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Updated 2014-11-07 01:44:45 UTC

M 4.8 — 100 km ESE of Kitaibaraki, Japan

Magnitude 4.8, depth 36.8 km, 2011-05-05 22:46:52 UTC.

MagnitudeM 4.8
Depth36.8 km
Felt reports—
Statusreviewed
TsunamiNo

Japan → · Kitaibaraki →

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 4.8 at 36.8 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#64,291
Magnitude rank in country#5,043
M4.5+ within 250 km, ±15 days181
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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 cityTokyo215 km · 14,000,000

Nearby major city

Tokyo215 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 · 100 km ESE of Kitaibaraki, Japan · 100 kmInteractive 3D view of earthquakes within 100 km of M 4.8 · 100 km ESE of Kitaibaraki, Japan.M 4.8 · 100 km ESE of Kitaibaraki, JapanM 4.5 · 50 km SE of Namie, Japan · 79.7 kmM 5.5 · 3 km NE of Iwaki, Japan · 100.0 kmM 4.7 · 118 km ENE of Hasaki, Japan · 64.8 kmM 4.6 · 93 km ESE of Iwaki, Japan · 30.3 kmM 4.6 · 26 km SE of Hitachi, Japan · 86.8 kmM 4.9 · 16 km E of Funaishikawa, Japan · 96.2 kmM 4.8 · 172 km ESE of Iwaki, Japan · 77.2 kmM 4.8 · 166 km ESE of Iwaki, Japan · 75.7 kmM 5.0 · 123 km ENE of Hasaki, Japan · 33.7 kmM 4.7 · 133 km ENE of Hasaki, Japan · 38.8 kmM 4.6 · 50 km ESE of Hitachi, Japan · 59.7 kmM 4.6 · 63 km ESE of Takahagi, Japan · 39.2 kmM 4.5 · 53 km E of Namie, Japan · 97.1 kmM 4.7 · 123 km ESE of Kitaibaraki, Japan · 24.9 kmM 4.6 · 172 km ESE of Iwaki, Japan · 74.6 kmM 5.0 · 32 km ENE of ?arai, Japan · 81.5 kmM 4.7 · 32 km E of Kitaibaraki, Japan · 68.9 kmM 4.7 · 137 km ESE of Namie, Japan · 73.9 kmM 4.5 · 56 km E of ?arai, Japan · 60.5 kmM 4.6 · 50 km SE of Namie, Japan · 79.8 kmM 4.8 · 91 km ENE of Hasaki, Japan · 64.5 kmM 5.3 · 153 km ESE of Namie, Japan · 98.7 kmM 4.5 · 33 km ESE of Takahagi, Japan · 68.1 kmM 4.6 · 50 km SE of Namie, Japan · 81.9 kmM 4.8 · 131 km ESE of Namie, Japan · 81.1 kmM 5.1 · 127 km ESE of Namie, Japan · 72.4 kmM 4.7 · 124 km ESE of Iwaki, Japan · 46.2 kmM 4.7 · 157 km ESE of Namie, Japan · 97.5 kmM 4.5 · 66 km ESE of Namie, Japan · 80.3 kmM 4.6 · 63 km ESE of Namie, Japan · 87.3 kmM 4.6 · 98 km E of Iwaki, Japan · 55.3 kmM 4.6 · 38 km E of ?arai, Japan · 76.8 kmM 5.2 · 135 km ENE of Hasaki, Japan · 63.4 kmM 4.8 · 169 km ENE of Hasaki, Japan · 73.7 kmM 4.7 · 108 km ESE of Iwaki, Japan · 26.0 kmM 5.0 · 103 km ENE of Hasaki, Japan · 48.7 kmM 4.7 · 108 km ENE of Hasaki, Japan · 48.9 kmM 5.1 · 89 km NE of Hasaki, Japan · 39.9 kmM 4.5 · 183 km ENE of Hasaki, Japan · 92.2 kmM 4.7 · 44 km ENE of Kashima-shi, Japan · 79.8 kmM 4.5 · 35 km E of ?arai, Japan · 82.1 kmM 4.5 · 31 km ESE of Hitachi, Japan · 74.5 kmM 4.5 · 8 km E of Iwaki, Japan · 94.9 kmM 4.6 · 89 km ENE of Hasaki, Japan · 47.5 kmM 4.7 · 37 km ESE of Takahagi, Japan · 64.0 kmM 4.7 · 120 km ESE of Iwaki, Japan · 33.9 kmM 4.6 · 133 km ESE of Namie, Japan · 78.6 kmM 4.5 · 154 km ESE of Namie, Japan · 93.3 kmM 4.7 · 54 km E of ?arai, Japan · 65.4 kmM 4.5 · 126 km ESE of Namie, Japan · 86.4 kmM 4.5 · 37 km SE of Namie, Japan · 90.5 kmM 4.7 · 72 km ENE of Hasaki, Japan · 70.4 kmM 4.5 · 115 km E of Iwaki, Japan · 49.0 kmM 4.9 · 19 km E of ?arai, Japan · 95.7 kmM 4.8 · 41 km SE of Iwaki, Japan · 59.9 kmM 4.6 · 148 km ESE of Namie, Japan · 90.7 kmM 4.8 · 27 km E of Kitaibaraki, Japan · 72.4 kmM 5.1 · 28 km E of Kitaibaraki, Japan · 72.9 kmM 4.5 · 117 km ESE of Iwaki, Japan · 36.4 kmM 4.5 · 114 km ESE of Kitaibaraki, Japan · 19.3 kmM 5.0 · 154 km ESE of Iwaki, Japan · 68.7 kmM 5.0 · 151 km E of Iwaki, Japan · 70.3 kmM 4.6 · 48 km ESE of ?arai, Japan · 73.6 kmM 5.1 · 116 km ESE of Iwaki, Japan · 44.9 kmM 5.1 · 29 km ESE of ?arai, Japan · 91.9 kmM 4.6 · 77 km ESE of Iwaki, Japan · 26.0 kmM 4.5 · 30 km SE of Namie, Japan · 96.7 kmM 4.5 · 113 km ESE of Iwaki, Japan · 30.1 kmM 4.6 · 77 km ENE of Hasaki, Japan · 74.3 kmM 4.6 · 82 km ESE of Namie, Japan · 81.7 kmM 4.6 · 75 km ESE of Kitaibaraki, Japan · 24.6 kmM 5.0 · 113 km ESE of Namie, Japan · 88.1 kmM 4.5 · 117 km ENE of Hasaki, Japan · 42.9 kmM 4.5 · 21 km SE of Takahagi, Japan · 83.0 kmM 4.7 · 97 km NE of Hasaki, Japan · 32.7 kmM 4.5 · 157 km ESE of Iwaki, Japan · 58.7 kmM 4.6 · 31 km E of ?arai, Japan · 84.2 kmM 4.6 · 22 km ENE of Iwaki, Japan · 87.6 kmM 4.6 · 14 km NE of Kitaibaraki, Japan · 96.1 kmM 4.8 · 60 km ESE of Kitaibaraki, Japan · 39.6 kmM 4.6 · 72 km NE of Hasaki, Japan · 57.8 kmM 4.7 · 81 km E of ?arai, Japan · 41.7 kmM 4.5 · 47 km ESE of Takahagi, Japan · 55.9 kmM 4.5 · 46 km E of Namie, Japan · 99.4 kmM 4.7 · 79 km ESE of Kitaibaraki, Japan · 20.9 kmM 4.9 · 22 km E of Iwaki, Japan · 81.4 kmM 4.6 · 4 km NE of Iwaki, Japan · 100.0 kmM 4.8 · 28 km NE of Kashima-shi, Japan · 95.9 kmM 5.0 · 128 km ESE of Namie, Japan · 90.2 kmM 4.8 · 163 km ESE of Iwaki, Japan · 65.4 kmM 4.6 · 89 km ESE of Kitaibaraki, Japan · 10.2 kmM 5.1 · 74 km ESE of Iwaki, Japan · 27.0 kmM 4.6 · 127 km ENE of Hasaki, Japan · 62.0 kmM 4.7 · 168 km ESE of Iwaki, Japan · 72.2 kmM 4.5 · 36 km E of Iwaki, Japan · 76.6 kmM 4.7 · 129 km ESE of Namie, Japan · 72.0 kmM 4.5 · 31 km NE of Hasaki, Japan · 96.1 kmM 4.6 · 110 km E of Namie, Japan · 97.7 kmM 4.9 · 102 km ESE of Takahagi, Japan · 23.7 kmM 4.5 · off the east coast of Honshu, Japan · 79.5 km
M 4.8 · 100 km ESE of Kitaibaraki, Japan100 km100 Recent earthquakes

