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Updated 2014-11-07 01:43:58 UTC

M 4.8 — 223 km ESE of Ishinomaki, Japan

Magnitude 4.8, depth 35.0 km, 2011-03-11 17:47:16 UTC.

MagnitudeM 4.8
Depth35.0 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 →
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What to know

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

  • Magnitude M 4.8 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#64,293
Magnitude rank in country#5,043
M4.5+ within 250 km, ±15 days1,516
Sequence context1008 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 cityTokyo405 km · 14,000,000

Nearby major city

Tokyo405 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 · 223 km ESE of Ishinomaki, Japan · 100 kmInteractive 3D view of earthquakes within 100 km of M 4.8 · 223 km ESE of Ishinomaki, Japan.M 4.8 · 223 km ESE of Ishinomaki, JapanM 4.7 · 224 km ESE of Namie, Japan · 69.5 kmM 4.6 · 214 km ESE of Ishinomaki, Japan · 17.5 kmM 4.7 · 139 km SE of ?funato, Japan · 97.0 kmM 4.7 · 199 km ESE of Kamaishi, Japan · 96.6 kmM 4.6 · 236 km SE of ?funato, Japan · 49.5 kmM 4.6 · 229 km SE of ?funato, Japan · 52.5 kmM 4.6 · off the east coast of Honshu, Japan · 92.0 kmM 4.6 · 233 km ESE of ?funato, Japan · 54.4 kmM 4.7 · 214 km ESE of Ishinomaki, Japan · 30.9 kmM 4.6 · 227 km E of Namie, Japan · 46.9 kmM 4.6 · 282 km ESE of Ishinomaki, Japan · 64.1 kmM 4.6 · off the east coast of Honshu, Japan · 83.5 kmM 4.6 · 245 km E of Namie, Japan · 24.2 kmM 4.6 · 235 km ESE of Kamaishi, Japan · 86.0 kmM 4.8 · off the east coast of Honshu, Japan · 86.8 kmM 4.7 · 295 km ESE of ?funato, Japan · 86.9 kmM 4.5 · 280 km ESE of ?funato, Japan · 76.3 kmM 4.7 · 272 km ESE of ?funato, Japan · 76.5 kmM 4.6 · 200 km SE of ?funato, Japan · 48.8 kmM 4.5 · 286 km ESE of ?funato, Japan · 86.1 kmM 4.6 · 256 km SE of ?funato, Japan · 50.8 kmM 4.7 · 289 km E of Namie, Japan · 78.1 kmM 4.6 · 183 km E of Namie, Japan · 58.2 kmM 4.7 · off the east coast of Honshu, Japan · 87.4 kmM 4.7 · 194 km ESE of ?funato, Japan · 69.8 kmM 4.5 · 267 km ESE of Namie, Japan · 73.7 kmM 4.6 · 227 km E of Namie, Japan · 17.8 kmM 4.8 · 188 km ESE of Ishinomaki, Japan · 46.4 kmM 4.6 · 292 km E of Namie, Japan · 80.2 kmM 4.7 · 285 km E of Namie, Japan · 70.9 kmM 4.8 · 221 km ESE of Namie, Japan · 66.3 kmM 4.8 · 225 km ESE of Namie, Japan · 64.8 kmM 4.9 · 199 km ESE of Ishinomaki, Japan · 23.7 kmM 4.8 · 191 km ESE of Ishinomaki, Japan · 38.2 kmM 4.5 · 269 km SE of ?funato, Japan · 60.0 kmM 4.7 · 276 km ESE of Namie, Japan · 85.8 kmM 4.9 · 270 km E of Namie, Japan · 56.2 kmM 4.6 · 208 km ESE of Ishinomaki, Japan · 20.3 kmM 4.5 · 297 km E of Namie, Japan · 75.3 kmM 4.5 · 269 km ESE of Ishinomaki, Japan · 50.6 kmM 4.9 · 204 km SE of ?funato, Japan · 44.0 kmM 4.9 · 138 km SE of Ishinomaki, Japan · 90.3 kmM 4.8 · 138 km E of Namie, Japan · 96.8 kmM 4.5 · 172 km ESE of Namie, Japan · 96.6 kmM 4.6 · 138 km SE of Ishinomaki, Japan · 88.9 kmM 4.7 · 273 km E of Namie, Japan · 56.9 kmM 4.5 · 140 km E of Namie, Japan · 94.7 kmM 4.6 · 141 km E of Namie, Japan · 90.4 kmM 4.6 · 216 km ESE of Ishinomaki, Japan · 31.7 kmM 4.5 · 215 km E of Iwaki, Japan · 92.8 kmM 4.5 · 231 km ESE of Kamaishi, Japan · 81.8 kmM 4.5 · 200 km ESE of ?funato, Japan · 71.3 kmM 4.5 · 251 km E of Namie, Japan · 46.8 kmM 4.8 · 273 km E of Namie, Japan · 63.1 kmM 4.8 · 194 