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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2025-05-31T11:53Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
Activity ID: 2025-05-31T11:53:00-CME-001 (version 1)
Source Location: S25E40
Note Keyword:
GAP: Data gap
Source Signature Keyword:
FIL: Filament eruption
OFL: Moving/Opening field lines
DIM: Dimming
Morphology Keyword:
J: Jet
Note: CME first seen in the Southeast by STEREO A COR2 beginning at 2025-05-31T11:53Z. This event is not clearly seen in SOHO LASCO C2/C3 or GOES CCOR-1. The source of this CME is a small filament eruption seen located at approx. S25E40, beginning at approx. 2025-05-31T10:55Z as seen in SDO AIA and STEREO A EUVI 304. Dimming and field line movement is also visible in SDO AIA 171 and 211. 
Version 1 submitted on 2025-05-31T23:52Z by Melissa Kane
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) Submitted By
CME Analysis M2M_CATALOG LE true SWPC_CAT -39.0 -16.0 408.0 S 10.0 2025-05-31T20:27Z Measurement based on approximate source location and best fit in STEREO A COR2. This CME was not visible to measure in SOHO LASCO C2/C3. 1: Result 1 (2.0 AU)
Melissa Kane on 2025-05-31T23:54Z



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