DONKI Header

CCMC DONKI

DONKI: Menu Page

Go to:

 DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-09-01T23:00Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
GOES: CCOR-1
Activity ID: 2026-09-01T23:00:00-CME-001 (version 1)
Source Location: N15E90
Note Keyword:
GAP: Data gap
OVR: Event partially overlaps with another CME
Source Signature Keyword:
FLR: Flare
OFL: Moving/Opening field lines
Morphology Keyword:
Note: CME first seen to the NE by SOHO LASCO C2 beginning at 2026-09-01T23:00Z, as well as by SOHO LASCO C3 and GOES CCOR-1 in later frames. This CME is not seen in STEREO A COR2 due to a data gap which began at 2026-09-01T19:08Z. The source of this event is a C5.7 flare seen originating from along or just beyond the NE limb (approx. N15E90) peaking at 2026-09-01T21:10Z as seen in SDO AIA 131. Field line opening is also visible in SDO AIA 171, 193 and GOES SUVI 284. 
Version 1 submitted on 2026-09-02T01:08Z by Melissa Kane
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 Plane-of-sky NONE 15.0 372.0 S 27.0 2026-09-02T08:21Z Plane-of-sky using a longitude of E90 due to source along/beyond the limb and lack of STEREO A imagery to triangulate. Not modeled Melissa Kane on 2026-09-02T01:09Z



All directly linked activities:
2026-09-01T21:04:00-FLR-001
FLR Type: C5.7


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