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Interplanetary Shock (or CME Arrival)
Catalog: M2M_CATALOG Location: STEREO A Event Time: 2025-02-28T19:32Z ( STEREO A: IMPACT ) Quality of ICME Signature: 1 (lacks some signatures) Note: Complex arrival signature starting around 2025-02-28T19:32Z at STEREO A characterized by an increase in magnetic field strength to near 20 nT shortly before a large data gap lasting until 2025-03-01T03:30Z, when total field rapidly increases to over 30 nT, reaching a peak of 35 nT around 2025-03-01T04:00Z. The density and velocity parameters are characterized by a "pileup" signature with density gradually increasing and velocity relatively stable before the data gap, followed by density quickly dropping off and velocity increasing after the data gap. Also contains a likely solar sector boundary crossing as evidenced by phi angle flip in IMPACT/PLASTIC data. High speed stream starts around 2025-03-01T03:40Z. This signature predominantly looks to be effects of a coronal hole high speed stream and embedded solar sector boundary crossing, but may additionally be associated with a CME arrival. Submitted on 2025-03-01T14:31Z by Chris Stubenrauch No Notification has been sent for this activity yet. |
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