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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-07-20T16:48Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-07-20T16:48:00-CME-001 (version 2)
Note Keyword:
Faint: Faint event; may affect type assignment
OVR: Event partially overlaps with another CME
Source Signature Keyword:
OFL: Moving/Opening field lines
Morphology Keyword:
O: Other
Note: Faint CME observed to the SW in SOHO LASCO C2/C3, GOES CCOR-1, and STEREO A COR2, following bright CME: 2026-07-20T13:26Z. The source for this CME is not very clear in STEREO A EUV imagery, but may be a small moving of field lines seen in SDO AIA 171 over the SW limb starting around 2026-07-20T15:05Z. 
Version 1 submitted on 2026-07-21T01:51Z by Tony Iampietro
Version 2 submitted on 2026-07-21T20:25Z 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 107.0 -39.0 631.0 C 10.0 2026-07-20T22:34Z Triangulation between SOHO LASCO C2/C3 and STEREO A COR2. Not modeled 2026-07-21T01:33Z Tony Iampietro on 2026-07-21T01:51Z



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