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Interplanetary Shock (or CME Arrival)
Catalog: M2M_CATALOG Location: Earth Event Time: 2025-03-23T23:30Z ( DSCOVR: PLASMAG ) Quality of ICME Signature: 2 (clear signatures) Note: Characterized by an initially slow rise in Btotal from 7.12nT to 9.65nT at 2025-03-24T00:16Z, a shock up to 12.44nT at 2025-03-24T00:16Z, and further rise to a peak Btotal of 16.8nT at 2025-03-24T01:14Z. Bz was largely neutral with several periods of sustained southward values around -5 to -10 nT, reaching a peak -9.82 nT at 2025-03-24T01:21Z. Solar wind speed rose from around 360 km/s to 390 km/s, briefly dipped down to around 350 km/s, then rose to a peak of around 430 km/s. Density rose from around 6 p/cc to a peak of 35.3 p/cc at 2025-03-24T04:40Z. Temperature data did not respond much to this arrival signature, remaining largely level. This is likely the late arrival of CME 2025-03-21T16:00Z, anticipated to give Earth a glancing blow at 2025-03-23T07:30Z (+- 7 hours). Submitted on 2025-03-24T18:09Z by Tony Iampietro A Notification with ID 20250324-AL-001 was sent on 2025-03-24T00:56Z |
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