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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-07-31T21:24Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
Activity ID: 2026-07-31T21:24:00-CME-001 (version 2)
Source Location: N15E29
Active Region Number: 14498
Note Keyword:
Faint: Faint event; may affect type assignment
GAP: Data gap
OVR: Event partially overlaps with another CME
Source Signature Keyword:
OFL: Moving/Opening field lines
BR: Brightening
DIM: Dimming
Morphology Keyword:
O: Other
Note: Faint CME observed to the NE in SOHO LASCO C2, may be observed to the NE in GOES CCOR-1 but heavily obscured by overlapping far-sided CME: 2026-07-31T23:00Z and real-time data gaps. The source may be the cluster of AR 14498/14450, closer to AR 14498 as brightening near N15E29 surrounded by some weak dimming and field line movement in SDO AIA 193 starting around 2026-07-31T19:25Z. 
Version 1 submitted on 2026-08-01T01:56Z by Tony Iampietro
Version 2 submitted on 2026-08-01T14:50Z 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 -29.0 20.0 356.0 S 27.0 2026-08-01T06:52Z SOHO LASCO C2 only 3D analysis using the observed likely source longitude at E29. Front may be visible in GOES CCOR-1 but too muddled by far-sided CME: 2026-07-31T23:00Z to confirm. 1: Result 1 (2.0 AU)
Earth = 2026-08-04T14:00Z
Europa Clipper = 2026-08-05T16:00Z
OSIRIS-APEX = 2026-08-05T16:00Z
2026-08-01T01:54Z Tony Iampietro on 2026-08-01T01:58Z



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