2003 Miyagi earthquakes
| UTC time | 2003-05-26 09:24:33 |
|---|---|
| 2003-07-25 22:13:29 | |
| ISC event | 6849185 |
| 7006322 | |
| USGS-ANSS | ComCat |
| ComCat | |
| Local date | May 26, 2003 |
| July 26, 2003 | |
| Local time | 18:24:33 JST (UTC+9) |
| 07:13:29 JST (UTC+9) | |
| Magnitude | Mw 7.0, MJMA 7.1 |
| Mw 6.0, MJMA 6.4 | |
| Depth | 68.0 km (42.3 mi) |
| 6 km (3.7 mi) | |
| Fault | Asahiyama flexure (July 26) |
| Type | Oblique-reverse |
| Total damage | ¥92.9 billion (US$644 million, equivalent to $1.12 billion in 2025) |
| Max. intensity | JMA 6+ (MMI IX) |
| Peak acceleration | 1.134 g (May 26) 2.08 g (July 26) |
| Peak velocity | 60.13 cm/s (May 26) |
| Landslides | Yes |
| Aftershocks | 27 ≥Mw 4.0 (May 26) |
| Casualties | 851 injuries |
Two major earthquakes struck Miyagi Prefecture in Japan in 2003. The first event measured MJMA 7.1, had a near-intermediate depth of 68 km (42 mi) and struck the town of Kesennuma, near the border with Iwate Prefecture, injuring 174 people in five prefectures, while the second event, despite having a lower magnitude of MJMA 6.4, was much more destructive and intense due to occurring much closer to the surface at 6 km (3.7 mi), injuring nearly 680 people across multiple towns near Sendai and Ishinomaki in Miyagi. Both events caused moderate damage to infrastructure, triggered landslides, soil liquefaction and other ground effects, and damaged or destroyed 18,488 homes, 5,108 of them severely.