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CME Analysis Information (for CME activity ID: 2021-08-28T07:00:00-CME-001)
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):

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

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