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DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2025-12-18T03:36Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2025-12-18T03:36:00-CME-001 (version 2)
Note Keyword:
COL: Possible collision with previous CME
FOV: Front Bright front; may be evidence of pileup
OFL: Outflowing material at the back of the CME
OVR: Event partially overlaps with another CME
Source Signature Keyword:
OFL: Moving/Opening field lines
Morphology Keyword:
F: Flux Rope
Note: Bright, slow CME observed to the SW in SOHO LASCO C2/C3, GOES CCOR-1, and STEREO A COR2, preceeding CME 2025-12-18T11:00Z as the two overlap. The source is observed far-sided over the SW limb in SDO AIA 171/193 as several concurrent slow, wide field line loops rising and breaking, starting as early as around 2025-12-17T23:00Z and lasting several hours as late as around 2025-12-18T07:00Z. Also observed in STEREO A EUVI 195 as field line movement and some brightening of loops just inside the SW limb as viewed from STEREO A starting around 2025-12-18T01:55Z, following a data gap beginning at 2025-12-18T19:35Z.
Version 1 submitted on 2025-12-18T19:27Z by Tony Iampietro
Version 2 submitted on 2025-12-18T19:30Z by Tony Iampietro
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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 |
138.0 |
-37.0 |
245.0 |
S |
21.0 |
2025-12-18T21:11Z |
Triangulation between SOHO LASCO C3 and STEREO A COR2 of the outermost bright leading edge. |
Not modeled
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Tony Iampietro on 2025-12-18T19:29Z |
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