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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2025-09-21T02:48Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
STEREO A: SECCHI/COR2
Activity ID: 2025-09-21T02:48:00-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:
J: Jet
Note: Narrow, diffuse CME first seen to the East in SOHO LASCO C2 beginning at 2025-09-21T02:48Z, as well as faintly by STEREO A COR2 in later frames. This CME is only visible for a few frames in STEREO A COR2 due to a reduced, 1-hour cadence, and is not visible in SOHO LASCO C3 or GOES CCOR-1 due to faintness. There is no clear source seen for this event. 
Version 1 submitted on 2025-09-21T13:28Z by Melissa Kane
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 Plane-of-sky NONE -1.0 405.0 S 10.0 2025-09-21T12:35Z Plane-of-sky measurement due to uncertain source location and lack of available coronagraph imagery to triangulate. Not modeled Melissa Kane on 2025-09-21T13:29Z



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