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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-08-04T11:23Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-08-04T11:23:00-CME-001 (version 1)
Note Keyword:
Source Signature Keyword:
DIM: Dimming
Morphology Keyword:
Note: CME first seen to the SE in STEREO A COR2. The CME is also seen in GOES CCOR-1 starting around 2026-08-04T14:00Z. The potential source is not clear, but may be a faint region of dimming seen in the SE of SDO AIA 193 imagery, centered around S40E30, between 2026-08-04T06:00Z-09:00Z. Moving/opening field lines are also visible off the NE limb in SDO AIA 171 in ISWA, GOES SUVI 284, and STEREO A EUV 195 imagery. 
Version 1 submitted on 2026-08-04T16:44Z by Mary Aronne
A Notification with ID 20260804-AL-001 was sent on 2026-08-04T17:32Z

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 -17.0 -31.0 527.0 C 18.0 2026-08-04T19:05Z Measurement based on the best fit between GOES CCOR-1 and STEREO A COR2 imagery in SWPC_CAT as well as the potential estimated source location. 1: Result 1 (2.0 AU)
Earth = 2026-08-08T12:00Z
Europa Clipper = 2026-08-09T06:00Z
OSIRIS-APEX = 2026-08-09T12:00Z
Mary Aronne on 2026-08-04T16:45Z



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