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DONKI: View SW Activity
Coronal Mass Ejection
Catalog: M2M_CATALOG
Start Time: 2021-08-28T07:00Z ( SOHO: LASCO/C2 )
All Detecting Spacecrafts:
SOHO: LASCO/C2
SOHO: LASCO/C3
STEREO A: SECCHI/COR2
Activity ID: 2021-08-28T07:00:00-CME-001 (version 1)
Source Location: S28E00
Active Region Number: 12860
Note Keyword:
Faint: Faint event; may affect type assignment
HAL: Halo CME
Source Signature Keyword:
FLR: Flare
PEA: Post eruption arcade
BR: Brightening
DIM: Dimming
EUVW: EUV Wave
Morphology Keyword:
Note: The source is a M4.7 class flare peaking at 2021-08-28T06:11Z from active region 12860 located at S28E00 at the time of the eruption. This eruption is visible in STEREO A EUVI 195 and SDO/AIA wavelengths. An EUV wave is visible in SDO/AIA 193, 171, and 211 starting around 2021-08-28T06:00Z, propagating northward, followed by a post-eruptive arcade starting around 2021-08-28T07:20Z. A dimming region is visible above the brightening active region during the EUV wave. Some plasma material is also visible lifting off during this eruption shortly after the flare peaks.
Submitted on 2021-08-28T17:18Z by Carina
Alden
No Notification has been sent for this activity yet.
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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) |
Submitted By |
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CME Analysis
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M2M_CATALOG |
LE
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true |
SWPC_CAT |
-2.0 |
-10.0 |
261.0 |
S |
45.0 |
2021-08-28T20:11Z |
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. |
1: Result 1 (2.0 AU)
Earth = 2021-09-02T00:00Z
(PE: -30.3 h)
STEREO B = 2021-08-31T12:00Z
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Carina Alden on 2021-08-28T17:21Z |
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