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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-18T03:00Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
STEREO A: SECCHI/COR2
Activity ID: 2026-03-18T03:00:00-CME-001 (version 1)
Note Keyword:
Faint: Faint event; may affect type assignment
FF: Event fails/disappears before exiting COR2
Source Signature Keyword:
Morphology Keyword:
J: Jet
Note: CME first seen to the SE by SOHO LASCO C2 beginning at 2026-03-18T03:00Z, as well as faintly by STEREO A COR2 in later frames. This event fades before exiting the field of view in SOHO LASCO C2 and is therefore not clearly seen in SOHO LASCO C3 or GOES CCOR-1. There is no clear source seen for this event, but preliminary fits suggest an origin from the Southeast quadrant of the disk. 
Version 1 submitted on 2026-03-18T15:36Z by Melissa Kane
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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 SWPC_CAT -39.0 -35.0 311.0 S 23.0 2026-03-18T13:51Z Measurement based on best fit between SOHO LASCO C2 and GOES CCOR-1. Not modeled Melissa Kane on 2026-03-18T15:37Z



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