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Japan · Nagano Prefecture

M3.2 Earthquake near Chikuhoku, Nagano Prefecture (Japan)

UTC time: 2026-07-21 20:45:30 UTC Local time: —

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About this earthquake

On July 21, 2026 at 20:45 UTC, a magnitude M3.2 earthquake occurred near Chikuhoku, Nagano Prefecture (Japan). Shaking of this size is frequently noticed but usually harmless.

The data is provided by EMSC and cross-checked across seismological networks. Japan: 3 earthquakes were recorded in the past 24 hours, the strongest reaching M5.1.

Details

ID
e8aa0597007044a90d3326414538cdaa9a7c82b2
Magnitude
M3.2
Depth
0.0 km
UTC time
2026-07-21 20:45:30 UTC
Local time
—
Country
Japan
State
Nagano Prefecture
City
Chikuhoku
County
Higashichikuma County
Village
Chikuhoku
Source
emsc
Coordinates
36.40000, 138.00000
Temperature
20.8°C

Depth profile

Depth profile Depth: 0 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 0 km
Shallow
0 km
0 km — shallower than the regional average (33.1 km)
Regional average: 33.1 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Volcanoes nearby

  • Midagahara
    Distance: 41 km ·Stratovolcano ·Elevation: 2'621 m ·Last eruption: 1839 ·Japan
  • Yakedake
    Distance: 42 km ·Stratovolcano(es) ·Elevation: 2'455 m ·Last eruption: 1995 ·Japan
  • Akandanayama
    Distance: 44 km ·Stratovolcano ·Elevation: 2'109 m ·Japan
  • Yokodake
    Distance: 45 km ·Stratovolcano(es) ·Elevation: 2'480 m ·Last eruption: 1200 ·Japan
  • Asamayama
    Distance: 47 km ·Complex ·Elevation: 2'568 m ·Last eruption: 2019 ·Japan
  • Norikuradake
    Distance: 52 km ·Stratovolcano(es) ·Elevation: 3'026 m ·Last eruption: -50 ·Japan

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Shinshu-Matsumoto AirportJapan · MMJ · RJAF
    26.8 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-21

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Japan

Context for this earthquake

21 Sep 2025 – 21 Sep 2026 · M ≥ 3.0 · 951 Catalogue entries

Of 950 other entries for this area and period, 663 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · Japan

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · Japan

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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