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DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-23T02:36Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-03-23T02:36:00-CME-001 (version 3)
Source Location: S17W65
Active Region Number: 14392
Note Keyword:
3P: 3-part structure CME
COL: Possible collision with previous CME
DFL: Likely deflection of the event within the FOV
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
CHP: CME - Coronal Hole Proximity
Source Signature Keyword:
PEA: Post eruption arcade
OFL: Moving/Opening field lines
Morphology Keyword:
O: Other
Note: CME observed to the SW in SOHO LASCO C2/C3 and GOES CCOR-1, and as a partial halo to the S/SW in STEREO A COR2. This CME immediately follows the larger CME 2026-03-22T23:24Z, and it is very likely outflow or a streamer blowout following that eruption from AR 14392 (S17W65), corroborated via coronagraph triangulation in the swpc_cat tool. The field line loops over AR 14392, which initially began to erupt around 2026-03-22T23:34Z in GOES SUVI 171/195/284, see a second movement starting around 2026-03-23T01:31Z likely responible for this secondary, slower front from that eruption. That first eruption is associated with a C1.5 flare as observed in GOES SUVI 131, which is not linked to this second front.
Version 1 submitted on 2026-03-23T13:24Z by Tony Iampietro
Version 2 submitted on 2026-03-23T16:01Z by Tony Iampietro
Version 3 submitted on 2026-03-23T16:01Z by Tony Iampietro
A Notification with ID
20260323-AL-003 was sent on 2026-03-23T15:52Z
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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 |
78.0 |
-18.0 |
551.0 |
C |
40.0 |
2026-03-23T09:46Z |
Triangulation between SOHO LASCO C3 and STEREO A COR2, using later frames only due to observed acceleration when including early frames. The CME shape is very distorted in STEREO A COR2 compared to SOHO LASCO, appearing much wider. Using STEREO A COR2's width, the leading edge still tracks very well between COR2 and C3. |
1: Result 1 (2.0 AU)
BepiColombo = 2026-03-24T00:33Z
Juice = 2026-03-27T05:41Z
STEREO A = 2026-03-25T05:20Z
OSIRIS-APEX = 2026-03-25T20:00Z
2: Result 2 (5.5 AU)
BepiColombo = 2026-03-24T00:24Z
Juice = 2026-03-27T05:27Z
STEREO A = 2026-03-25T05:03Z
Europa Clipper = 2026-03-28T00:00Z
OSIRIS-APEX = 2026-03-25T20:00Z
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2026-03-23T12:08Z |
Tony Iampietro on 2026-03-23T13:27Z |
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