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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2025-07-12T04:12Z ( SOHO: LASCO/C2 )

All Detecting Spacecrafts:

SOHO: LASCO/C2

Activity ID: 2025-07-12T04:12:00-CME-001 (version 2)
Source Location: N32W23
Active Region Number: 14037

Note Keyword:

Faint: Faint event; may affect type assignment

OFL: Outflowing material at the back of the CME

OVR: Event partially overlaps with another CME

Source Signature Keyword:

PEA: Post eruption arcade

FIL: Filament eruption

BR: Brightening

DIM: Dimming

Morphology Keyword:

L: Loop

Note: Faint CME to the NW seen in SOHO LASCO C2 and obscured by pylon in C3; not really seen in other coronagraphs. It is the second faint front (the earlier, 03Z front is even fainter and disappears really quickly in C2 imagery). Source is likely a slowly developing, messy eruption near AR 4037, centered ~(N32W23), starting as early as 2025-07-1tT00:54Z and lasting through the whole morning (at least to 5Z). The eruption location seems to move further west with time. Coronal signatures include developing faint dimming and faint post-eruptive arcades, as seen in SDO AIA 193/304, GOES SUVI 284 and STEREO A EUVI 195.

Version 1 submitted on 2025-07-12T21:23Z by Anna Chulaki
Version 2 submitted on 2025-07-13T18:41Z by Anna Chulaki

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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)	Submitted By
CME Analysis	M2M_CATALOG	LE	true	Plane-of-sky	NONE	60.0	308.0	S	23.0	2025-07-12T10:00Z	The CME is not seen in any other coronagraph other than SOHO LASCO C2, so only plane-of-sky measurement is possible.	Not modeled	Anna Chulaki on 2025-07-12T21:25Z

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