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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2025-07-25T18:23Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
Activity ID: 2025-07-25T18:23:00-CME-001 (version 3)
Source Location: S09E25
Note Keyword:
Source Signature Keyword:
OFL: Moving/Opening field lines
BR: Brightening
DIM: Dimming
EUVW: EUV Wave
Morphology Keyword:
Note: Relatively fast, narrow CME seen to the southeast only in STEREO A COR2A starting around 2025-07-25T18:23Z and not seen in SOHO LASCO C2/C3 or GOES19 CCOR-1, likely associated with a minor eruption northwest of Active Region 4154 near S09E25; the signature is seen a brightening loop with larger overarching dimming signature in SDO AIA 193, locally separating magnetic field lines in SDO AIA 171, 131, and 304, and in GOES SUVI 284. An omnidirectional, cone-shaped EUV wave is seen emanating from the source. The CME is seen quickly in three frames of STEREO A COR2 before rapidly becoming more diffuse and not measurable before exiting the coronagraph field of view. 
Version 1 submitted on 2025-07-26T00:25Z by Chris Stubenrauch
Version 2 submitted on 2025-07-29T15:38Z by Mary Aronne
Version 3 submitted on 2025-07-29T15:38Z by Mary Aronne
A Notification with ID 20250726-AL-001 was sent on 2025-07-26T01:05Z

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 -25.0 -9.0 938.0 C 11.0 2025-07-25T21:50Z Uncertain measurement/simulation with just one spacecraft (STEREO A) using three frames, using knowledge of the source location. 1: Result 1 (2.0 AU)
Earth = 2025-07-29T00:00Z (PE: 1.0 h)
BepiColombo = 2025-07-26T20:00Z
2025-07-26T00:27Z Chris Stubenrauch on 2025-07-26T00:27Z



All directly linked activities:
2025-07-28T22:58:00-IPS-001
Location: Earth


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