Live earthquake check
Earthquakes near Koga today
Updated
No M2.5+ earthquake within 100 km of Koga in the last 24 hours The last M2.5+ within 100 km was M4.5 56 km SSE, 5 days ago.
Was there an earthquake in Koga just now? This page checks the live USGS catalogue for quakes around Koga, Ibaraki, Japan and updates every few minutes.
- Last 24 hours
- 0 M2.5+ within 100 km
- Last 7 days
- 1 M2.5+ within 100 km
- Last 30 days
- 10 M2.5+ within 100 km
- Largest in 30 days
- M5.3 92 km SE, Oct 1, 2026
- Largest in past year
- M5.8 49 km SE, Aug 22, 2026
- Past year count
- 77 M2.5+ within 150 km
- Nearest in 30 days
- 16 km M4.9, Sep 28, 2026
Recent earthquakes near Koga
USGS recorded 10 earthquakes of magnitude 2.5 or more within 100 km of Koga in the past 30 days, 1 of them in the last 7 days. The most recent was M4.5 56 km SSE of the city at Oct 21, 10:04 local time (5 days ago).
The average depth was about 69 km and 6 of 10 were shallow (under 70 km), which are the ones most likely to be felt at the surface. The busiest day was Oct 7, 2026 with 3 quakes.
| Time (Koga) | UTC | Magnitude | Distance | Depth | Location |
|---|---|---|---|---|---|
| Oct 21, 10:04 | Oct 21, 01:04 UTC | M4.5 | 56 km SSE | 90 km | 2 km N of Honchō, Japan |
| Oct 15, 14:10 | Oct 15, 05:10 UTC | M4.2 | 86 km SSE | 57 km | 9 km W of Ōami, Japan |
| Oct 12, 01:24 | Oct 11, 16:24 UTC | M4.7 | 95 km SE | 67 km | 4 km SE of Narutō, Japan |
| Oct 8, 07:14 | Oct 7, 22:14 UTC | M4.3 | 80 km ENE | 77 km | 3 km SSW of Funaishikawa, Japan |
| Oct 8, 04:36 | Oct 7, 19:36 UTC | M4.6 | 51 km NW | 96 km | 9 km NNE of Midori, Japan |
| Oct 8, 04:13 | Oct 7, 19:13 UTC | M4.9 | 83 km SE | 73 km | 3 km WSW of Shibayama, Japan |
| Oct 2, 06:01 | Oct 1, 21:01 UTC | M4.5 | 19 km SSE | 67 km | 3 km ESE of Sugito, Japan |
| Oct 1, 21:27 | Oct 1, 12:27 UTC | M5.3 | 92 km SE | 42 km | 0 km NNE of Yōkaichiba, Japan |
| Oct 1, 06:16 | Sep 30, 21:16 UTC | M4.4 | 120 km ESE | 35 km | 11 km S of Hasaki, Japan |
| Sep 29, 04:45 | Sep 28, 19:45 UTC | M4.9 | 16 km SSE | 69 km | 5 km S of Sakai, Japan |
| Sep 27, 09:45 | Sep 27, 00:45 UTC | M4.4 | 92 km ESE | 52 km | 2 km E of Omigawa, Japan |
M2.5+ within 150 km, past 30 days, newest first. Times in Asia/Tokyo.
Largest earthquakes near Koga in the past year
The strongest earthquake within 150 km of Koga in the past 12 months was M5.8 on Aug 22, 2026, 49 km SE of the city (3 km E of Fujishiro, Japan).
With 77 M2.5+ earthquakes in a year (about 6.4 a month), the area around Koga is active by global standards. 10 of the ten largest reached M4.5, the level at which damage near the epicentre becomes possible.
| Date | Magnitude | Distance | Depth | Location |
|---|---|---|---|---|
| Aug 22, 2026 | M5.8 | 49 km SE | 61 km | 3 km E of Fujishiro, Japan |
| Jun 26, 2026 | M5.8 | 95 km SE | 43 km | 2 km ESE of Yōkaichiba, Japan |
| Oct 1, 2026 | M5.3 | 92 km SE | 42 km | 0 km NNE of Yōkaichiba, Japan |
| Jun 16, 2026 | M5.3 | 2 km SW | 64 km | 2 km SW of Koga, Japan |
| Jun 26, 2026 | M5.2 | 96 km SW | 35 km | 5 km W of Ōtsuki, Japan |
| Oct 7, 2026 | M4.9 | 83 km SE | 73 km | 3 km WSW of Shibayama, Japan |
| Sep 28, 2026 | M4.9 | 16 km SSE | 69 km | 5 km S of Sakai, Japan |
| Mar 15, 2026 | M4.9 | 43 km WNW | 96 km | 1 km SW of Kiryū, Japan |
| Sep 16, 2026 | M4.8 | 33 km ESE | 87 km | 9 km E of Ishige, Japan |
| Jul 2, 2026 | M4.8 | 126 km NNW | 148 km | 32 km E of Uonuma, Japan |
Was it felt in Koga?
The largest nearby quake this month, M5.3 at 92 km, was probably felt in Koga by a rough rule of thumb (an M3 is typically noticed within a few tens of km, an M5 up to a few hundred km; local ground and building type matter a lot).
USGS "Did You Feel It?" received reports for 5 of these quakes: M4.5 on Oct 21, 2026 (9 reports, max intensity 3); M4.9 on Oct 7, 2026 (4 reports, max intensity 2.7); M4.5 on Oct 1, 2026 (4 reports, max intensity 2.5); M5.3 on Oct 1, 2026 (25 reports, max intensity 3.7).
If you felt shaking, you can report it to USGS; reports refine the intensity map within minutes.
Tsunami warning status
None of the earthquakes near Koga in the past year carried the USGS tsunami flag, which USGS sets for large quakes in oceanic regions where the tsunami warning centres issue messages.
Official tsunami warnings come from the NOAA tsunami warning centres (tsunami.gov) and national agencies; follow local authorities if you are on a coast after strong shaking.
Earthquakes around the world today
Worldwide, USGS listed 154 earthquakes of M1+ in the last 24 hours; the largest was M6.5 Bonin Islands, Japan region.
USGS lists every magnitude in the United States but outside it coverage is complete only from about M4–4.5, so smaller local quakes reported by national agencies may be missing. Magnitudes and locations are revised for hours after an event.
Earthquakes near other cities in Japan and nearby
Earthquake pages
More live data for Koga
Data: USGS Earthquake Hazards Program (ComCat), GeoNames (cities, CC BY 4.0).