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DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-18T09:23Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
SOHO: LASCO/C2
SOHO: LASCO/C3
GOES: CCOR-1
Activity ID: 2026-03-18T09:23:00-CME-001 (version 2)
Source Location: S16W05
Active Region Number: 14392
Note Keyword:
3P: 3-part structure CME
DFL: Likely deflection of the event within the FOV
HAL: Halo CME
Source Signature Keyword:
FLR: Flare
OFL: Moving/Opening field lines
DIM: Dimming
Morphology Keyword:
L: Loop
Note: Partial halo CME first seen to the SE by STEREO A COR2 at 2026-03-18T09:23Z, as well as to the West in SOHO LASCO C2/C3 and GOES CCOR-1 in later frames. The source of this event is an M2.7 flare from Active Region 4392 (S16W05) which peaked at 2026-03-18T08:42Z. This flare could be seen in GOES SUVI 131, along with dimming and field line opening seen in GOES SUVI 195, 284 and STEREO A EUVI 195. The dimming feature appears to propagate towards the Northwest, suggesting possible deflection.
Version 1 submitted on 2026-03-18T12:51Z by Melissa Kane
Version 2 submitted on 2026-03-18T17:19Z by Melissa Kane
A Notification with ID
20260318-AL-002 was sent on 2026-03-18T13:48Z
A Notification with ID
20260318-AL-003 was sent on 2026-03-18T19:52Z
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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 |
19.0 |
-6.0 |
731.0 |
C |
28.0 |
2026-03-18T13:41Z |
Measurement based on approximate source location and best fit in SOHO LASCO C2/C3, STEREO A COR2 and GOES CCOR-1. |
1: Result 1 (2.0 AU)
Earth = 2026-03-20T17:24Z
BepiColombo = 2026-03-19T10:33Z
OSIRIS-APEX = 2026-03-21T07:08Z
STEREO A = 2026-03-20T18:00Z
2: Result 2 (5.5 AU)
Earth = 2026-03-20T16:52Z
BepiColombo = 2026-03-19T10:24Z
OSIRIS-APEX = 2026-03-21T06:48Z
Europa Clipper = 2026-03-23T18:00Z
Lucy = 2026-03-30T20:00Z
STEREO A = 2026-03-20T18:00Z
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Melissa Kane on 2026-03-18T12:52Z |
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