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High Speed Stream
Catalog: M2M_CATALOG
Event Time: 2026-05-15T08:45Z ( ACE: MAG )

All Detecting Spacecrafts:

ACE: MAG

ACE: SWEPAM

DSCOVR: PLASMAG

Activity ID: 2026-05-15T08:45:00-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: 2026-05-07
Note: Characterized by an increase is solar wind speed (approx. 400km/s to 600nT), as well as an increase in temperature (approx. 25kK to 400kK) and a decrease in density (approx. 20 p/cc to 5p/cc). This signature was preceded by a sharp enhancement in magnetic field components (B_t: approx. 4.2nT to 12.6nT), indicative of a corotating interaction region ahead of this coronal hole high speed stream signature.

Version 1 submitted on 2026-05-15T13:42Z by Melissa Kane

No Notification has been sent for this activity yet.

All directly linked activities:

2026-05-15T07:14:00-IPS-001
Location: Earth

2026-05-15T21:00:00-GST-001
NOAA Kp: 6.33 (2026-05-16T00:00Z)
NOAA Kp: 5.67 (2026-05-16T03:00Z)

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