Kumamoto Prefecture struck by magnitude 7.1 quake, tsunami alert issued FAST-MOVING

Kumamoto earthquake magnitude 7.1 tsunami warning power outage TSMC

A magnitude 7.1 earthquake struck Kumamoto Prefecture on 28 July 2026 at a depth of about 10 km. The Japan Meteorological Agency recorded a maximum shindo intensity of 7 in Ueki City and Hikawa Town. A tsunami warning for waves up to roughly one metre was issued for the coastal areas of Kumamoto and neighboring Kyushu prefectures.

Power outages affected roughly 48,000 households, and multiple injuries were reported as fire departments received numerous emergency calls. JR Kyushu suspended several train services, including Shinkansen, while Kyushu Electric Power confirmed no anomalies at the Sendai and Genkai nuclear plants. Kumamoto Airport’s runway was closed.

Taiwan Semiconductor Manufacturing Company’s Japan Advanced Semiconductor Manufacturing (JASM) facilities lie within the alert zone; the company's ADR shares fell 3.46 % in pre‑market trading as the market assessed possible supply‑chain impacts.

Entities: JR Kyushu · Japan · Japan Meteorological Agency · Kumamoto Prefecture · Kumamoto Prefecture (Japan) · Kyushu Electric Power · Sanae Takaichi · Taiwan Semiconductor Manufacturing Company · Taiwan Semiconductor Manufacturing Company (TSMC)

Claims

What the coverage asserts, and how well corroborated each claim is across sources.

[○ 1 SOURCE] TSMC ADR shares fell 3.46 % in pre‑market trading after the quake. (02ed6a0d-ae79-4d48-a9a8-7a3eff559dbc)
[○ 1 SOURCE] A magnitude 2.2 earthquake was reported in Kumamoto at 17:41 on 28 July. (345be1f3-9a31-4a81-a939-ae978adb5858)
[● 7 SOURCES] A magnitude 7.1 earthquake struck Kumamoto Prefecture on 28 July 2026. (existing)
[● 3 SOURCES] Maximum intensity shindo 7 was recorded in Ueki City and Hikawa Town. (existing)
[● 4 SOURCES] A tsunami warning of up to one metre was issued for Kumamoto's coastal areas. (02ed6a0d-ae79-4d48-a9a8-7a3eff559dbc)
[○ 1 SOURCE] Kumamoto International Airport runway was closed following the earthquake. (b3298742-8667-4485-abf7-27083f8542c0)
[● 2 SOURCES] TSMC's Japan Advanced Semiconductor Manufacturing facilities are within the alert zone, and its ADR shares fell 3.46 % in pre‑market trading. (existing)
[● 5 SOURCES] A tsunami warning for waves up to about one metre was issued for Kumamoto’s coastal areas and neighboring prefectures. (existing)
[● 3 SOURCES] JR Kyushu suspended multiple train services, including Shinkansen, after the quake. (existing)
[● 4 SOURCES] Aftershocks continued to be felt across the region following the main quake. (Seismic monitoring agencies)
[● 5 SOURCES] A magnitude 7.1 earthquake struck Kumamoto Prefecture on Kyushu, Japan on 28 July 2026. (multiple reports)
[● 4 SOURCES] Multiple highway sections in Kumamoto were closed after the earthquake. (Local traffic authorities)