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Interplanetary Shock (or CME Arrival)
Catalog: M2M_CATALOG
Location: Earth
Event Time: 2026-07-21T10:05Z ( SOLAR-1: MAG )
All Detecting Spacecrafts:
SOLAR-1: MAG
ACE: SWEPAM
ACE: MAG
SOLAR-1: SWiPS
Activity ID: 2026-07-21T10:05:00-IPS-001 (version 1)
Quality of ICME Signature: -1 (unspecified)
Note: Signature characterized by jump in B_total from ~8nT to ~17nT. The sharp jump in B_total is accompanied by a jump in solar wind speed from ~325 km/s to ~400 km/s and a jump in temperature from ~215k K to ~590k K. The jump in B_total was preceded by two smaller increases in magnetic field. The first began at 2026-07-20T22:46Z, and the second, more gradual increase began around 2026-07-21T06:02Z. The second increase in B_total was also accompanied by an increase in temperature prior to the larger jump in temperature associated with the third (2026-07-21T10:05Z) increase in B_total. Density has been steadily increasing starting as early as 2026-07-20T12:18Z. This signature is still developing and is under analysis.
Version 1 submitted on 2026-07-21T11:50Z by Elizabeth Juelfs
Version 2 submitted on 2026-07-22T23:06Z by Mattie Anastopulos
	
A Notification with ID 20260721-AL-002 was sent on 2026-07-21T11:56Z

All directly linked activities:
2026-07-21T10:11:00-HSS-001


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