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Updated 2022-07-19 13:03:58 UTC

M 5.6 — 20 km ENE of Namie, Japan

Magnitude 5.6, depth 55.6 km, 2011-04-21 16:11:18 UTC.

MagnitudeM 5.6
Depth55.6 km
Felt reports6
Statusreviewed
TsunamiNo

Japan → · Namie →

Quake Pulse Activity Index

Activity trend

A high index means recent activity is high relative to the selected historical baseline. It does not mean that a larger earthquake is about to occur.

Quake Pulse Activity Index51/100Normal
Current 30 days42
Historical monthly median41.5
Historical percentileP51
M5+ in 30 days9
M6+ in 30 days1
Activity trendaround the historical range (+1%)
Baseline months: 60Last calculation: 2026-09-03 06:17:39How the index works →
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What to know

A short factual reading of this event from the available observations.

  • Magnitude M 5.6 at 55.6 km depth.
  • 6 felt report(s) are associated with the USGS record.
Counts describe detected earthquakes and are not a forecast or hazard assessment.
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Within the Quake Pulse database

Long-term comparisons are more robust at higher magnitudes because small-earthquake detection capability has changed over time.

Magnitude rank in database#8,210
Magnitude rank in country#700
M4.5+ within 250 km, ±15 days272
Sequence context138 events →
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Impact and context

Descriptive indicators available for this event and its surroundings.

30/100Moderate context
Felt reports6
Max felt intensity (CDI)4.3
Instrumental intensity (MMI)4.0
PAGER alertNot available
Tsunami indicator—
USGS significance485
Depth contextShallow
Nearby major cityTokyo248 km · 14,000,000

Nearby major city

Tokyo248 km · 14,000,000

Displayed population is the indexed city population, not an estimate of people exposed.

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These indicators describe data available after detection. They are neither a forecast nor a direct estimate of damage or individual risk.

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Around this epicenter

Nearby events observed around this epicenter. Spatial proximity does not necessarily mean they belong to the same sequence.

