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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2025-03-16T00:12Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
Activity ID: 2025-03-16T00:12:00-CME-001 (version 3)
Note Keyword:
DFL: Likely deflection of the event within the FOV
Faint: Faint event; may affect type assignment
HAL: Halo CME
Source Signature Keyword:
PEA: Post eruption arcade
OFL: Moving/Opening field lines
Morphology Keyword:
FS: Flux Rope and Shock Candidate
Note: Complex-shaped, somewhat pointy-nosed and possibly partial halo CME to the southwest, seen the brightest in STEREO A COR2. Its source is behind the SW limb (both in SDO and in STEREO A) and likely associated with Active Region 4012 (now at approximately W125) which was fairly complex when it was on the Earth-facing disk; its coronal signatures are fast-opening field lines behind the SW limb in both EUV imagers starting at 2025-03-16T00:32Z, as seen in SDO AIA 193/171, EUVI A 195 and SUVI 285. Much later (after 05Z) some high post-eruptive arcades are seen in EUVI A 304 appearing from behind the limb, indicating the source that is far behind the limb, as seen from STEREO A. The much fainter shock can be best seen mostly as it pushes the streamer in the south south west towards the east. Likely deflection of about 10 to 20 degrees eastward relative to the source at W125 caused by a large coronal hole located to the northwest of Active Region 4012.

Submitted on 2025-03-16T20:30Z by Chris Stubenrauch

A Notification with ID 20250316-AL-001 was sent on 2025-03-16T15:30Z

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 SWPC_CAT 109.0 -16.0 1213.0 O 31.0 2025-03-16T03:42Z Uncertain analysis based solely on the best possible fit with two coronagraphs. The high posts-eruptive arcades behind the west limb in STEREO A EUV imagery showing much later than the original coronal signatures of opening field lines indicate the source with the longitude >120 deg. However, no fit was found with longitudes >115 deg and the best fit was obtained with the longitude of 109 degrees. Likely deflection of about 10 to 20 degrees eastward relative to the source at W125 would be caused by a large coronal hole located to the northwest of Active Region 4012 at approximately W125. 1: Result 1 (2.0 AU)
Juice = 2025-03-17T23:40Z
2: Result 2 (5.5 AU)
Juice = 2025-03-17T22:30Z
3: Result 3 (2.0 AU)
Juice = 2025-03-17T11:34Z
Chris Stubenrauch on 2025-03-16T20:31Z



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