Updated 2022-05-02 16:54:45 UTC

M 5.7 — 139 km S of False Pass, Alaska

Magnitude 5.7, depth 33.0 km, 2003-11-27 06:07:04 UTC.

MagnitudeM 5.7
Depth33.0 km
Felt reports—
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 Index84/100Elevated
Current 30 days18
Historical monthly median11.0
Historical percentileP84
M5+ in 30 days6
M6+ in 30 days0
Activity trendabove the historical median (+64%)
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 5.7 at 33.0 km depth.
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#6,430
Magnitude rank in country#273
M4.5+ within 250 km, ±15 days2
Quake Pulse

Impact and context

Descriptive indicators available for this event and its surroundings.

25/100Moderate context
Felt reports—
Max felt intensity (CDI)—
Instrumental intensity (MMI)—
PAGER alertNot available
Tsunami indicator—
USGS significance500
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.

M 5.7 · 139 km S of False Pass, Alaska · 100 kmInteractive 3D view of earthquakes within 100 km of M 5.7 · 139 km S of False Pass, Alaska.M 5.7 · 139 km S of False Pass, AlaskaM 4.5 · 132 km ESE of Akutan, Alaska · 46.5 kmM 4.5 · 146 km S of False Pass, Alaska · 9.8 km
M 5.7 · 139 km S of False Pass, Alaska100 km2 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

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 5.7 → M 5.7
Depth change+0.0 km
Last update2335622 min
2022-05-02 16:54:45 UTC2022-05-02 16:54:45 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.

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