50 km100 km250 km
M 5.6 · 20 km ENE of Namie, Japan · 100 kmInteractive 3D view of earthquakes within 100 km of M 5.6 · 20 km ENE of Namie, Japan.M 5.6 · 20 km ENE of Namie, JapanM 4.6 · 50 km SE of Namie, Japan · 44.5 kmM 4.5 · 76 km ESE of Ishinomaki, Japan · 96.8 kmM 5.1 · 36 km E of Namie, Japan · 21.3 kmM 4.7 · 104 km SE of Ishinomaki, Japan · 94.5 kmM 4.8 · 32 km ESE of Ishinomaki, Japan · 96.2 kmM 4.8 · 98 km SE of Ishinomaki, Japan · 81.3 kmM 4.5 · 16 km NNW of Kitaibaraki, Japan · 84.8 kmM 4.6 · 50 km SE of Namie, Japan · 42.6 kmM 4.5 · 1 km N of Kitaibaraki, Japan · 93.8 kmM 4.5 · 46 km ESE of Ishinomaki, Japan · 86.4 kmM 4.8 · 14 km ESE of Namie, Japan · 15.6 kmM 5.0 · 40 km ENE of Namie, Japan · 20.0 kmM 4.6 · 13 km ESE of Namie, Japan · 14.2 kmM 4.5 · 66 km ESE of Namie, Japan · 53.2 kmM 4.6 · 63 km ESE of Namie, Japan · 48.8 kmM 6.1 · 31 km ESE of Namie, Japan · 20.5 kmM 4.6 · 98 km E of Iwaki, Japan · 89.8 kmM 4.8 · 42 km ENE of Namie, Japan · 21.7 kmM 4.5 · 8 km E of Iwaki, Japan · 58.5 kmM 4.6 · 18 km ESE of Ishikawa, Japan · 70.0 kmM 5.2 · 11 km WNW of Iwaki, Japan · 67.5 kmM 5.0 · 40 km E of Namie, Japan · 24.7 kmM 4.5 · 85 km SE of Ishinomaki, Japan · 70.7 kmM 4.5 · 20 km S of Ishikawa, Japan · 96.4 kmM 4.5 · 36 km E of Namie, Japan · 18.7 kmM 4.5 · 37 km SE of Namie, Japan · 36.6 kmM 4.7 · 51 km ENE of Namie, Japan · 31.2 kmM 4.6 · 11 km ESE of Namie, Japan · 14.8 kmM 4.8 · 41 km SE of Iwaki, Japan · 81.2 kmM 4.8 · 27 km E of Kitaibaraki, Japan · 90.3 kmM 4.7 · 20 km ESE of Namie, Japan · 18.5 kmM 5.1 · 28 km E of Kitaibaraki, Japan · 86.5 kmM 5.5 · near the east coast of Honshu, Japan · 39.8 kmM 5.0 · 42 km SE of Ishinomaki, Japan · 76.6 kmM 4.9 · 26 km SE of Namie, Japan · 28.1 kmM 4.6 · 77 km ESE of Iwaki, Japan · 98.8 kmM 4.6 · 55 km SE of Ishinomaki, Japan · 67.1 kmM 4.9 · 9 km SE of Ishikawa, Japan · 81.1 kmM 4.5 · 30 km SE of Namie, Japan · 32.6 kmM 5.2 · 21 km NNE of Iwaki, Japan · 41.7 kmM 4.6 · 82 km ESE of Namie, Japan · 67.1 kmM 5.0 · 113 km ESE of Namie, Japan · 96.3 kmM 4.7 · 38 km SE of Ishinomaki, Japan · 82.7 kmM 4.8 · 10 km S of Ishikawa, Japan · 87.2 kmM 4.6 · 22 km ENE of Iwaki, Japan · 50.9 kmM 4.6 · 14 km NE of Kitaibaraki, Japan · 80.1 kmM 4.6 · 8 km S of Ishikawa, Japan · 86.7 kmM 4.5 · 5 km ENE of Ishikawa, Japan · 76.3 kmM 4.5 · 46 km E of Namie, Japan · 30.6 kmM 4.9 · 22 km E of Iwaki, Japan · 59.8 kmM 4.6 · 4 km NE of Iwaki, Japan · 59.1 kmM 4.7 · eastern Honshu, Japan · 74.3 kmM 4.6 · 25 km ESE of Namie, Japan · 14.4 kmM 4.7 · 5 km NW of Iwaki, Japan · 61.0 kmM 4.6 · 47 km ENE of Namie, Japan · 26.6 kmM 4.6 · 19 km E of Namie, Japan · 8.8 kmM 4.8 · 22 km SSW of Namie, Japan · 38.6 kmM 4.5 · 2 km WNW of Iwaki, Japan · 63.3 kmM 5.1 · 22 km SE of Ishikawa, Japan · 83.5 kmM 4.5 · 21 km S of Ishikawa, Japan · 92.7 kmM 4.5 · 36 km E of Iwaki, Japan · 52.4 kmM 5.3 · 21 km NNE of Daigo, Japan · 97.4 kmM 4.6 · 110 km E of Namie, Japan · 92.1 kmM 4.7 · 46 km ESE of Ishinomaki, Japan · 93.9 kmM 4.6 · 18 km S of Ishikawa, Japan · 92.7 kmM 4.5 · 18 km E of Ishikawa, Japan · 69.1 kmM 4.8 · 8 km SSW of Ishikawa, Japan · 87.8 kmM 4.5 · 19 km WNW of Iwaki, Japan · 70.5 kmM 4.6 · 58 km E of Kitaibaraki, Japan · 94.3 kmM 4.7 · 20 km ESE of Ishikawa, Japan · 74.6 kmM 5.9 · 8 km WSW of Ishikawa, Japan · 90.1 kmM 4.6 · 19 km SSW of Ishikawa, Japan · 96.4 kmM 4.6 · 39 km ESE of Namie, Japan · 32.1 kmM 4.5 · 16 km S of Ishikawa, Japan · 89.5 kmM 4.8 · 17 km SSE of Ishikawa, Japan · 87.4 kmM 4.5 · 19 km SSW of Ishikawa, Japan · 96.7 kmM 4.5 · 21 km SSE of Ishikawa, Japan · 85.1 kmM 4.5 · 17 km S of Ishikawa, Japan · 90.0 kmM 4.9 · 11 km SSW of Ishikawa, Japan · 92.0 kmM 4.5 · 17 km WSW of Iwaki, Japan · 78.5 kmM 4.8 · 9 km SSE of Ishikawa, Japan · 83.8 kmM 4.6 · 23 km SSE of Ishikawa, Japan · 87.5 kmM 5.5 · 20 km SSW of Ishikawa, Japan · 99.5 kmM 4.7 · 10 km SE of Ishikawa, Japan · 80.3 kmM 4.5 · 19 km NNW of Kitaibaraki, Japan · 85.6 kmM 4.5 · 18 km W of Iwaki, Japan · 74.9 kmM 4.7 · 16 km SE of Ishikawa, Japan · 80.0 kmM 4.7 · 20 km NW of Kitaibaraki, Japan · 87.8 kmM 4.8 · 19 km SE of Ishikawa, Japan · 77.4 kmM 4.8 · 21 km NNE of Daigo, Japan · 97.2 kmM 4.7 · 16 km S of Ishikawa, Japan · 90.5 kmM 4.7 · 19 km NE of Daigo, Japan · 97.4 kmM 4.9 · 12 km S of Ishikawa, Japan · 89.1 kmM 4.7 · 15 km ESE of Ishikawa, Japan · 76.3 kmM 5.0 · 15 km SSW of Ishikawa, Japan · 95.1 kmM 4.7 · 1 km WSW of Ishikawa, Japan · 82.7 kmM 4.5 · 12 km N of Kitaibaraki, Japan · 82.8 kmM 4.7 · 14 km S of Ishikawa, Japan · 91.1 kmM 5.2 · 13 km SW of Ishikawa, Japan · 94.1 kmM 5.8 · 14 km SSE of Marumori, Japan · 44.5 km
M 5.6 · 20 km ENE of Namie, Japan100 km100 Recent earthquakes

