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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-07-28T00:12Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
STEREO A: SECCHI/COR2
Activity ID: 2026-07-28T00:12:00-CME-001 (version 4)
Source Location: S04W16
Active Region Number: 14494
Note Keyword:
Source Signature Keyword:
FLR: Flare
FIL: Filament eruption
Morphology Keyword:
Note: This CME is visible to the southwest in SOHO LASCO C2 and STEREO A COR2 imagery. Not clearly visible in GOES CCOR-1 imagery. The source is a filament eruption from Active Region 14494 (centered near S04W16) starting around 2026-07-27T23:45Z as seen in SDO AIA 131/171/193/304, GOES SUVI 131/171/195/294/304, and STEREO A EUVI 195 imagery. This eruption is preceded by a C3.3 flare starting at 2026-07-27T22:44Z. 
Version 1 submitted on 2026-07-28T01:46Z by Mattie Anastopulos
Version 2 submitted on 2026-07-28T11:22Z by Mary Aronne
Version 3 submitted on 2026-07-28T15:08Z by Mary Aronne
Version 4 submitted on 2026-07-28T15:11Z 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 24.0 2.0 363.0 S 31.0 2026-07-28T09:14Z Measurement based on the approximate source location and best fit between SOHO LASCO C2 and STEREO A COR2 imagery. 1: Result 1 (2.0 AU)
Earth = 2026-07-31T10:00Z
BepiColombo = 2026-07-29T08:28Z
Parker Solar Probe = 2026-07-30T09:00Z
Juice = 2026-08-01T13:00Z
OSIRIS-APEX = 2026-08-01T12:00Z
STEREO A = 2026-07-31T08:00Z
2026-07-28T01:45Z Mary Aronne on 2026-07-28T11:22Z



All directly linked activities:
2026-07-27T22:33:00-FLR-001
FLR Type: C3.3


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