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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-21T05:12Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
GOES: CCOR-1
Activity ID: 2026-03-21T05:12:00-CME-001 (version 2)
Note Keyword:
Faint: Faint event; may affect type assignment
OVR: Event partially overlaps with another CME
Source Signature Keyword:
Morphology Keyword:
O: Other
Note: Faint CME with a fuzzy front seen to the ENE in SOHO LASCO and GOES CCOR-1 and possibly seen very faintly in STEREO A COR2, but the front in COR2A is too fuzzy to use in analysis. No clear source has been found for this event in EUV imagery. 
Version 1 submitted on 2026-03-21T18:56Z by Anna Chulaki
Version 2 submitted on 2026-03-21T19:02Z by Anna Chulaki
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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 Plane-of-sky NONE 6.0 459.0 S 14.0 2026-03-21T13:17Z The CME is seen clearly in SOHO LASCO only, with the potential front too faint/fuzzy in STEREO A COR2. No clear source is seen in coronagraphs. Only plane-of-sky analysis is definitive. Not modeled Tony Iampietro on 2026-03-21T23:49Z



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