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Updated 2014-11-07 01:44:18 UTC

M 4.8 — 84 km E of Namie, Japan

Magnitude 4.8, depth 9.2 km, 2011-03-23 14:48:07 UTC.

MagnitudeM 4.8
Depth9.2 km
Felt reports—
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 →
Quake Pulse

What to know

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

  • Magnitude M 4.8 at 9.2 km depth.
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#64,293
Magnitude rank in country#5,043
M4.5+ within 250 km, ±15 days1,794
Sequence context1168 events →
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Impact and context

Descriptive indicators available for this event and its surroundings.

11/100Limited context
Felt reports—
Max felt intensity (CDI)—
Instrumental intensity (MMI)—
PAGER alertNot available
Tsunami indicator—
USGS significance354
Depth contextShallow
Nearby major cityTokyo290 km · 14,000,000

Nearby major city

Tokyo290 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 4.8 · 84 km E of Namie, Japan · 100 kmInteractive 3D view of earthquakes within 100 km of M 4.8 · 84 km E of Namie, Japan.M 4.8 · 84 km E of Namie, JapanM 4.6 · 82 km ESE of Namie, Japan · 31.5 kmM 5.6 · 20 km ENE of Namie, Japan · 64.3 kmM 5.0 · 70 km E of Ishinomaki, Japan · 86.2 kmM 5.0 · 113 km ESE of Namie, Japan · 42.1 kmM 4.7 · 38 km SE of Ishinomaki, Japan · 77.1 kmM 4.6 · 22 km ENE of Iwaki, Japan · 88.6 kmM 4.6 · 122 km ESE of Ishinomaki, Japan · 76.5 kmM 4.5 · 46 km E of Namie, Japan · 42.2 kmM 4.9 · 22 km E of Iwaki, Japan · 94.0 kmM 4.6 · 25 km ESE of Namie, Japan · 60.0 kmM 4.5 · 60 km ESE of Ishinomaki, Japan · 78.5 kmM 4.6 · 47 km ENE of Namie, Japan · 42.9 kmM 5.0 · 128 km ESE of Namie, Japan · 56.3 kmM 4.6 · 19 km E of Namie, Japan · 64.7 kmM 4.8 · 22 km SSW of Namie, Japan · 94.5 kmM 4.5 · 81 km E of Ishinomaki, Japan · 84.3 kmM 4.5 · 36 km E of Iwaki, Japan · 78.5 kmM 4.7 · 129 km ESE of Namie, Japan · 67.5 kmM 4.6 · 110 km E of Namie, Japan · 33.5 kmM 4.7 · 46 km ESE of Ishinomaki, Japan · 79.4 kmM 4.5 · off the east coast of Honshu, Japan · 76.8 kmM 4.6 · 39 km ESE of Namie, Japan · 59.4 kmM 4.7 · 44 km E of Ishinomaki, Japan · 92.2 kmM 4.5 · 137 km E of Namie, Japan · 53.2 kmM 4.5 · 101 km ESE of Ishinomaki, Japan · 76.1 kmM 4.7 · 132 km SE of Ishinomaki, Japan · 56.4 kmM 4.9 · 19 km E of Namie, Japan · 64.9 kmM 4.6 · 118 km ESE of Namie, Japan · 51.3 kmM 4.5 · 53 km SE of Namie, Japan · 56.2 kmM 4.5 · 47 km ESE of Ishinomaki, Japan · 81.7 kmM 4.6 · 47 km E of Ishinomaki, Japan · 87.7 kmM 5.3 · 38 km ESE of Ishinomaki, Japan · 82.9 kmM 5.1 · 109 km ESE of Iwaki, Japan · 90.5 kmM 4.7 · 62 km ESE of Namie, Japan · 47.4 kmM 4.5 · 100 km SE of Ishinomaki, Japan · 47.0 kmM 4.5 · 55 km ESE of Ishinomaki, Japan · 81.0 kmM 4.7 · 119 km ESE of Iwaki, Japan · 99.5 kmM 4.7 · 110 km ESE of Iwaki, Japan · 95.7 kmM 4.6 · 86 km ESE of Ishinomaki, Japan · 77.7 kmM 4.5 · 52 km ESE of Ishinomaki, Japan · 72.6 kmM 4.5 · 69 km ESE of Namie, Japan · 34.1 kmM 4.7 · 101 km ESE of Ishinomaki, Japan · 67.9 kmM 4.6 · 50 km SE of Ishinomaki, Japan · 64.9 kmM 4.7 · 53 km ESE of Ishinomaki, Japan · 69.8 kmM 7.1 · 29 km ESE of Ishinomaki, Japan · 85.6 kmM 4.5 · 78 km ENE of Namie, Japan · 13.8 kmM 4.6 · 110 km ESE of Ishinomaki, Japan · 64.5 kmM 4.7 · 47 km ESE of Namie, Japan · 50.8 kmM 4.8 · 76 km E of Ishinomaki, Japan · 86.9 kmM 5.3 · 42 km ENE of Namie, Japan · 47.2 kmM 4.9 · 121 km E of Namie, Japan · 44.0 kmM 4.6 · 76 km E