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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-20T11:24Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-03-20T11:24:00-CME-001 (version 1)
Note Keyword:
COL: Possible collision with previous CME
Source Signature Keyword:
OFL: Moving/Opening field lines
Morphology Keyword:
Note: CME first seen to the NE in SOHO LASCO C2 starting at 2026-03-20T11:24Z. It is also seen to the NE in SOHO LASCO C3, to the NNE in STEREO A COR2. It is also visible to the NE in GOES CCOR-1 but is partially obscured by the pylon. The source is most likely an eruption seen near the NE limb starting around 2026-03-20T10:20Z best seen in GOES SUVI 195 as an opening of field lines. 
Version 1 submitted on 2026-03-20T16:26Z 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 -112.0 30.0 318.0 S 27.0 2026-03-20T22:52Z Measurement based on best fit between SOHO LASCO C2/C3 and STEREO A COR2 and on visible source location near NE limb. 1: Result 1 (2.0 AU)
Elizabeth Juelfs on 2026-03-20T16:27Z



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