Updated 2026-09-12 04:57:17 UTC

M 5.3 — 151 km WSW of Adak, Alaska

Magnitude 5.3, depth 40.9 km, 2026-09-11 10:47:12 UTC.

MagnitudeM 5.3
Depth40.9 km
Felt reports—
Statusreviewed
TsunamiYes
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 5.3 at 40.9 km depth.
  • The USGS tsunami flag is enabled for this event.
  • The solution has already been revised 9 times in Quake Pulse.
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#16,864
Magnitude rank in country#659
M4.5+ within 250 km, ±15 days1
Quake Pulse

Impact and context

Descriptive indicators available for this event and its surroundings.

34/100Moderate context
Felt reports—
Max felt intensity (CDI)—
Instrumental intensity (MMI)5.3
PAGER alertNot available
Tsunami indicatorYES
USGS significance432
Depth contextShallow
Nearby major city—
250 km

Local historical context

Descriptive comparison with earlier events within 250 km.

M4.5+ in previous year0Earlier local maximum—
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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 5.3 · 151 km WSW of Adak, Alaska · 100 kmInteractive 3D view of earthquakes within 100 km of M 5.3 · 151 km WSW of Adak, Alaska.M 5.3 · 151 km WSW of Adak, AlaskaM 0.7 · 151 km W of Adak, Alaska · 67.6 kmM 0.8 · 96 km W of Adak, Alaska · 80.9 kmM 2.5 · 128 km SW of Adak, Alaska · 44.8 kmM 2.1 · 148 km W of Adak, Alaska · 63.5 kmM 0.9 · 152 km W of Adak, Alaska · 67.1 kmM 1.7 · 152 km W of Adak, Alaska · 65.4 kmM 0.6 · 149 km W of Adak, Alaska · 63.8 kmM 0.8 · 150 km W of Adak, Alaska · 65.4 kmM 1.0 · 151 km W of Adak, Alaska · 70.1 kmM 0.4 · 150 km W of Adak, Alaska · 67.1 kmM 0.2 · 104 km W of Adak, Alaska · 81.2 kmM 0.3 · 154 km W of Adak, Alaska · 68.0 kmM 1.3 · 96 km W of Adak, Alaska · 77.6 kmM 0.8 · 152 km W of Adak, Alaska · 75.3 kmM 3.0 · 73 km WSW of Adak, Alaska · 77.5 kmM 3.1 · 82 km SW of Adak, Alaska · 73.6 kmM 0.8 · 155 km W of Adak, Alaska · 66.8 kmM 3.5 · 126 km WSW of Adak, Alaska · 25.0 kmM 0.5 · 152 km W of Adak, Alaska · 69.0 kmM 0.6 · 150 km W of Adak, Alaska · 68.6 kmM 1.5 · 156 km W of Adak, Alaska · 73.3 kmM 0.9 · 88 km W of Adak, Alaska · 84.4 kmM 0.4 · 82 km W of Adak, Alaska · 86.3 kmM 1.3 · 146 km W of Adak, Alaska · 55.8 kmM 3.5 · 148 km WSW of Adak, Alaska · 4.8 kmM 2.0 · 133 km WSW of Adak, Alaska · 46.8 kmM 1.3 · 149 km W of Adak, Alaska · 67.3 kmM 0.3 · 149 km W of Adak, Alaska · 65.7 kmM 0.1 · 150 km W of Adak, Alaska · 65.0 kmM 0.8 · 157 km W of Adak, Alaska · 71.1 kmM 0.9 · 149 km W of Adak, Alaska · 56.2 kmM 0.3 · 148 km W of Adak, Alaska · 68.3 kmM 0.6 · 93 km W of Adak, Alaska · 81.9 kmM 1.2 · 151 km W of Adak, Alaska · 63.2 kmM 1.2 · 151 km W of Adak, Alaska · 63.5 kmM 3.4 · 160 km WSW of Adak, Alaska · 24.5 kmM 3.6 · 163 km WSW of Adak, Alaska · 13.1 kmM 3.1 · 113 km SW of Adak, Alaska · 43.5 kmM 3.2 · 118 km SW of Adak, Alaska · 46.6 kmM 2.7 · 243 km WSW of Adak, Alaska · 94.7 kmM 3.0 · 134 km SW of Adak, Alaska · 52.9 kmM 2.5 · 162 km SW of Adak, Alaska · 17.2 kmM 2.1 · 199 km W of Adak, Alaska · 84.9 kmM 2.0 · 122 km SW of Adak, Alaska · 33.1 kmM 2.3 · 158 km SW of Adak, Alaska · 18.3 kmM 3.5 · 134 km SW of Adak, Alaska · 40.1 kmM 2.1 · 135 km SW of Adak, Alaska · 59.8 kmM 1.8 · 73 km SSW of Adak, Alaska · 96.4 kmM 3.9 · 150 km WSW of Adak, Alaska · 1.0 kmM 4.2 · 157 km WSW of Adak, Alaska · 10.6 kmM 2.5 · 214 km SW of Adak, Alaska · 65.2 kmM 3.5 · 151 km SW of Adak, Alaska · 10.7 kmM 2.6 · 174 km W of Adak, Alaska · 58.7 kmM 2.5 · 152 km SW of Adak, Alaska · 20.1 kmM 2.5 · 135 km SW of Adak, Alaska · 20.0 kmM 4.3 · 151 km SW of Adak, Alaska · 13.8 kmM 3.1 · 152 km SW of Adak, Alaska · 15.8 kmM 5.7 · 152 km SW of Adak, Alaska · 13.6 kmM 2.5 · 181 km WSW of Adak, Alaska · 41.1 kmM 1.6 · 91 km W of Adak, Alaska · 84.6 kmM 2.4 · 179 km SW of Adak, Alaska · 32.2 kmM 3.4 · 156 km SW of Adak, Alaska · 23.5 kmM 3.6 · 163 km SW of Adak, Alaska · 26.3 kmM 3.0 · 137 km SW of Adak, Alaska · 18.1 kmM 3.5 · 159 km SW of Adak, Alaska · 25.3 kmM 3.5 · 160 km SW of Adak, Alaska · 21.9 kmM 2.5 · 124 km WSW of Adak, Alaska · 27.5 kmM 2.5 · 121 km WSW of Adak, Alaska · 30.9 kmM 2.8 · 166 km WSW of Adak, Alaska · 16.4 kmM 2.0 · 133 km W of Adak, Alaska · 55.8 kmM 1.1 · 82 km W of Adak, Alaska · 87.6 kmM 3.1 · 114 km SW of Adak, Alaska · 43.8 kmM 3.1 · 200 km W of Adak, Alaska · 80.3 kmM 1.3 · 155 km W of Adak, Alaska · 66.9 kmM 3.2 · 234 km WSW of Adak, Alaska · 94.6 kmM 2.3 · 207 km W of Adak, Alaska · 91.7 kmM 2.2 · 149 km WSW of Adak, Alaska · 7.8 kmM 0.5 · 149 km W of Adak, Alaska · 66.5 kmM 0.4 · 141 km W of Adak, Alaska · 64.9 kmM -0.1 · 149 km W of Adak, Alaska · 67.0 kmM 2.2 · 82 km SW of Adak, Alaska · 76.1 kmM 2.8 · 239 km WSW of Adak, Alaska · 90.9 kmM 0.9 · 149 km W of Adak, Alaska · 67.8 kmM 0.1 · 149 km W of Adak, Alaska · 66.8 kmM 1.2 · 154 km W of Adak, Alaska · 65.1 kmM 2.7 · 198 km WSW of Adak, Alaska · 47.1 kmM 2.2 · 69 km SW of Adak, Alaska · 91.6 kmM 0.3 · 144 km W of Adak, Alaska · 70.6 kmM 2.4 · 155 km WSW of Adak, Alaska · 18.5 kmM 0.8 · 150 km W of Adak, Alaska · 69.0 kmM 0.7 · 150 km W of Adak, Alaska · 68.4 kmM 0.5 · 148 km W of Adak, Alaska · 68.5 kmM 2.6 · 179 km WSW of Adak, Alaska · 39.3 kmM 3.1 · 162 km WSW of Adak, Alaska · 32.3 kmM 2.7 · 181 km WSW of Adak, Alaska · 30.4 kmM 3.5 · 134 km SW of Adak, Alaska · 20.3 kmM 2.7 · 176 km SW of Adak, Alaska · 27.3 kmM 2.6 · 176 km WSW of Adak, Alaska · 24.9 kmM 2.8 · 173 km WSW of Adak, Alaska · 24.1 kmM 2.7 · 169 km SW of Adak, Alaska · 21.4 km
M 5.3 · 151 km WSW of Adak, Alaska100 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

Quake Pulse

USGS data evolution

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

Revisions9
Magnitude change+0.0M 5.3 → M 5.3
Depth change+0.0 km
Last update39997 min
2026-09-11 11:00:48 UTC2026-09-12 04:57:17 UTC

Revision history

Observed changes stored by Quake Pulse.

Mise à jourMagnitudeDepthStatus
2026-09-11 11:00:48 UTC5.340.892 kmreviewed
2026-09-11 11:07:16 UTC5.340.892 kmreviewed
2026-09-11 11:27:19 UTC5.340.892 kmreviewed
2026-09-11 11:47:27 UTC5.340.892 kmreviewed
2026-09-11 12:57:23 UTC5.340.892 kmreviewed
2026-09-11 14:57:14 UTC5.340.892 kmreviewed
2026-09-11 16:57:18 UTC5.340.892 kmreviewed
2026-09-11 22:57:16 UTC5.340.892 kmreviewed
2026-09-12 04:57:17 UTC5.340.892 kmreviewed

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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