Updated 2024-06-17 19:57:44 UTC

M 7.7 — 156 km ENE of Poronaysk, Russia

Magnitude 7.7, depth 583.2 km, 2012-08-14 02:59:38 UTC.

MagnitudeM 7.7
Depth583.2 km
Felt reports47
Statusreviewed
TsunamiNo
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 Index78/100Elevated
Current 30 days21
Historical monthly median14.0
Historical percentileP78
M5+ in 30 days5
M6+ in 30 days0
Activity trendabove the historical median (+50%)
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 7.7 at 583.2 km depth.
  • 47 felt report(s) are associated with the USGS record.
Counts describe detected earthquakes and are not a forecast or hazard assessment.
Quake Pulse

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#63
Magnitude rank in country#3
M4.5+ within 250 km, ±15 days1
Remarkable

Why this event stands out

high magnitude

55/100
Quake Pulse

Impact and context

Descriptive indicators available for this event and its surroundings.

63/100High context
Felt reports47
Max felt intensity (CDI)6.8
Instrumental intensity (MMI)4.3
PAGER alertNot available
Tsunami indicator—
USGS significance944
Depth contextVery deep
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.

Quake Pulse

Around this epicenter

Nearby events observed around this epicenter. Spatial proximity does not necessarily mean they belong to the same sequence.

M 7.7 · 156 km ENE of Poronaysk, Russia · 100 kmInteractive 3D view of earthquakes within 100 km of M 7.7 · 156 km ENE of Poronaysk, Russia.M 7.7 · 156 km ENE of Poronaysk, Russia
M 7.7 · 156 km ENE of Poronaysk, Russia100 km0 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

No other event is present in this radius and recent window.

Quake Pulse

USGS data evolution

Earthquake parameters can be revised after first publication. This timeline shows versions retained by Quake Pulse.

Revisions1
Magnitude change+0.0M 7.7 → M 7.7
Depth change+0.0 km
Last update1215577 min
2024-06-17 19:57:44 UTC2024-06-17 19:57:44 UTC

Explore related context

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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