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High Speed Stream
Catalog: M2M_CATALOG
Event Time: 2026-07-09T11:25Z ( SOLAR-1: MAG )

All Detecting Spacecrafts:

SOLAR-1: MAG

ACE: SWEPAM

ACE: MAG

SOLAR-1: SWiPS

IMAP: MAG

IMAP: SWAPI

Activity ID: 2026-07-09T11:25:00-HSS-001 (version 1)
Event End Time:
Peak Solar Wind Speed (km/s):
Date of first appearance of coronal hole in EUV at east limb:
Note: Characterized by an increase in solar wind speed from ~400 km/s to >500 km/s, a sudden jump in solar wind temperature from ~100k Kelvin to ~550k Kelvin, and an increase in solar wind density prior to the increases in solar wind speed and temperature. The solar wind magnetic field parameters show a slow increase in B_total above 10nT. The associated coronal hole is seen crossing the central meridian in SDO AIA 193 on 2026-07-06.

Version 1 submitted on 2026-07-09T17:22Z by Carina Alden
Version 2 submitted on 2026-07-11T19:29Z by Tony Iampietro

No Notification has been sent for this activity yet.

All directly linked activities:

2026-07-10T11:15:00-RBE-001

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