M4.8 earthquake: Hyuganada Sea
According to JMA, a magnitude 4.8 earthquake struck near Hyuganada Sea on September 21, 2026. It was recorded at 10:38 PM GMT+9 at a depth of 30 km.
Magnitude and location may later be revised by JMA.
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Magnitude
M4.8
Mj · Light
Depth
30 km
Shallow
Time (UTC)
01:38:00 PM
September 21, 2026
Local time
10:38 PM
September 21, 2026 · GMT+9
Nearest towns and cities
The epicenter was about 85 km from Ōita.
- Ōita · 85 km SE
- Miyazaki · 99 km NE
- Kumamoto · 133 km E
- Matsuyama · 152 km SW
- Kōchi · 171 km SW
Earthquakes recorded nearby afterwards
Since this earthquake, 1 earthquake have been recorded within 50 km of the epicenter; the largest was M3.1.
| Time (UTC) | Magnitude | Depth | Location | Distance | Record |
|---|---|---|---|---|---|
| M3.1 | 30 km | Hyuganada Sea | 38 km | JMA |
Earthquake history of the area
From 1990 until this earthquake, 118 earthquakes of magnitude 4.5 or greater were recorded within 100 km of the epicenter. The largest was an M6.8 earthquake on January 13, 2025.
Frequently asked questions
Where was the September 21, 2026 earthquake near Hyuganada Sea?
The earthquake occurred near Hyuganada Sea at 32.600° N, 132.100° E, at a depth of 30 km. The nearest town was Ōita, about 85 km away.
How strong was the earthquake near Hyuganada Sea?
JMA reported a magnitude of Mj 4.8 (light). How strongly it was felt, and any damage, also depend on depth, distance from the epicenter and local ground conditions.
Were there aftershocks after the earthquake near Hyuganada Sea?
Since this earthquake, 1 earthquake have been recorded within 50 km of the epicenter; the largest was M3.1.