Solar alert

Issued on 2024 Feb 10 1328 UTC

A strong and fast almost full halo coronal mass ejection (CME) was first detected in the LASCO/C2 coronagraph imagery around 04:24 UTC on Feb 10th. Strong coronal wave and dimming related to this event are visible in the SDO/AIA data. The eruption was related to an activity behind at the east limb. Based on the source location currently no impact on Earth is expected.

Issued on 2024 Feb 10 1334 UTC

A weak shock was detected in the solar wind data (ACE and DSCOVR) around 21:47 UTC on Feb 9th. The interplanetary magnetic field mildly increased from 7 nT to 9.3 nT and the solar wind speed jumped from 395 km/s to 503 km/s.The solar wind density at the shock showed slight decrease and the temperature jumped from about 2.4e4 K to 3.6e5 K. The shock is related to an expected weak glancing blow ICME arrival related to the Feb 6th filament eruption and associated CME. The solar wind velocity has since steadily declined to below 400 km/s at present. The solar wind parameters are expected to be at slightly perturbed to nominal levels until next possible glancing blow arrival anticipated on Feb 12th.

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