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High Speed Stream
Catalog: M2M_CATALOG Event Time: 2026-02-14T15:30Z ( DSCOVR: PLASMAG ) Event End Time: Peak Solar Wind Speed (km/s): Date of first appearance of coronal hole in EUV at east limb: 2026-02-08 Note: Characterized by a gradual increase in solar wind speed from ~375 km/s at 2026-02-14T15:30Z to as high as 750 km/s at 2026-02-15T12Z. A subsequent amplification of magnetic field is observed with Btotal increasing from 5nT at 2026-02-14T15:30Z to 15nT at 2026-02-14T19:46Z. There is also a rapid fluctuation of magnetic field components indicative of a high speed stream. An increase in temperature is observed alongside the increase in speed, exceeding 600,000 K by the end of 2026-02-14, and an increase in density precedes this signature starting around 2026-02-14T06:00Z. This high speed stream is likely related to a coronal hole spanning N20 to S40 which reached the central meridian on 2026-02-12. Version 1 submitted on 2026-02-14T21:03Z by Mattie Anastopulos Version 2 submitted on 2026-02-16T02:20Z by Anna ChulakiNo Notification has been sent for this activity yet. |
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