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Updated 2014-11-07 01:44:02 UTC

M 4.8 — 153 km SE of Ishinomaki, Japan

Magnitude 4.8, depth 30.7 km, 2011-03-12 11:39:06 UTC.

MagnitudeM 4.8
Depth30.7 km
Felt reports—
Statusreviewed
TsunamiNo

Japan → · Ishinomaki →

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 30.7 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 days1,675
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 cityTokyo348 km · 14,000,000

Nearby major city

Tokyo348 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 · 153 km SE of Ishinomaki, Japan · 100 kmInteractive 3D view of earthquakes within 100 km of M 4.8 · 153 km SE of Ishinomaki, Japan.M 4.8 · 153 km SE of Ishinomaki, JapanM 4.7 · 132 km SE of Ishinomaki, Japan · 20.9 kmM 4.6 · 118 km ESE of Namie, Japan · 63.9 kmM 4.7 · 224 km ESE of Namie, Japan · 99.0 kmM 4.6 · 214 km ESE of Ishinomaki, Japan · 73.2 kmM 4.7 · 139 km SE of ?funato, Japan · 69.1 kmM 4.5 · 100 km SE of Ishinomaki, Japan · 52.8 kmM 4.7 · 214 km ESE of Ishinomaki, Japan · 80.9 kmM 4.6 · 227 km E of Namie, Japan · 89.5 kmM 4.6 · 86 km ESE of Ishinomaki, Japan · 77.4 kmM 4.5 · 69 km ESE of Namie, Japan · 95.0 kmM 4.7 · 101 km ESE of Ishinomaki, Japan · 58.1 kmM 4.5 · 78 km ENE of Namie, Japan · 77.8 kmM 4.6 · 110 km ESE of Ishinomaki, Japan · 47.8 kmM 4.6 · 245 km E of Namie, Japan · 95.1 kmM 4.8 · 76 km E of Ishinomaki, Japan · 91.7 kmM 4.9 · 121 km E of Namie, Japan · 46.6 kmM 4.6 · 76 km E of Ishinomaki, Japan · 93.8 kmM 4.6 · 200 km SE of ?funato, Japan · 81.1 kmM 5.0 · 70 km E of Ishinomaki, Japan · 99.1 kmM 4.6 · 77 km E of Ishinomaki, Japan · 96.0 kmM 5.1 · 103 km E of Iwaki, Japan · 89.5 kmM 5.0 · 121 km ESE of Ishinomaki, Japan · 31.8 kmM 5.1 · 117 km SE of Ishinomaki, Japan · 35.9 kmM 4.7 · 76 km E of Ishinomaki, Japan · 89.8 kmM 4.6 · 183 km E of Namie, Japan · 50.2 kmM 4.7 · 194 km ESE of ?funato, Japan · 98.6 kmM 5.0 · 101 km SE of Ishinomaki, Japan · 54.2 kmM 4.9 · 91 km SE of Ishinomaki, Japan · 63.0 kmM 4.8 · 130 km ESE of Namie, Japan · 61.6 kmM 4.7 · 68 km E of Ishinomaki, Japan · 99.3 kmM 4.5 · 60 km ENE of Namie, Japan · 96.6 kmM 4.6 · 227 km E of Namie, Japan · 78.4 kmM 4.8 · 188 km ESE of Ishinomaki, Japan · 62.4 kmM 4.5 · 85 km E of Ishinomaki, Japan · 84.7 kmM 4.5 · 135 km E of Iwaki, Japan · 86.7 kmM 4.6 · 92 km E of Ishinomaki, Japan · 91.5 kmM 4.8 · 221 km ESE of Namie, Japan · 94.9 kmM 4.8 · 225 km ESE of Namie, Japan · 97.3 kmM 4.5 · 78 km E of Ishinomaki, Japan · 98.4 kmM 4.6 · 83 km E of Ishinomaki, Japan · 95.9 kmM 4.9 · 199 km ESE of Ishinomaki, Japan · 53.0 kmM 4.8 · 191 km ESE of Ishinomaki, Japan · 58.7 kmM 4.5 · 56 km ESE of Ishinomaki, Japan · 98.9 kmM 4.6 · 91 km E of Namie, Japan · 67.9 kmM 5.1 · 114 km ENE of Namie, Japan · 41.7 kmM 4.6 · 102 km ESE of Ishinomaki, Japan · 58.1 kmM 4.6 · 97 km SE of ?funato, Japan · 98.2 kmM 4.5 · 87 km E of Ishinomaki, Japan · 85.2 kmM 4.5 · 122 km E of Iwaki, Japan · 97.6 kmM 4.6 · 65 km ESE of Ishinomaki, Japan · 91.2 kmM 4.6 · 77 km ENE of Namie, Japan · 81.2 kmM 4.6 · 208 km ESE of Ishinomaki, Japan · 67.9 kmM 4.5 · 98 km ENE of Namie, Japan · 57.5 kmM 4.6 · 81 km E of Ishinomaki, Japan · 87.8 kmM 4.9 · 204 km SE of ?funato, Japan · 