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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-05-22T10:48Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-05-22T10:48:00-CME-001 (version 3)
Source Location: N18W96
Active Region Number: 14436
Note Keyword:
Source Signature Keyword:
FLR: Flare
PEA: Post eruption arcade
OFL: Moving/Opening field lines
DIM: Dimming
Morphology Keyword:
Note: CME visible to the NW in SOHO LASCO C2/C3, GOES CCOR-1, and STEREO A COR2. The source is an M2.3 flare peaking at 2026-05-22T10:29Z from AR 14436 (approximately N18W96) as seen in STEREO A EUV 195 imagery. Dimming is best seen in STEREO A EUV 195 imagery. Opening field lines and post-eruptive arcades are visible in SDO AIA 171/193/284 imagery. 
Version 1 submitted on 2026-05-22T12:37Z by Mary Aronne
Version 2 submitted on 2026-05-22T12:50Z by Mary Aronne
Version 3 submitted on 2026-05-22T13:45Z by Mary Aronne
A Notification with ID 20260522-AL-001 was sent on 2026-05-22T13:51Z

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 95.0 35.0 594.0 C 28.0 2026-05-22T17:11Z Updated measurement based on source location as well as the best fit between SOHO LASCO C2/C3, STEREO A COR2, and GOES CCOR-1 in SWPC_CAT. 1: Result 1 (2.0 AU)
Parker Solar Probe = 2026-05-23T18:09Z
2026-05-22T13:21Z Mary Aronne on 2026-05-22T13:23Z
CME Analysis M2M_CATALOG LE false SWPC_CAT 95.0 33.0 639.0 C 27.0 2026-05-22T16:44Z Preliminary measurement based on source location using SOHO LASCO C2/C3 and GOES CCOR-1 imagery. Not modeled 2026-05-22T12:30Z Mary Aronne on 2026-05-22T12:38Z



All directly linked activities:
2026-05-22T10:03:00-FLR-001
FLR Type: M2.3


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