DONKI Header

CCMC DONKI

DONKI: Menu Page

Go to:

 DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-12T14:36Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
GOES: CCOR-1
Activity ID: 2026-03-12T14:36:00-CME-001 (version 3)
Source Location: S27E57
Note Keyword:
DFL: Likely deflection of the event within the FOV
Faint: Faint event; may affect type assignment
GAP: Data gap
OVR: Event partially overlaps with another CME
PRM: Prominence material (filamentary structures)
Source Signature Keyword:
DFLR: Double ribbon flare
FIL: Filament eruption
OFL: Moving/Opening field lines
BR: Brightening
Morphology Keyword:
F: Flux Rope
Note: CME observed to the SE in SOHO LASCO C2/C3 and GOES CCOR-1, not in STEREO A COR2 due to a data gap. The source is a filament eruption centered around S27E57, observed starting around 2026-03-12T13:29Z in GOES SUVI 171/195/283/304 as the filament ejecta, moving field lines, and brightening on disk. Partially overlaps with far-sided CME 2026-03-12T15:48Z. 
Version 1 submitted on 2026-03-12T17:45Z by Tony Iampietro
Version 2 submitted on 2026-03-12T17:49Z by Tony Iampietro
Version 3 submitted on 2026-03-12T17:50Z 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 -57.0 -14.0 783.0 C 17.0 2026-03-12T19:02Z Single spacecraft 3D analysis using SOHO LASCO C2/C3 due to no available STEREO A COR2 to triangulate, using the on-disk source longitude of E57. With possible deflection, the longitude could range E50-E65. 1: Result 1 (2.0 AU)
2: Result 2 (5.5 AU)
Tony Iampietro on 2026-03-12T17:47Z



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