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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-19T20:36Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-03-19T20:36:00-CME-001 (version 1)
Note Keyword:
PRM: Prominence material (filamentary structures)
SB: Streamer Blowout following CME
Source Signature Keyword:
FIL: Filament eruption
Morphology Keyword:
Note: Slow, streamer blowout-like CME first seen to the NE in SOHO LASCO C2 starting around 2026-03-19T20:36Z. It is also seen the NE in SOHO LASCO C3 and to the NNE in STEREO A COR2. It is also seen to the NE in GOES CCOR-1 but is mostly obscured by the pylon. The source is possibly related to a large but slow filament eruption over the NE limb beginning around 2026-03-19T18:23Z best seen in GOES SUVI 304. The filament can be seen rising a few hours prior to the eruption. 
Version 1 submitted on 2026-03-20T11:58Z by Elizabeth Juelfs
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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 -105.0 45.0 264.0 S 24.0 2026-03-20T16:54Z Measurement relies heavily on later frames in SOHO LASCO C2/C3 and STEREO A COR2 as there appears to be some acceleration as the CME propagates farther from the Sun. Not modeled Elizabeth Juelfs on 2026-03-20T11:59Z



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