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Updated 2025-12-22 16:00:08 UTC

M 5.1 — 278 km ESE of Namie, Japan

Magnitude 5.1, depth 35.0 km, 2011-03-12 20:09:56 UTC.

MagnitudeM 5.1
Depth35.0 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 →
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What to know

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

  • Magnitude M 5.1 at 35.0 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#28,237
Magnitude rank in country#2,202
M4.5+ within 250 km, ±15 days1,294
Sequence context1168 events →
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Impact and context

Descriptive indicators available for this event and its surroundings.

16/100Limited context
Felt reports—
Max felt intensity (CDI)—
Instrumental intensity (MMI)—
PAGER alertNot available
Tsunami indicator—
USGS significance400
Depth contextShallow
Nearby major cityTokyo404 km · 14,000,000

Nearby major city

Tokyo404 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 5.1 · 278 km ESE of Namie, Japan · 100 kmInteractive 3D view of earthquakes within 100 km of M 5.1 · 278 km ESE of Namie, Japan.M 5.1 · 278 km ESE of Namie, JapanM 4.5 · 265 km ESE of Namie, Japan · 31.1 kmM 4.7 · 224 km ESE of Namie, Japan · 54.2 kmM 4.8 · 211 km ESE of Iwaki, Japan · 71.3 kmM 4.6 · off the east coast of Honshu, Japan · 40.4 kmM 4.6 · 227 km E of Namie, Japan · 59.3 kmM 4.6 · 186 km ESE of Iwaki, Japan · 98.8 kmM 4.6 · 282 km ESE of Ishinomaki, Japan · 91.8 kmM 4.6 · 232 km ESE of Iwaki, Japan · 67.2 kmM 4.6 · 245 km E of Namie, Japan · 72.9 kmM 4.8 · off the east coast of Honshu, Japan · 84.0 kmM 4.9 · 224 km ESE of Iwaki, Japan · 61.3 kmM 4.7 · 289 km E of Namie, Japan · 38.6 kmM 4.7 · off the east coast of Honshu, Japan · 96.1 kmM 4.5 · 267 km ESE of Namie, Japan · 22.1 kmM 4.6 · 227 km E of Namie, Japan · 80.3 kmM 4.6 · 292 km E of Namie, Japan · 40.7 kmM 4.7 · 285 km E of Namie, Japan · 45.1 kmM 4.5 · 234 km E of Hasaki, Japan · 92.1 kmM 4.5 · 234 km E of Hasaki, Japan · 93.5 kmM 4.8 · 221 km ESE of Namie, Japan · 57.5 kmM 4.8 · 225 km ESE of Namie, Japan · 53.8 kmM 4.7 · 276 km ESE of Namie, Japan · 11.6 kmM 4.5 · 239 km E of Hasaki, Japan · 87.6 kmM 4.9 · 270 km E of Namie, Japan · 47.6 kmM 4.5 · 297 km E of Namie, Japan · 61.2 kmM 4.5 · 269 km ESE of Ishinomaki, Japan · 92.1 kmM 4.7 · 273 km E of Namie, Japan · 50.8 kmM 4.5 · 215 km E of Iwaki, Japan · 63.9 kmM 4.5 · 251 km E of Namie, Japan · 48.8 kmM 4.8 · 273 km E of Namie, Japan · 40.4 kmM 4.5 · 274 km E of Namie, Japan · 41.7 kmM 4.5 · 186 km ESE of Iwaki, Japan · 94.0 kmM 4.7 · off the east coast of Honshu, Japan · 48.8 kmM 4.5 · 275 km E of Iwaki, Japan · 6.4 kmM 4.7 · 193 km ESE of Namie, Japan · 85.9 kmM 5.1 · 211 km ESE of Namie, Japan · 66.5 kmM 4.9 · 216 km ESE of Namie, Japan · 61.5 kmM 4.6 · 226 km ESE of Namie, Japan · 51.4 kmM 4.8 · 244 km E of Iwaki, Japan · 34.7 kmM 4.5 · off the east coast of Honshu, Japan · 44.8 kmM 4.6 · 212 km ESE of Iwaki, Japan · 91.2 kmM 4.7 · 251 km ESE of Ishinomaki, Japan · 84.0 kmM 4.6 · 255 km ESE of Namie, Japan · 28.7 kmM 4.5 · 268 km E of Namie, Japan · 36.3 kmM 4.7 · 246 km ESE of Namie, Japan · 31.5 kmM 4.7 · 284 km E of Namie, Japan · 58.7 kmM 4.8 · 294 km ESE of Iwaki, Japan · 35.7 kmM 4.8 · 246 km E of Namie, Japan · 68.1 kmM 4.9 · 247 km E of Namie, Japan · 71.1 kmM 4.6 · 232 km E of Hasaki, Japan · 97.5 kmM 4.6 · 245 km ESE of Iwaki, Japan · 68.0 kmM 4.5 · 256 km E of Iwaki, Japan · 26.5 kmM 4.8 · 245 km E of Namie, Japan · 57.4 kmM 4.5 · 