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From the alerts sent by SIDC (Solar Influences Data analysis Center).
Last alert:
Issued on 2024 May 01 0614 UTC
A shock was detected in the solar wind ACE data around 11:34 UTC on April 30. The interplanetary magnetic field increased from 3 nT to 6 nT and the solar wind speed jumped from 380 km/s to 420 km/s. The solar wind density at the shock increased from 4/cm3 to 10/cm3, and the temperature jumped from about 1.4e4 K to 1.02e5 K. The shock is possibly related to an ICME arrival related to a faint slow CME detected in LASCO/C2 data around 11:00 UTC on April 27. Geomagnetic conditions are expected to be disturbed with unsettled to active conditions possible depending on the Bz.
Maintained by Stéphane Bortzmeyer stephane+gemini@bortzmeyer.org from the SIDC data.
Royal Observatory of Belgium
E-mail sidc-support@oma.be
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