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Updated 2014-11-07 01:44:20 UTC

M 4.7 — off the east coast of Honshu, Japan

Magnitude 4.7, depth 18.0 km, 2011-03-27 00:23:49 UTC.

MagnitudeM 4.7
Depth18.0 km
Felt reports—
Statusreviewed
TsunamiNo

Japan →

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 4.7 at 18.0 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#83,653
Magnitude rank in country#6,890
M4.5+ within 250 km, ±15 days879
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Impact and context

Descriptive indicators available for this event and its surroundings.

10/100Limited context
Felt reports—
Max felt intensity (CDI)—
Instrumental intensity (MMI)—
PAGER alertNot available
Tsunami indicator—
USGS significance340
Depth contextShallow
Nearby major city—
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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 4.7 · off the east coast of Honshu, Japan · 100 kmInteractive 3D view of earthquakes within 100 km of M 4.7 · off the east coast of Honshu, Japan.M 4.7 · off the east coast of Honshu, JapanM 4.9 · 249 km ESE of Ishinomaki, Japan · 87.4 kmM 4.7 · 287 km E of Namie, Japan · 40.8 kmM 4.9 · 269 km ESE of Namie, Japan · 53.2 kmM 5.0 · 280 km E of Namie, Japan · 44.7 kmM 4.7 · off the east coast of Honshu, Japan · 40.1 kmM 5.0 · 223 km E of Namie, Japan · 99.6 kmM 4.6 · 233 km E of Namie, Japan · 88.7 kmM 5.5 · 267 km ESE of Namie, Japan · 54.5 kmM 4.9 · off the east coast of Honshu, Japan · 45.5 kmM 5.4 · 288 km SE of ?funato, Japan · 89.0 kmM 4.5 · 265 km ESE of Namie, Japan · 56.6 kmM 4.7 · 224 km ESE of Namie, Japan · 98.2 kmM 4.6 · off the east coast of Honshu, Japan · 21.8 kmM 4.6 · 227 km E of Namie, Japan · 94.5 kmM 4.6 · 282 km ESE of Ishinomaki, Japan · 78.5 kmM 4.6 · 245 km E of Namie, Japan · 89.8 kmM 4.8 · off the east coast of Honshu, Japan · 57.3 kmM 4.7 · 295 km ESE of ?funato, Japan · 89.8 kmM 4.5 · 280 km ESE of ?funato, Japan · 97.2 kmM 4.7 · 289 km E of Namie, Japan · 35.8 kmM 4.7 · off the east coast of Honshu, Japan · 70.1 kmM 4.5 · 267 km ESE of Namie, Japan · 54.0 kmM 4.6 · 292 km E of Namie, Japan · 33.5 kmM 4.7 · 285 km E of Namie, Japan · 42.9 kmM 4.8 · 225 km ESE of Namie, Japan · 96.2 kmM 4.5 · 269 km SE of ?funato, Japan · 96.4 kmM 4.7 · 276 km ESE of Namie, Japan · 45.7 kmM 4.9 · 270 km E of Namie, Japan · 57.9 kmM 4.5 · 297 km E of Namie, Japan · 45.2 kmM 4.5 · 269 km ESE of Ishinomaki, Japan · 86.2 kmM 4.7 · 273 km E of Namie, Japan · 56.9 kmM 4.5 · 251 km E of Namie, Japan · 73.2 kmM 4.8 · 273 km E of Namie, Japan · 51.7 kmM 4.5 · 274 km E of Namie, Japan · 51.0 kmM 4.5 · 275 km E of Iwaki, Japan · 54.5 kmM 4.6 · 226 km ESE of Namie, Japan · 95.8 kmM 4.8 · 244 km E of Iwaki, Japan · 83.1 kmM 4.5 · off the east coast of Honshu, Japan · 10.1 kmM 4.7 · 251 km ESE of Ishinomaki, Japan · 90.7 kmM 4.6 · 255 km ESE of Namie, Japan · 65.4 kmM 4.5 · 268 km E of Namie, Japan · 54.5 kmM 4.7 · 246 km ESE of Namie, Japan · 78.6 kmM 4.7 · 284 km E of Namie, Japan · 53.5 kmM 4.8 · 294 km ESE of Iwaki, Japan · 59.7 kmM 4.6 · off the east coast of Honshu, Japan · 86.0 kmM 4.8 · 246 km E of Namie, Japan · 85.8 kmM 4.9 · 247 km E of Namie, Japan · 87.1 kmM 4.5 · 276 km SE of ?funato, Japan · 97.9 kmM 4.5 · 256 km E of Iwaki, Japan · 75.2 kmM 4.8 · 245 km E of Namie, Japan · 81.2 kmM 5.1 · 268 km E of Namie, Japan · 54.4 kmM 4.6 · off the east coast of Honshu, Japan · 43.8 kmM 4.6 · 233 