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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2025-08-31T04:08Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
STEREO A: SECCHI/COR2
Activity ID: 2025-08-31T04:08:00-CME-001 (version 1)
Note Keyword:
Faint: Faint event; may affect type assignment
FF: Event fails/disappears before exiting COR2
Source Signature Keyword:
BR: Brightening
Morphology Keyword:
Note: CME first seen to the NE in SOHO LASCO C2 starting around 2025-08-31T04:08Z. This CME is also seen for a few frames in STEREO A COR2. This CME does appear in SOHO LASCO C3 and is obscured by Earth-shine in GOES CCOR-1. The source of this CME is possibly some minor brightening from between AR 14205 and AR 14206 best seen in SDO AIA 304 beginning as early as 2025-08-31T02:00Z. 
Version 1 submitted on 2025-08-31T17:33Z by Elizabeth Juelfs
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 -44.0 11.0 427.0 S 10.0 2025-08-31T12:12Z Low confidence, best-fit measurement based on imagery from SOHO LASCO C2 and STEREO A COR2 as well as possible visible source. 1: Result 1 (2.0 AU)
2: Result 2 (5.5 AU)
2025-08-31T17:37Z Elizabeth Juelfs on 2025-08-31T17:37Z



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