DONKI Header

CCMC DONKI

DONKI: Menu Page

Go to:

 DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-05-28T05:53Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
SOHO: LASCO/C2
Activity ID: 2026-05-28T05:53:00-CME-001 (version 1)
Source Location: S38E18
Note Keyword:
Faint: Faint event; may affect type assignment
Source Signature Keyword:
DIM: Dimming
Morphology Keyword:
O: Other
Note: Faint CME observed to the E in STEREO A COR2, and extremely faint in LASCO C2 only resolvable in running difference imagery. The source may be faint dimming in SDO AIA 193 as early as 2026-05-28T05:04Z centered around S38E18 south of AR 14436 (S16E27). 
Version 1 submitted on 2026-05-28T16:47Z by Tony Iampietro
No Notification has been sent for this activity yet.

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 -30.0 -14.0 337.0 S 38.0 2026-05-28T16:15Z Triangulation between good visibility in STEREO A COR2 and poor visibility in SOHO LASCO C2, but still able to track a related leading edge between both for several frames. 1: Result 1 (2.0 AU)
Earth = 2026-05-31T22:00Z
Europa Clipper = 2026-06-03T09:00Z
OSIRIS-APEX = 2026-06-01T23:00Z
2: Result 2 (2.0 AU)
Earth = 2026-05-31T12:00Z
Europa Clipper = 2026-06-02T23:00Z
OSIRIS-APEX = 2026-06-01T08:00Z
2026-05-28T16:24Z Tony Iampietro on 2026-05-28T16:48Z



All directly linked activities:
No Linked Activity Found.


Comments by users:
0 comment received.
Insert title here

The Moon to Mars Space Weather Analysis Office and other entities provide data to DONKI as a courtesy to the community.
By visiting this site, you acknowledge that you understand and agree to the Important Disclaimer Notice

If you are looking for the official U.S. Government forecast for space weather, please go to NOAA's Space Weather Prediction Center (https://swpc.noaa.gov). This "Experimental Research Information" consists of preliminary NASA research products and should be interpreted and used accordingly.

Curator: Chiu Wiegand | NASA Official: Dr. Masha Kuznetsova | Privacy and Security Notices | Accessibility | CCMC Data Policy