Sun online and solar activity 30.11.2014


FAST WARNING ‘PRESTO’ MESSAGE from the SIDC (RWC-Belgium) 2014 Nov 30 18:52:51 The Presto alert message concerning the partial halo CME, first visible in LASCO/C2 on 28 November at 22:12UT, as reported by CACTus, is erroneous. This 220 degrees wide halo, stretching from the east side of the Sun over north to the west, is actually the result of a complex series of separate CMEs that occurred between noon on 28 November and the morning of 29 November. Most notable were a filament eruption west of the central meridian (afternoon of 28 November) and a prominence eruption at the northeast limb on 29 November around 02:00UT. At least 2 other CMEs were involved, but their source is uncertain. None of these CMEs had an Earth directed component.