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Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-01-18T18:09Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
SOHO: LASCO/C2
SOHO: LASCO/C3
GOES: CCOR-1
Activity ID: 2026-01-18T18:09:00-CME-001 (version 3)
Source Location: S15E20
Active Region Number: 14341
Note Keyword:
3P: 3-part structure CME
DPL: CME exhibits dimpled front
FOV: Front Bright front; may be evidence of pileup
GAP: Data gap
HAL: Halo CME
OFL: Outflowing material at the back of the CME
PRM: Prominence material (filamentary structures)
CHP: CME - Coronal Hole Proximity
Source Signature Keyword:
FLR: Flare
DFLR: Double ribbon flare
PEA: Post eruption arcade
FIL: Filament eruption
OFL: Moving/Opening field lines
DIM: Dimming
EUVW: EUV Wave
Morphology Keyword:
FS: Flux Rope and Shock Candidate
Note: Halo CME first seen to the East by STEREO A COR2 beginning at 2026-01-18T18:09Z, as well as by GOES CCOR-1 as a halo in later frames. This CME is not currently visible in SOHO LASCO C2/C3 due to a downlink data gap which began at 2026-01-18T18:00Z. The source of this CME is a long duration X1.9 flare from Active Region 14341 (S15E20), which peaked at 2026-01-18T18:09Z, with some contribution from Active Region 14345 (S16E27). This flare is visible in SDO AIA 94 and 131, along with a wide region of dimming and field line opening seen in SDO AIA 193, 211 and GOES SUVI 284, as well as post eruptive arcades seen in SDO AIA 94 and 193. Ejecta is seen in SDO AIA 193 and, southwardly directed off the limb, in STEREO A EUV 304 imagery.
Version 1 submitted on 2026-01-18T20:50Z by Anna Chulaki
Version 2 submitted on 2026-01-19T00:04Z by Anna Chulaki
Version 3 submitted on 2026-01-19T00:18Z by Anna Chulaki
Version 4 submitted on 2026-01-19T14:06Z by Anna Chulaki
A Notification with ID
20260118-AL-005 was sent on 2026-01-18T21:39Z
A Notification with ID
20260119-AL-001 was sent on 2026-01-19T07:24Z
A Notification with ID
20260119-AL-004 was sent on 2026-01-19T17:22Z
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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 |
SH
|
true |
SWPC_CAT |
-2.0 |
-6.0 |
1820.0 |
O |
53.0 |
2026-01-18T19:55Z |
Approximate analysis of the wide faint shock front based on the fit with two coronagraphs (STEREO A COR2 and GOES CCOR-1) in the absence of SOHO LASCO imagery that is expected to be available later. |
1: Result 1 (2.0 AU)
Earth = 2026-01-19T20:17Z
(PE: 1.4 h)
OSIRIS-APEX = 2026-01-19T22:05Z
Solar Orbiter = 2026-01-19T13:15Z
STEREO A = 2026-01-20T06:13Z
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Anna Chulaki on 2026-01-19T06:48Z |
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CME Analysis
|
M2M_CATALOG |
LE
|
true |
SWPC_CAT |
-22.0 |
-6.0 |
1473.0 |
O |
46.0 |
2026-01-18T20:17Z |
Approximate analysis based on the fit with all three coronagraphs (SOHO LASCO C2/C3, STEREO A COR2 and GOES CCOR-1) and on the location of the flare, made once SOHO LASCO imagery became available. Analysis is complicated by the CME having two overlapping lobes, one more to the SE and another a bit more central. |
1: Result 1 (2.0 AU)
Earth = 2026-01-20T01:22Z
(PE: 6.5 h)
Solar Orbiter = 2026-01-19T17:18Z
OSIRIS-APEX = 2026-01-20T13:00Z
STEREO A = 2026-01-21T04:00Z
2: Result 2 (5.5 AU)
Earth = 2026-01-20T01:07Z
(PE: 6.2 h)
Juno = 2026-01-29T09:14Z
Solar Orbiter = 2026-01-19T17:04Z
OSIRIS-APEX = 2026-01-20T13:00Z
STEREO A = 2026-01-21T04:00Z
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Anna Chulaki on 2026-01-19T14:00Z |
|
CME Analysis
|
M2M_CATALOG |
LE
|
false |
SWPC_CAT |
-27.0 |
-3.0 |
1431.0 |
O |
41.0 |
2026-01-18T20:14Z |
Very approximate early analysis based on the fit of one of at least two overlapping fronts with two coronagraphs (GOES CCOR-1 and STEREO A COR2). The CME is not yet available because of a scheduled gap in downlink, but will become available later. |
1: Result 1 (2.0 AU)
Earth = 2026-01-20T02:38Z
(PE: 7.7 h)
Solar Orbiter = 2026-01-19T18:15Z
OSIRIS-APEX = 2026-01-20T17:00Z
2: Result 2 (5.5 AU)
Earth = 2026-01-20T02:18Z
(PE: 7.4 h)
Juno = 2026-01-29T16:01Z
Solar Orbiter = 2026-01-19T18:01Z
OSIRIS-APEX = 2026-01-20T17:00Z
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Melissa Kane on 2026-01-18T21:21Z |
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