DONKI Header

CCMC DONKI

DONKI: Menu Page

Go to:

 DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2026-07-23T15:38Z ( STEREO A: SECCHI/COR2 )
All Detecting Spacecrafts:
STEREO A: SECCHI/COR2
SOHO: LASCO/C3
Activity ID: 2026-07-23T15:38:00-CME-001 (version 2)
Source Location: S20E19
Active Region Number: 14495
Note Keyword:
DFL: Likely deflection of the event within the FOV
CHP: CME - Coronal Hole Proximity
Source Signature Keyword:
FLR: Flare
EUVW: EUV Wave
Morphology Keyword:
Note: CME first seen to the E in STEREO A COR2 starting at 2026-07-23T15:38Z. The CME is also visible to the east in SOHO LASCO C3, but not clearly visible in SOHO LASCO C2 or GOES CCOR-1 imagery due to it's faintness. The source is most likely related to a C2.7 flare from around S20E19. The flare and associated eruption is best seen in SDO AIA 131. Field line movement and a faint EUV wave can be seen in SDO AIA 193. The eruption appears to be directed northward. 
Version 1 submitted on 2026-07-24T00:43Z by Carina Alden
Version 2 submitted on 2026-07-27T19:50Z 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 -36.0 13.0 402.0 S 16.0 2026-07-24T01:19Z Parameters based on best fit of features seen in STEREO A COR2 and SOHO LASCO C3. 1: Result 1 (2.0 AU)
2026-07-24T00:36Z Carina Alden on 2026-07-24T00:45Z



All directly linked activities:
2026-07-23T14:46:00-FLR-001
FLR Type: C2.7


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