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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-28T03:48Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-03-28T03:48:00-CME-001 (version 2)
Source Location: S25E70
Active Region Number: 14405
Note Keyword:
3P: 3-part structure CME
FOV: Front Bright front; may be evidence of pileup
Source Signature Keyword:
FLR: Flare
OFL: Moving/Opening field lines
BR: Brightening
DIM: Dimming
EUVW: EUV Wave
Morphology Keyword:
Note: Wide CME visible to the SE in SOHO LASCO C2/C3 and STEREO A COR2. The CME is also visible in GOES CCOR-1 starting at 2026-03-28T06:45Z due to Earthshine. The source is a long duration M1.3 flare from AR 14405 (approximately S25E70) starting at 2026-03-28T02:16Z. Dimming and EUV wave are best seen in GOES SUVI 195. Moving field lines are also visible in GOES SUVI 171/195/284. The eruption can also be seen off the east limb in STEREO A EUV 195 imagery. 
Version 1 submitted on 2026-03-28T12:40Z by Mary Aronne
Version 2 submitted on 2026-03-28T18:45Z by Elizabeth Juelfs
A Notification with ID 20260328-AL-001 was sent on 2026-03-28T13:42Z

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 -76.0 -28.0 823.0 C 40.0 2026-03-28T08:30Z Measurement based on the best fit between SOHO LASCO C2/C3, STEREO A COR2, and GOES CCOR-1 in SWPC_CAT. 1: Result 1 (2.0 AU)
2: Result 2 (5.5 AU)
Juno = 2026-04-11T12:00Z
2026-03-28T12:30Z Mary Aronne on 2026-03-28T12:41Z



All directly linked activities:
2026-03-28T02:16:00-FLR-001
FLR Type: M1.3


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