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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-04-23T09:12Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-04-23T09:12:00-CME-001 (version 1)
Source Location: N15W55
Note Keyword:
Source Signature Keyword:
FLR: Flare
OFL: Moving/Opening field lines
Morphology Keyword:
F: Flux Rope
Note: CME seen to the northwest in GOES/CCOR-1 and SOHO/C2 and SOHO/C3 coronagraphs and due north in STEREO A/COR2 in association with an M4.3-class solar flare in AR 4419 (~W60) starting around 2026-04-23T08:45Z. The eruption is seen best in GOES SUVI 284 as a brightening and the expulsion of plasma to the northeast. Also seen in STEREO A EUV with an eruptive signature with significant dimming around center-disk. Deflected to the north based on the presentation/directionality in STEREO A coronagraphs. 
Version 1 submitted on 2026-04-23T15:59Z by Chris Stubenrauch
Version 2 submitted on 2026-04-28T19:50Z by Mary Aronne
A Notification with ID 20260423-AL-004 was sent on 2026-04-23T18:24Z

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 49.0 28.0 851.0 C 31.0 2026-04-23T13:20Z Leading edge measurement using triangulation between al three coronagraphs to ascertain the longitude. 1: Result 1 (2.0 AU)
Juice = 2026-04-26T23:37Z
STEREO A = 2026-04-25T10:37Z
Europa Clipper = 2026-04-28T02:00Z
OSIRIS-APEX = 2026-04-26T12:00Z
Chris Stubenrauch on 2026-04-23T16:00Z



All directly linked activities:
2026-04-23T08:40:00-FLR-001
FLR Type: M4.3


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