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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-31T01:48Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
Activity ID: 2026-03-31T01:48:00-CME-001 (version 1)
Source Location: N16E00
Active Region Number: 14403
Note Keyword:
DFL: Likely deflection of the event within the FOV
Faint: Faint event; may affect type assignment
GAP: Data gap
CHP: CME - Coronal Hole Proximity
Source Signature Keyword:
FLR: Flare
FIL: Filament eruption
OFL: Moving/Opening field lines
Morphology Keyword:
Note: This faint CME is visible to the NW in SOHO LASCO C2 following a lower C-class flare with associated filament eruption and moving/opening field lines starting around 2026-03-31T01:00Z as seen in GOES SUVI 304 and 284. This CME is not visible in GOES CCOR-1 due to an Earth-shine event, in STEREO A COR2 imagery due to a data gap from 2026-03-30T18:23Z to 2026-03-31T03:23Z, and in SOHO LASCO C3 due to faintness of event. There is likely deflection of this event due to a coronal hole located due south of the erupting region.
Version 1 submitted on 2026-03-31T12:34Z by Carina Alden
A Notification with ID
20260331-AL-001 was sent on 2026-03-31T14:01Z
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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 |
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CME Analysis
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M2M_CATALOG |
LE
|
true |
SWPC_CAT |
15.0 |
19.0 |
569.0 |
C |
16.0 |
2026-03-31T07:42Z |
Parameters based on potential source location and best fit using SOHO LASCO C2 imagery. The front of this CME is diffuse and may cause some uncertainty with parameters. This CME is not clearly seen in other coronagraphs due to various reasons (see main CME note). |
1: Result 1 (2.0 AU)
Earth = 2026-04-02T18:00Z
OSIRIS-APEX = 2026-04-03T03:00Z
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Carina Alden on 2026-03-31T12:36Z |
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