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

Sequence context

No public sequence is currently associated with this event.

Nearby events · 100 km

M 4.550 km SE of Namie, Japan79.7 km · 2011-06-04 00:03:34 UTCM 5.53 km NE of Iwaki, Japan100.0 km · 2011-06-03 16:00:15 UTCM 4.7118 km ENE of Hasaki, Japan64.8 km · 2011-06-02 00:06:04 UTCM 4.693 km ESE of Iwaki, Japan30.3 km · 2011-06-01 04:00:07 UTCM 4.626 km SE of Hitachi, Japan86.8 km · 2011-05-31 07:50:16 UTCM 4.916 km E of Funaishikawa, Japan96.2 km · 2011-05-30 19:36:41 UTCM 4.8172 km ESE of Iwaki, Japan77.2 km · 2011-05-30 01:04:37 UTCM 4.8166 km ESE of Iwaki, Japan75.7 km · 2011-05-30 00:05:38 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 update6271474 min
2014-11-07 01:44:45 UTC2014-11-07 01:44:45 UTC

Explore related context

Related or nearby earthquakes

M 4.4 · 90 km ESE of Tomioka, Japan45 km · 2026-08-23 00:32:24 UTCM 4.5 · 37 km ESE of Iwaki, Japan66 km · 2026-10-07 00:22:41 UTCM 4.9 · 83 km ENE of Hasaki, Japan69 km · 2026-05-01 13:00:39 UTCM 4.5 · 90 km E of Tomioka, Japan75 km · 2026-05-08 20:11:23 UTC

Geographic context

CountryJapan →Nearby cityKitaibaraki →

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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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