Solar alert

Issued on 2021 Oct 11 1528 UTC

A halo coronal mass ejection has been observed in the available SOHO/LASCO coronagraph imagery at 07:24 on Oct 9. This halo coronal mass ejection is associate with the M1.6-class flare peaking at 06:38 UTC on the same day in the Catania sunspots group 58 (NOAA AR-2882), which was located on the central meridian. The projected speed was measured 692 km/s by the software package CACTus. The true speed has been estimated around 950 km/s. The transit time to Earth is estimated to take about 62 hours, ant the arrival to Earth time would be on Oct 12, around 01:00 UTC.

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