if you would like to download only one most accurate CME analysis per CME per Measurement Type
 Technique Long Lat Speed Type Half Width Time 21.5 Note WSA-ENLIL+Cone Result(s) Measured On Submitted By
CME Analysis M2M_CATALOG LE true SWPC_CAT 126.0 -59.0 548.0 C 16.0 2026-06-04T12:42Z Measurement based on best fit among SOHO LASCO C3, GOES CCOR-1, and STEREO A COR2. Not modeled Elizabeth Juelfs on 2026-06-04T13:31Z



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