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DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-07T04:08Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
SOHO: LASCO/C3
GOES: CCOR-1
Activity ID: 2026-03-07T04:08:00-CME-001 (version 3)
Note Keyword:
Faint: Faint event; may affect type assignment
FF: Event fails/disappears before exiting COR2
GAP: Data gap
HAL: Halo CME
OVR: Event partially overlaps with another CME
Source Signature Keyword:
Morphology Keyword:
F: Flux Rope
Note: A clear partial-halo CME seen in STEREO A COR2 to the SW, with the start of the event covered by the nighttime data gap in STEREO A COR2 coronagraph. The start of this event is likely much earlier. This CME in STEREO A likely (but not definitively) corresponds to one of several follow-up CMEs to the 2026-03-06T18:12Z CME, possibly to the front that is first seen to the SE in SOHO LASCO C2 at 2026-03-07T00:00Z. The CME is also visible in to the SE in GOES CCOR-1.
Version 1 submitted on 2026-03-07T17:18Z by Anna Chulaki
Version 2 submitted on 2026-03-09T12:23Z by Mary Aronne
Version 3 submitted on 2026-03-09T12:23Z by Mary Aronne
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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
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M2M_CATALOG |
LE
|
true |
SWPC_CAT |
-139.0 |
-9.0 |
406.0 |
S |
37.0 |
2026-03-07T10:50Z |
Very speculative, approximate analysis with two coronagraphs, initially based on the fitting of the clear halo front in STEREO A COR2A and later assuming that one of the less clear follow up fronts in SOHO/CCOR1 is the corresponding front (likely the front first seen in SOHO LASCO C2 at 2026-03-07T00Z), however this front is more of a speculation. The speeds in analysis can vary depending on the chosen half width, which in this analysis was based on the SOHO LASCO imagery and set to 37 degrees. |
1: Result 1 (2.0 AU)
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Elizabeth Juelfs on 2026-03-07T21:07Z |
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