DONKI Header

CCMC DONKI

DONKI: Menu Page

Go to:

 DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-03-16T12:53Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
SOHO: LASCO/C2
SOHO: LASCO/C3
GOES: CCOR-1
Activity ID: 2026-03-16T12:53:00-CME-001 (version 3)
Source Location: N17E177
Note Keyword:
DFL: Likely deflection of the event within the FOV
OVR: Event partially overlaps with another CME
Source Signature Keyword:
OFL: Moving/Opening field lines
BR: Brightening
Morphology Keyword:
L: Loop
Note: Bright CME first seen to the NW by STEREO A COR2 beginning at 2026-03-16T12:53Z, as well as by SOHO LASCO C2, C3 and GOES CCOR-1 in later frames. The source of this event is an eruption seen from beyond the NW limb in STEREO A EUVI 195 seen beginning at approx. 2026-03-16T11:55Z. This eruption may have originated from far sided former Active Region 14378 (currently located at approx. N17E177). This CME overlaps in the field of view with Earth directed CME: 2026-03-16T13:26Z. 
Version 1 submitted on 2026-03-16T23:27Z by Melissa Kane
Version 2 submitted on 2026-03-17T00:04Z by Melissa Kane
Version 3 submitted on 2026-03-20T16:20Z by Mary Aronne
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 -177.0 40.0 380.0 S 34.0 2026-03-16T22:01Z Measurement based on approximate source location and best fit in SOHO LASCO C2/C3, GOES CCOR-1 and STEREO A COR2. 1: Result 1 (2.0 AU)
Solar Orbiter = 2026-03-18T04:26Z
Melissa Kane on 2026-03-16T23:28Z



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