of Ishinomaki, Japan · 89.6 kmM 4.7 · 112 km ESE of Iwaki, Japan · 94.7 kmM 5.0 · 70 km E of Ishinomaki, Japan · 91.3 kmM 4.6 · 77 km E of Ishinomaki, Japan · 93.1 kmM 4.7 · 53 km ESE of Ishinomaki, Japan · 77.1 kmM 4.6 · 53 km E of Namie, Japan · 30.8 kmM 5.1 · 103 km E of Iwaki, Japan · 57.5 kmM 5.0 · 121 km ESE of Ishinomaki, Japan · 55.0 kmM 5.1 · 117 km SE of Ishinomaki, Japan · 49.2 kmM 4.7 · 76 km E of Ishinomaki, Japan · 84.8 kmM 5.0 · 101 km SE of Ishinomaki, Japan · 33.1 kmM 4.9 · 91 km SE of Ishinomaki, Japan · 38.0 kmM 5.1 · 116 km ESE of Iwaki, Japan · 90.4 kmM 4.8 · 130 km ESE of Namie, Japan · 61.2 kmM 4.9 · 35 km SE of Namie, Japan · 65.5 kmM 4.7 · 68 km E of Ishinomaki, Japan · 90.1 kmM 4.5 · 60 km ENE of Namie, Japan · 29.3 kmM 5.2 · 43 km ENE of Namie, Japan · 44.6 kmM 4.9 · 110 km ESE of Iwaki, Japan · 88.0 kmM 4.5 · 85 km E of Ishinomaki, Japan · 86.8 kmM 4.5 · 135 km E of Iwaki, Japan · 82.7 kmM 5.1 · 91 km ESE of Iwaki, Japan · 93.7 kmM 4.5 · 78 km E of Ishinomaki, Japan · 97.2 kmM 4.6 · 83 km E of Ishinomaki, Japan · 98.2 kmM 4.5 · 56 km ESE of Ishinomaki, Japan · 74.0 kmM 4.6 · 91 km E of Namie, Japan · 18.6 kmM 5.1 · 114 km ENE of Namie, Japan · 32.5 kmM 4.5 · 29 km ESE of Iwaki, Japan · 97.4 kmM 4.6 · 102 km ESE of Ishinomaki, Japan · 69.6 kmM 4.5 · 87 km E of Ishinomaki, Japan · 89.0 kmM 4.5 · 122 km E of Iwaki, Japan · 82.4 kmM 4.7 · 78 km ESE of Iwaki, Japan · 89.2 kmM 4.6 · 65 km ESE of Ishinomaki, Japan · 72.4 kmM 4.6 · 77 km ENE of Namie, Japan · 20.4 kmM 4.5 · 98 km ENE of Namie, Japan · 18.5 kmM 4.6 · 59 km ESE of Namie, Japan · 46.4 kmM 4.6 · 81 km E of Ishinomaki, Japan · 87.1 kmM 4.6 · 28 km ESE of Namie, Japan · 59.8 kmM 4.9 · 138 km SE of Ishinomaki, Japan · 58.3 kmM 4.8 · 138 km E of Namie, Japan · 60.9 kmM 4.6 · 138 km SE of Ishinomaki, Japan · 61.0 kmM 4.5 · 135 km ESE of Namie, Japan · 60.7 kmM 4.6 · 100 km ESE of Iwaki, Japan · 98.0 kmM 4.7 · 107 km ESE of Ishinomaki, Japan · 63.0 kmM 4.7 · 144 km ESE of Namie, Japan · 71.2 kmM 4.5 · 140 km E of Namie, Japan · 61.6 kmM 4.6 · 141 km E of Namie, Japan · 59.9 kmM 6.1 · 114 km E of Namie, Japan · 35.0 kmM 4.8 · 19 km E of Namie, Japan · 64.4 km
M 4.8 · 84 km E 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 4.682 km ESE of Namie, Japan31.5 km · 2011-04-22 08:42:40 UTCM 5.620 km ENE of Namie, Japan64.3 km · 2011-04-21 16:11:18 UTCM 5.070 km E of Ishinomaki, Japan86.2 km · 2011-04-21 08:18:16 UTCM 5.0113 km ESE of Namie, Japan42.1 km · 2011-04-21 03:08:37 UTCM 4.738 km SE of Ishinomaki, Japan77.1 km · 2011-04-20 16:33:21 UTCM 4.622 km ENE of Iwaki, Japan88.6 km · 2011-04-19 19:29:24 UTCM 4.6122 km ESE of Ishinomaki, Japan76.5 km · 2011-04-17 17:34:20 UTCM 4.546 km E of Namie, Japan42.2 km · 2011-04-17 16:48:01 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 4.8 → M 4.8
Depth change+0.0 km
Last update6271561 min
2014-11-07 01:44:18 UTC2014-11-07 01:44:18 UTC

Explore related context

Related or nearby earthquakes

M 4.5 · 91 km E of Namie, Japan9 km · 2026-09-21 22:29:59 UTCM 4.7 · 77 km E of Tomioka, Japan33 km · 2026-08-25 20:23:36 UTCM 4.6 · 49 km E of Minami-Sōma, Japan37 km · 2026-09-14 10:59:54 UTCM 4.5 · 62 km E of Tomioka, Japan39 km · 2026-07-22 11:11:31 UTC

Geographic context

CountryJapan →Nearby cityNamie →Seismic sequenceM 4.8 →

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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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