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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-28T17:09Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-03-28T17:09:00-CME-001 (version 1)
Source Location: S25E56
Active Region Number: 14405
Note Keyword:
DFL: Likely deflection of the event within the FOV
GAP: Data gap
CHP: CME - Coronal Hole Proximity
Source Signature Keyword:
OFL: Moving/Opening field lines
Morphology Keyword:
Note: Narrow CME first seen to the SE in STEREO A COR2 starting at 2026-03-28T17:09Z. It is also seen to the SE in GOES CCOR-1 but is covered by a real-time data gap in SOHO LASCO C2/C3. The source of this CME is most likely an eruption best seen in GOES SUVI 284 from AR 4405 (S25E56) starting at 2026-03-28T14:56Z with opening field lines. Likely due to its proximity to a coronal hole centered approximately around S15E35 at the CME start time, there is some deflection. 
Version 1 submitted on 2026-03-28T19:38Z by Elizabeth Juelfs
No Notification has been sent for this activity yet.

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 -66.0 -45.0 300.0 S 12.0 2026-03-29T03:50Z Measurement based on best fit between STEREO A COR2 and GOES CCOR-1 in SWPC_CAT as well as visible source candidate. Not modeled Elizabeth Juelfs on 2026-03-28T19:39Z



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