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DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-05-16T16:36Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-05-16T16:36:00-CME-001 (version 2)
Source Location: N22W17
Active Region Number: 14436
Note Keyword:
DFL: Likely deflection of the event within the FOV
OFL: Outflowing material at the back of the CME
OVR: Event partially overlaps with another CME
CHP: CME - Coronal Hole Proximity
Source Signature Keyword:
FLR: Flare
DFLR: Double ribbon flare
PEA: Post eruption arcade
OFL: Moving/Opening field lines
BR: Brightening
DIM: Dimming
EUVW: EUV Wave
Morphology Keyword:
F: Flux Rope
Note: CME observed to the NW in SOHO LASCO C2/C3 and GOES CCOR-1, and NE in STEREO A COR2. The source is observed as significant dimming and an EUV wave centered around N30W13, and field line movement, in SDO AIA 171/193 starting around 2026-05-16T15:18Z, associated with an M1.9 flare peaking at 2026-05-16T16:12Z from AR 14436 (N22W17).
Version 1 submitted on 2026-05-16T18:06Z by Tony Iampietro
Version 2 submitted on 2026-05-16T20:17Z by Melissa Kane
A Notification with ID
20260516-AL-006 was sent on 2026-05-16T18:38Z
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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
|
M2M_CATALOG |
LE
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true |
SWPC_CAT |
9.0 |
37.0 |
1201.0 |
O |
22.0 |
2026-05-16T19:27Z |
Triangulation between SOHO LASCO C2/C3 and STEREO A COR2. |
1: Result 1 (2.0 AU)
Earth = 2026-05-19T00:00Z
Europa Clipper = 2026-05-20T21:00Z
OSIRIS-APEX = 2026-05-19T16:00Z
2: Result 2 (5.5 AU)
Earth = 2026-05-19T00:00Z
Parker Solar Probe = 2026-06-05T21:28Z
Europa Clipper = 2026-05-20T21:00Z
OSIRIS-APEX = 2026-05-19T16:00Z
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Tony Iampietro on 2026-05-16T18:07Z |
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CME Analysis
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M2M_CATALOG |
LE
|
false |
SWPC_CAT |
1.0 |
29.0 |
716.0 |
C |
32.0 |
2026-05-16T21:43Z |
Measurement of inner-more bright feature of this CME. Likely not the most representative leading edge. |
Not modeled
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2026-05-17T00:10Z |
Melissa Kane on 2026-05-17T00:30Z |
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