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High Speed Stream
Catalog: M2M_CATALOG
Event Time: 2025-09-14T19:10Z ( ACE: SWEPAM )

All Detecting Spacecrafts:

ACE: SWEPAM

ACE: MAG

Activity ID: 2025-09-14T19:10:00-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: 2025-09-06
Note: Characterized by an increase in solar wind speeds (approx. 362km/s to approx. 650km/s), increase in temperature (approx. 88kK to 400kK) and a decrease in density (approx. 54p/cc to 4.5p/cc). This coronal hole high speed stream signature was preceded by an IPS beginning at 2025-09-14T13:57Z, and may also be combined with the arrival of CME: 2025-09-11T08:53Z.

Version 1 submitted on 2025-09-14T23:55Z by Melissa Kane

No Notification has been sent for this activity yet.

All directly linked activities:

2025-09-14T13:57:00-IPS-001
Location: Earth

2025-09-15T00:00:00-GST-001
NOAA Kp: 6.67 (2025-09-15T03:00Z)

2025-09-16T10:55:00-RBE-001

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