Green earthquake (Magnitude 6.1M, Depth:10km) in Japan 03/07/2026 04:04 UTC, 560 thousand in MMI IV

Summary

Single-source GDACS detection — awaiting independent verification. A magnitude 6.1M earthquake at a shallow depth of 10 km was detected in Japan, potentially exposing 560,000 people to MMI IV shaking. The event is classified as medium severity, but without corroborating news reports, the precise location and extent of on-the-ground disruption remain unconfirmed.

Supply chain impact

• If the epicenter is in a major industrial zone, production of semiconductors and electronics could face brief interruptions due to safety shutdowns or power fluctuations, though no specific facility is identified in the inputs.
• Regional logistics serving the East Asia Battery-Cell Manufacturing chokepoint could experience minor delays if transport routes or utilities are affected, with potential second-order effects on battery-metal supply chains for lithium, nickel, and cobalt.
• Copper supply chains may see localized disruption if mining, smelting, or refining operations are within the affected area, but the lack of confirmed news limits any assessment of actual damage.

Watch points

• Aftershock sequences that could extend disruption to manufacturing and logistics nodes in the affected region.
• Official damage assessments or operational status updates from Japanese authorities and major industrial operators.
• Any ripple effects on battery-metal pricing or semiconductor lead times if production downtime is confirmed.