💾 Archived View for radia.bortzmeyer.org › presto › 2020-11-30.gmi captured on 2023-09-08 at 16:09:56. Gemini links have been rewritten to link to archived content
⬅️ Previous capture (2023-06-14)
-=-=-=-=-=-=-
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.