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⬅️ Previous capture (2021-11-30)

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Solar alert

Issued on 2021 May 17 1840 UTC

A weak shock can be seen in DSCOVR data, the magnetic field jumped from 5 to 8 nT and the solar wind speed from 320 to 350 km/s, around 15:45 UT. This could mark the arrival of the CME from May 13. No geomagnetic consequences to report yet.

Reference for this alert

All Presto solar alerts