km ESE of Ishinomaki, Japan · 31.8 kmM 4.7 · 195 km ESE of Ishinomaki, Japan · 31.2 kmM 4.6 · 245 km ESE of Kamaishi, Japan · 86.8 kmM 4.5 · 274 km E of Namie, Japan · 63.4 kmM 4.5 · 275 km E of Iwaki, Japan · 98.2 kmM 4.9 · 208 km ESE of Ishinomaki, Japan · 14.6 kmM 4.7 · 193 km ESE of Namie, Japan · 68.3 kmM 5.1 · 211 km ESE of Namie, Japan · 70.3 kmM 4.7 · 146 km E of Namie, Japan · 83.1 kmM 4.9 · 216 km ESE of Namie, Japan · 71.2 kmM 4.7 · 134 km E of Namie, Japan · 99.8 kmM 4.6 · 226 km ESE of Namie, Japan · 71.3 kmM 4.8 · 244 km E of Iwaki, Japan · 88.7 kmM 4.6 · 159 km ESE of Ishinomaki, Japan · 67.3 kmM 4.5 · 244 km ESE of ?funato, Japan · 56.7 kmM 4.8 · 230 km ESE of ?funato, Japan · 57.1 kmM 4.5 · 171 km ESE of Ishinomaki, Japan · 52.3 kmM 5.1 · 236 km ESE of Ishinomaki, Japan · 28.3 kmM 5.3 · 238 km ESE of Ishinomaki, Japan · 33.5 kmM 4.7 · 231 km ESE of Kamaishi, Japan · 89.0 kmM 4.7 · 251 km ESE of Ishinomaki, Japan · 29.3 kmM 4.8 · 164 km ESE of Ishinomaki, Japan · 62.2 kmM 4.8 · 203 km SE of ?funato, Japan · 51.3 kmM 4.8 · 201 km ESE of Ishinomaki, Japan · 22.2 kmM 4.6 · 255 km ESE of Namie, Japan · 68.0 kmM 4.6 · 219 km SE of ?funato, Japan · 48.1 kmM 4.5 · 209 km SE of ?funato, Japan · 50.7 kmM 5.0 · 203 km SE of ?funato, Japan · 51.2 kmM 4.6 · 215 km SE of ?funato, Japan · 48.6 kmM 5.4 · 202 km SE of ?funato, Japan · 49.7 kmM 4.5 · 268 km E of Namie, Japan · 62.9 kmM 4.7 · 246 km ESE of Namie, Japan · 82.8 kmM 4.7 · 284 km E of Namie, Japan · 63.1 kmM 4.7 · 152 km E of Namie, Japan · 77.3 kmM 4.7 · 242 km SE of ?funato, Japan · 51.5 kmM 4.6 · off the east coast of Honshu, Japan · 95.4 kmM 4.8 · 246 km E of Namie, Japan · 28.7 kmM 4.9 · 247 km E of Namie, Japan · 26.8 kmM 4.5 · 178 km ESE of ?funato, Japan · 83.8 kmM 4.8 · 164 km E of Namie, Japan · 69.9 kmM 4.5 · 276 km SE of ?funato, Japan · 70.9 kmM 5.0 · 157 km ESE of Ishinomaki, Japan · 70.3 kmM 4.5 · 256 km E of Iwaki, Japan · 98.5 kmM 4.8 · 245 km E of Namie, Japan · 38.2 kmM 4.9 · 254 km ESE of ?funato, Japan · 72.8 kmM 4.5 · 152 km SE of Ishinomaki, Japan · 76.0 km
M 4.8 · 223 km ESE 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 4.7224 km ESE of Namie, Japan69.5 km · 2011-04-10 05:23:28 UTCM 4.6214 km ESE of Ishinomaki, Japan17.5 km · 2011-04-09 18:51:15 UTCM 4.7139 km SE of ?funato, Japan97.0 km · 2011-04-09 16:57:27 UTCM 4.7199 km ESE of Kamaishi, Japan96.6 km · 2011-04-08 19:13:29 UTCM 4.6236 km SE of ?funato, Japan49.5 km · 2011-04-08 12:10:54 UTCM 4.6229 km SE of ?funato, Japan52.5 km · 2011-04-08 10:04:15 UTCM 4.6off the east coast of Honshu, Japan92.0 km · 2011-04-08 09:08:36 UTCM 4.6233 km ESE of ?funato, Japan54.4 km · 2011-04-08 07:07:39 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 update6271664 min
2014-11-07 01:43:58 UTC2014-11-07 01:43:58 UTC

Explore related context

Related or nearby earthquakes

M 5.6 · 209 km ESE of Ōfunato, Japan74 km · 2026-08-26 19:21:42 UTCM 4.5 · 256 km ESE of Tomioka, Japan78 km · 2026-05-12 05:33:00 UTCM 4.5 · 295 km ESE of Onagawa Chō, Japan84 km · 2026-05-10 03:03:39 UTCM 4.5 · 109 km E of Tomioka, Japan126 km · 2026-09-14 07:33:04 UTC

Geographic context

CountryJapan →Nearby cityIshinomaki →Seismic sequenceM 4.8 →

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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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