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⬅️ Previous capture (2021-11-30)
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Issued on 2020 Nov 30 0942 UTC
The M4 flare peaking at 13:11UT December 29, originating from an unnumbered region at
the East limb, was associated with a type II radio burst and EUV wave.
In SoHO/LASCO C2 a corresponding CME is visible from around 13:25UT (the true time of
emergence in C2 view must be in the data gap between 12:48UT and 13:25UT). The CME is
directed well toward to the East of the Sun-Earth line with a projected speed of
around 1500 km/s. While the bulk is directed off the Sun-Earth line the associated
shock wave leaves an asymmetric full halo signature in SoHO/LASCO C2 and C3
imagery.
The bulk of the CME is hence not expected to arrive to Earth but a glancing blow and
arrival of the shock wave is quite possible. That is expected late December 1 or
early December 2.