226 km ENE of Hasaki, Japan · 86.5 kmM 4.8 · 203 km E of Iwaki, Japan · 75.2 kmM 4.5 · 216 km ESE of Iwaki, Japan · 68.9 kmM 5.1 · 268 km E of Namie, Japan · 35.4 kmM 4.6 · 201 km ESE of Iwaki, Japan · 80.7 kmM 4.6 · off the east coast of Honshu, Japan · 56.1 kmM 5.6 · 206 km ESE of Namie, Japan · 72.9 kmM 4.6 · 233 km ESE of Namie, Japan · 45.5 kmM 4.7 · 259 km E of Namie, Japan · 38.1 kmM 4.5 · 270 km ESE of Namie, Japan · 24.4 kmM 4.9 · 263 km ESE of Namie, Japan · 25.3 kmM 4.7 · 296 km ESE of Namie, Japan · 34.9 kmM 4.5 · 286 km ESE of Namie, Japan · 27.7 kmM 6.4 · 267 km E of Namie, Japan · 55.3 kmM 4.6 · 236 km ESE of Ishinomaki, Japan · 98.6 kmM 4.5 · 238 km ESE of Ishinomaki, Japan · 97.9 kmM 5.0 · 208 km ESE of Iwaki, Japan · 73.0 kmM 4.5 · 270 km ESE of Iwaki, Japan · 33.3 kmM 4.8 · 251 km ESE of Iwaki, Japan · 33.3 kmM 4.5 · 262 km ESE of Namie, Japan · 23.8 kmM 5.2 · 255 km E of Namie, Japan · 45.0 kmM 4.5 · 247 km ESE of Namie, Japan · 37.9 kmM 5.0 · 234 km ESE of Iwaki, Japan · 68.8 kmM 4.5 · 244 km ESE of Iwaki, Japan · 63.7 kmM 4.6 · 237 km ENE of Hasaki, Japan · 80.2 kmM 4.9 · 235 km ESE of Iwaki, Japan · 71.9 kmM 4.6 · 280 km ESE of Namie, Japan · 12.8 kmM 4.8 · 218 km E of Iwaki, Japan · 60.6 kmM 4.5 · 228 km ESE of Iwaki, Japan · 60.1 kmM 4.9 · 258 km E of Namie, Japan · 54.5 kmM 4.9 · 213 km ESE of Iwaki, Japan · 70.2 kmM 4.5 · 225 km ENE of Hasaki, Japan · 88.6 kmM 4.8 · 287 km SE of ?funato, Japan · 98.0 kmM 4.5 · 256 km ESE of Ishinomaki, Japan · 89.3 kmM 4.6 · 198 km E of Namie, Japan · 90.6 kmM 4.8 · 248 km E of Namie, Japan · 44.0 kmM 4.7 · 220 km ESE of Iwaki, Japan · 81.8 kmM 4.5 · off the east coast of Honshu, Japan · 94.0 kmM 4.6 · 231 km ESE of Ishinomaki, Japan · 97.9 kmM 4.8 · 271 km ESE of Ishinomaki, Japan · 96.8 kmM 4.5 · off the east coast of Honshu, Japan · 44.8 kmM 4.7 · 216 km ESE of Namie, Japan · 62.5 kmM 4.8 · 206 km ESE of Iwaki, Japan · 77.1 kmM 4.7 · 254 km ESE of Ishinomaki, Japan · 86.1 kmM 4.7 · off the east coast of Honshu, Japan · 68.7 kmM 4.8 · 218 km ESE of Iwaki, Japan · 78.7 kmM 4.5 · off the east coast of Honshu, Japan · 55.5 km
M 5.1 · 278 km ESE 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 4.5265 km ESE of Namie, Japan31.1 km · 2011-04-11 17:35:14 UTCM 4.7224 km ESE of Namie, Japan54.2 km · 2011-04-10 05:23:28 UTCM 4.8211 km ESE of Iwaki, Japan71.3 km · 2011-04-08 21:30:12 UTCM 4.6off the east coast of Honshu, Japan40.4 km · 2011-04-08 09:08:36 UTCM 4.6227 km E of Namie, Japan59.3 km · 2011-04-08 03:45:41 UTCM 4.6186 km ESE of Iwaki, Japan98.8 km · 2011-04-07 21:13:37 UTCM 4.6282 km ESE of Ishinomaki, Japan91.8 km · 2011-04-07 19:15:42 UTCM 4.6232 km ESE of Iwaki, Japan67.2 km · 2011-04-06 21:49:27 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 5.1 → M 5.1
Depth change+0.0 km
Last update419942 min
2025-12-22 16:00:08 UTC2025-12-22 16:00:08 UTC

Explore related context

Related or nearby earthquakes

M 4.5 · 256 km ESE of Tomioka, Japan19 km · 2026-05-12 05:33:00 UTCM 4.5 · 295 km ESE of Onagawa Chō, Japan81 km · 2026-05-10 03:03:39 UTCM 5.6 · 209 km ESE of Ōfunato, Japan160 km · 2026-08-26 19:21:42 UTCM 4.5 · 109 km E of Tomioka, Japan163 km · 2026-09-14 07:33:04 UTC

Geographic context

CountryJapan →Nearby cityNamie →Seismic sequenceM 5.1 →

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Putting this earthquake in context

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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.

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