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Issued on 2021 Sep 14 1549 UTC
A partial halo CME detected by COR2/STEREO-A and LASCO-C2/SOHO at Sep 13 12:00 UT. It is associated with the eruption of a long filament that extended from the North to the North West of the solar disk. The CME has a projected velocity of 300 km/s and an angular width of approximately 300 degrees. It is expected to arrive on Earth late on 18 Sep.
Issued on 2021 Sep 14 1627 UTC
A CME was detectable in SOHO/LASCO C2 images during the night of Sept 5th/early morning of Sept 6th. It is associated with a plage (or possibly an active region) that currently rotates into Earth's view. Although there is a small chance that this CME will become geo-effective, it is unlikely that its arrival will be seen in the solar wind parameters. This is because a much brighter partial halo CME erupted a few hours earlier with a similar velocity and the two CMEs will most probably merge together.
Issued on 2021 Sep 14 1729 UTC
A partial halo CME was visible in STEREO-A/COR2 and SOHO/LASCO C2 images, from 13 Sep 12:00 UT onwards. It is associated with the eruption of a long filament spanning from the north to the north west of the solar disk. The CME has a projected velocity of approximately 300 km/s and is expected to arrive on 18 Sep.