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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-21T08:24Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-03-21T08:24:00-CME-001 (version 2)
Note Keyword:
Faint: Faint event; may affect type assignment
FF: Event fails/disappears before exiting COR2
OVR: Event partially overlaps with another CME
Source Signature Keyword:
OFL: Moving/Opening field lines
Morphology Keyword:
L: Loop
Note: CME faintly seen to the ENE in SOHO LASCO C2/C3 and GOES CCOR-1, and possibly also seen super faintly in STEREO A COR2. Possibly far-sided source could be indicated by moving field lines seen after 2026-03-21T08:00Z on/close to the E limb in GOES SUVI 284. 
Version 1 submitted on 2026-03-21T18:45Z by Anna Chulaki
Version 2 submitted on 2026-03-23T16:55Z by Mary Aronne
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 -88.0 9.0 491.0 S 16.0 2026-03-21T16:03Z Very speculative analysis using triangulation and based on the fitting of two very faint fronts in SOHO LASCO and STEREO A coronagraphs. 1: Result 1 (2.0 AU)
Anna Chulaki on 2026-03-21T18:47Z



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