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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-18T19:36Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
Activity ID: 2026-03-18T19:36:00-CME-001 (version 2)
Note Keyword:
COL: Possible collision with previous CME
GAP: Data gap
OVR: Event partially overlaps with another CME
PRM: Prominence material (filamentary structures)
Source Signature Keyword:
FIL: Filament eruption
Morphology Keyword:
Note: CME first seen to the NNE in SOHO LASCO C2 starting around 2026-03-18T19:36Z. It is also seen to the NNE in SOHO LASCO C3 and GOES CCOR-1 but is covered by a real-time data gap in STEREO A COR2. A possible source of this CME is some movement in a filament near the NE limb best seen in GOES SUVI 304 starting around 2026-03-18T18:32Z. 
Version 1 submitted on 2026-03-19T01:29Z by Elizabeth Juelfs
Version 2 submitted on 2026-03-23T16:07Z 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 -90.0 71.0 276.0 S 34.0 2026-03-19T08:42Z Measurement based on source location near the NNE limb. Not modeled Elizabeth Juelfs on 2026-03-19T01:30Z



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