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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-24T03:53Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
Activity ID: 2026-03-24T03:53:00-CME-001 (version 1)
Note Keyword:
Faint: Faint event; may affect type assignment
FF: Event fails/disappears before exiting COR2
GAP: Data gap
Source Signature Keyword:
Morphology Keyword:
L: Loop
Note: CME first seen to the West by STEREO A COR2 beginning at 2026-03-24T03:53 following the end of a data gap which began at 2026-03-23T20:23Z. This CME is not visible in SOHO LASCO C2/C3 or GOES CCOR-1, as it is likely completely far sided with respect to the Sun-Earth line. This event is also quite faint in STERO A COR2 and is therefore only visible for a few frames. Due to the data gap in STEREO A and the far sided nature of the CME, no clear source is seen for this event. 
Version 1 submitted on 2026-03-24T12:32Z 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 Plane-of-sky NONE -19.0 317.0 S 43.0 2026-03-24T13:29Z STEREO A plane-of-sky using a longitude of W143.8 due to lack of visible source and usable coronagraph imagery to triangulate. Not modeled Melissa Kane on 2026-03-24T12:32Z



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