Descriptive map centered on the epicenter; it does not represent felt intensity or risk.

Sequence context

This event belongs to a sequence detected by Quake Pulse.

Open sequence →

Nearby events · 100 km

M 4.650 km SE of Namie, Japan44.5 km · 2011-05-21 10:24:44 UTCM 4.576 km ESE of Ishinomaki, Japan96.8 km · 2011-05-20 23:43:20 UTCM 5.136 km E of Namie, Japan21.3 km · 2011-05-20 07:28:48 UTCM 4.7104 km SE of Ishinomaki, Japan94.5 km · 2011-05-20 00:10:12 UTCM 4.832 km ESE of Ishinomaki, Japan96.2 km · 2011-05-19 08:32:49 UTCM 4.898 km SE of Ishinomaki, Japan81.3 km · 2011-05-18 23:17:30 UTCM 4.516 km NNW of Kitaibaraki, Japan84.8 km · 2011-05-18 13:32:46 UTCM 4.650 km SE of Namie, Japan42.6 km · 2011-05-18 07:23:55 UTC
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USGS data evolution

Earthquake parameters can be revised after first publication. This timeline shows versions retained by Quake Pulse.

Revisions1
Magnitude change+0.0M 5.6 → M 5.6
Depth change+0.0 km
Last update2223816 min
2022-07-19 13:03:58 UTC2022-07-19 13:03:58 UTC

Explore related context

Related or nearby earthquakes

M 4.5 · 2 km S of Namie, Japan22 km · 2026-03-10 06:28:04 UTCM 4.7 · 42 km ENE of Namie, Japan22 km · 2026-05-07 23:31:16 UTCM 4.6 · 49 km E of Minami-Sōma, Japan28 km · 2026-09-14 10:59:54 UTCM 4.7 · 16 km SSE of Tomioka, Japan39 km · 2026-08-15 01:10:51 UTC

Geographic context

CountryJapan →Nearby cityNamie →Seismic sequenceM 5.6 →

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Putting this earthquake in context

An earthquake record can change after the first automatic publication as additional stations contribute data and analysts refine the solution.

Interpret the numbers

Magnitude, depth, felt reports and status describe different parts of the event. None of them alone predicts the consequences for a specific city.

Important limits

If the earthquake creates a safety concern, follow local authorities and official warning channels rather than relying on a public data website.

Read the methodology →

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