80.0 kmM 4.9 · 138 km SE of Ishinomaki, Japan · 15.3 kmM 4.8 · 138 km E of Namie, Japan · 42.3 kmM 4.5 · 172 km ESE of Namie, Japan · 78.2 kmM 4.6 · 138 km SE of Ishinomaki, Japan · 15.2 kmM 4.5 · 135 km ESE of Namie, Japan · 49.3 kmM 4.7 · 107 km ESE of Ishinomaki, Japan · 49.7 kmM 4.5 · 134 km SE of ?funato, Japan · 71.6 kmM 4.6 · 116 km SE of ?funato, Japan · 80.0 kmM 4.7 · 144 km ESE of Namie, Japan · 55.4 kmM 4.5 · 140 km E of Namie, Japan · 40.2 kmM 4.6 · 141 km E of Namie, Japan · 30.9 kmM 6.1 · 114 km E of Namie, Japan · 47.5 kmM 4.5 · 138 km E of Iwaki, Japan · 81.5 kmM 4.6 · 216 km ESE of Ishinomaki, Japan · 83.2 kmM 4.5 · 85 km SE of Ishinomaki, Japan · 67.6 kmM 4.9 · 78 km E of Ishinomaki, Japan · 89.7 kmM 4.8 · 69 km ENE of Namie, Japan · 87.7 kmM 4.8 · 194 km ESE of Ishinomaki, Japan · 55.3 kmM 4.7 · 195 km ESE of Ishinomaki, Japan · 56.3 kmM 4.9 · 208 km ESE of Ishinomaki, Japan · 61.6 kmM 4.6 · 122 km E of Namie, Japan · 48.6 kmM 4.7 · 118 km E of Namie, Japan · 37.0 kmM 4.7 · 126 km E of Namie, Japan · 29.9 kmM 4.7 · 193 km ESE of Namie, Japan · 71.5 kmM 5.1 · 211 km ESE of Namie, Japan · 89.7 kmM 4.7 · 146 km E of Namie, Japan · 18.4 kmM 4.5 · 68 km E of Namie, Japan · 86.5 kmM 4.7 · 64 km E of Namie, Japan · 89.7 kmM 4.9 · 216 km ESE of Namie, Japan · 94.3 kmM 4.7 · 134 km E of Namie, Japan · 41.9 kmM 4.7 · 129 km E of Namie, Japan · 45.9 kmM 4.6 · 159 km ESE of Ishinomaki, Japan · 10.1 kmM 4.5 · 171 km ESE of Ishinomaki, Japan · 27.0 kmM 4.6 · 134 km ESE of Namie, Japan · 64.1 kmM 4.5 · 72 km E of Namie, Japan · 82.8 kmM 5.1 · 236 km ESE of Ishinomaki, Japan · 96.9 kmM 4.8 · 164 km ESE of Ishinomaki, Japan · 42.3 kmM 4.8 · 203 km SE of ?funato, Japan · 87.4 kmM 4.8 · 201 km ESE of Ishinomaki, Japan · 56.4 kmM 4.6 · 219 km SE of ?funato, Japan · 98.4 kmM 4.5 · 209 km SE of ?funato, Japan · 92.9 kmM 5.0 · 203 km SE of ?funato, Japan · 87.7 kmM 4.6 · 215 km SE of ?funato, Japan · 95.5 kmM 5.4 · 202 km SE of ?funato, Japan · 84.7 kmM 4.7 · 152 km E of Namie, Japan · 4.5 km
M 4.8 · 153 km SE of Ishinomaki, 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 4.7132 km SE of Ishinomaki, Japan20.9 km · 2011-04-11 09:17:14 UTCM 4.6118 km ESE of Namie, Japan63.9 km · 2011-04-10 17:54:09 UTCM 4.7224 km ESE of Namie, Japan99.0 km · 2011-04-10 05:23:28 UTCM 4.6214 km ESE of Ishinomaki, Japan73.2 km · 2011-04-09 18:51:15 UTCM 4.7139 km SE of ?funato, Japan69.1 km · 2011-04-09 16:57:27 UTCM 4.5100 km SE of Ishinomaki, Japan52.8 km · 2011-04-08 13:20:28 UTCM 4.7214 km ESE of Ishinomaki, Japan80.9 km · 2011-04-08 05:09:06 UTCM 4.6227 km E of Namie, Japan89.5 km · 2011-04-08 03:45:41 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 update6271702 min
2014-11-07 01:44:02 UTC2014-11-07 01:44:02 UTC

Explore related context

Related or nearby earthquakes

M 4.5 · 91 km E of Namie, Japan63 km · 2026-09-21 22:29:59 UTCM 4.5 · 109 km E of Tomioka, Japan67 km · 2026-09-14 07:33:04 UTCM 4.5 · 90 km E of Tomioka, Japan80 km · 2026-05-08 20:11:23 UTCM 4.7 · 77 km E of Tomioka, Japan85 km · 2026-08-25 20:23:36 UTC

Geographic context

CountryJapan →Nearby cityIshinomaki →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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