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DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-04-30T18:24Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
GOES: CCOR-1
Activity ID: 2026-04-30T18:24:00-CME-001 (version 1)
Note Keyword:
Source Signature Keyword:
Morphology Keyword:
L: Loop
Note: Second of two faint, wide CMEs seen to the south-southwest in SOHO LASCO C2 and to the southeast more prominently in STEREO A COR2; the source could be associated with a minor eruption in 14428 (~S24W11), with a slowly varying dimming signature starting after 18:00Z best viewed in SDO composite imagery, particularly the 304/211/171 Angstrom imager. Follows shortly behind CME: 2026-04-30T12:38Z which has a similar appearance. Triangulation between the SOHO and STEREO A spacecraft strongly suggests a front-sided source location, though the source is relatively uncertain.
Version 1 submitted on 2026-04-30T21:50Z by Chris Stubenrauch
No Notification has been sent for this activity yet.
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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
|
true |
SWPC_CAT |
6.0 |
-20.0 |
237.0 |
S |
32.0 |
2026-05-01T07:23Z |
Measurement of the leading edge using SOHO C2 and STEREO A COR2 for triangulation, which suggests a front-sided source possibly associated with AR 4428. Appears to be more northward than the earlier CME occurring before it, though of very similar velocity. |
1: Result 1 (2.0 AU)
Earth = 2026-05-05T08:00Z
(PE: 27.8 h)
2: Result 2 (2.0 AU)
Earth = 2026-05-05T04:00Z
(PE: 23.8 h)
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Mary Aronne on 2026-05-04T15:52Z |
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CCMC DONKI