DONKI Header

CCMC DONKI

DONKI: Menu Page

Go to:

 DONKI: View SW Activity
CME Analysis Information (for CME activity ID: 2021-08-28T07:00:00-CME-001)
Measurement Creation Time: 2021-08-28T17:21Z
Catalog: M2M_CATALOG
Data Level: 0 (0=real-time, 1=real-time and checked by supervising forecaster, 2=retrospective science level data analysis)
Use as primary measurement: true
Measurement Technique: SWPC_CAT
Detecting Instruments:
SOHO: LASCO/C2
STEREO A: SECCHI/COR2
Image Type: running difference
Speed (km/s): 261.0
Speed measured at height (Rs): None Entered
Type: S
Direction (LON/LAT in HEEQ): -2.0/ -10.0
Half Angular Width (degree): 45.0
Minor Half-width (degree): None Entered
Tilt (degree): None Entered
Time@21.5: 2021-08-28T20:11Z
Info/Session URL: None Entered
Note: 
The CME is very wide and appears as a faint partial halo in SOHO LASCO C2. It is difficult to track as it propagates outward in SOHO LASCO C2 since it fades into the background in difference imagery and therefore is not very visible in SOHO LASCO C3 difference imagery. The speeds of this CME range from 250-350km/s when measured depending on the feature tracked as well as the half-width used.
Measurement Feature Code(s):
LE: Leading Edge
General Keyword(s):
Version 1 submitted on 2021-08-28T17:21Z by Carina Alden
No Notification has been sent for this activity yet.

The List of WSA-ENLIL Results:
Model Name Model Completion Time AU CME Input(s) Predicted Earth Impact Predicted Other Location(s) Impact
WSA-ENLIL+Cone 2021-08-28T17:43Z 2.0
Earth Shock Arrival Time = 2021-09-02T00:00Z (Glancing Blow)
Possible Kp index:
(kp)90=2
(kp)135=3
(kp)180=3
 STEREO B = 2021-08-31T12:00Z

All directly linked activities:
2021-08-28T07:00:00-CME-001


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