km ESE of Namie, Japan · 87.7 kmM 4.7 · 259 km E of Namie, Japan · 63.1 kmM 4.5 · 270 km ESE of Namie, Japan · 50.7 kmM 4.9 · 263 km ESE of Namie, Japan · 57.3 kmM 4.7 · 296 km ESE of Namie, Japan · 25.6 kmM 4.5 · 286 km ESE of Namie, Japan · 35.5 kmM 6.4 · 267 km E of Namie, Japan · 64.4 kmM 4.5 · 270 km ESE of Iwaki, Japan · 74.5 kmM 4.8 · 251 km ESE of Iwaki, Japan · 81.6 kmM 4.6 · 298 km ESE of ?funato, Japan · 94.4 kmM 4.5 · 262 km ESE of Namie, Japan · 58.9 kmM 5.2 · 255 km E of Namie, Japan · 68.2 kmM 4.5 · 247 km ESE of Namie, Japan · 74.0 kmM 4.5 · off the east coast of Honshu, Japan · 90.8 kmM 4.6 · 280 km ESE of Namie, Japan · 41.6 kmM 4.9 · 258 km E of Namie, Japan · 70.1 kmM 4.8 · 287 km SE of ?funato, Japan · 81.2 kmM 4.5 · 256 km ESE of Ishinomaki, Japan · 91.3 kmM 4.8 · 248 km E of Namie, Japan · 73.6 kmM 4.5 · off the east coast of Honshu, Japan · 57.8 kmM 4.6 · 274 km SE of ?funato, Japan · 94.0 kmM 4.8 · 271 km ESE of Ishinomaki, Japan · 88.4 kmM 5.0 · off the east coast of Honshu, Japan · 84.1 kmM 4.5 · off the east coast of Honshu, Japan · 27.2 kmM 4.7 · 254 km ESE of Ishinomaki, Japan · 90.2 kmM 4.7 · off the east coast of Honshu, Japan · 47.5 kmM 4.5 · off the east coast of Honshu, Japan · 22.0 kmM 4.5 · 295 km ESE of Iwaki, Japan · 58.2 kmM 4.8 · 286 km ESE of Iwaki, Japan · 62.7 kmM 4.8 · 286 km SE of ?funato, Japan · 83.8 kmM 4.5 · 264 km SE of ?funato, Japan · 99.8 kmM 4.8 · 237 km E of Namie, Japan · 93.2 kmM 4.5 · 248 km ESE of Namie, Japan · 73.9 kmM 4.7 · 229 km E of Namie, Japan · 95.8 kmM 4.7 · 228 km E of Namie, Japan · 97.6 kmM 4.8 · 245 km E of Namie, Japan · 78.4 kmM 5.1 · 234 km E of Namie, Japan · 96.0 kmM 4.6 · 244 km E of Namie, Japan · 83.7 kmM 4.8 · 247 km E of Namie, Japan · 85.5 kmM 4.5 · 252 km ESE of Namie, Japan · 69.1 kmM 4.6 · 250 km ESE of Ishinomaki, Japan · 94.9 kmM 4.7 · 249 km E of Namie, Japan · 85.2 kmM 4.7 · 250 km ESE of Ishinomaki, Japan · 93.1 kmM 4.7 · 232 km E of Namie, Japan · 91.7 kmM 4.9 · 226 km E of Namie, Japan · 99.8 kmM 4.8 · 289 km E of Namie, Japan · 52.0 kmM 5.2 · 275 km ESE of Ishinomaki, Japan · 67.8 kmM 4.7 · 242 km E of Namie, Japan · 89.5 km
M 4.7 · off the east coast of Honshu, 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 4.9249 km ESE of Ishinomaki, Japan87.4 km · 2011-04-25 09:09:32 UTCM 4.7287 km E of Namie, Japan40.8 km · 2011-04-23 21:59:36 UTCM 4.9269 km ESE of Namie, Japan53.2 km · 2011-04-23 19:34:26 UTCM 5.0280 km E of Namie, Japan44.7 km · 2011-04-22 16:27:40 UTCM 4.7off the east coast of Honshu, Japan40.1 km · 2011-04-19 20:24:08 UTCM 5.0223 km E of Namie, Japan99.6 km · 2011-04-19 04:04:30 UTCM 4.6233 km E of Namie, Japan88.7 km · 2011-04-18 03:53:40 UTCM 5.5267 km ESE of Namie, Japan54.5 km · 2011-04-16 20:36:46 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 4.7 → M 4.7
Depth change+0.0 km
Last update6271899 min
2014-11-07 01:44:20 UTC2014-11-07 01:44:20 UTC

Explore related context

Related or nearby earthquakes

M 4.5 · 295 km ESE of Onagawa Chō, Japan56 km · 2026-05-10 03:03:39 UTCM 4.5 · 256 km ESE of Tomioka, Japan61 km · 2026-05-12 05:33:00 UTCM 5.6 · 209 km ESE of Ōfunato, Japan161 km · 2026-08-26 19:21:42 UTCM 4.5 · 129 km ESE of Iwaki, Japan203 km · 2026-02-20 10:39:18 UTC

Geographic context

CountryJapan →

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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.

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