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Updated 2026-10-07 16:58:12 UTC

M 5.5 — 92 km NNW of Aleneva, Alaska

Magnitude 5.5, depth 87.6 km, 2026-10-06 18:34:31 UTC.

MagnitudeM 5.5
Depth87.6 km
Felt reports341
Statusreviewed
TsunamiNo

United States → · Alaska → · Aleneva →

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 5.5 at 87.6 km depth.
  • 341 felt report(s) are associated with the USGS record.
  • The available PAGER level is GREEN.
  • The solution has already been revised 43 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#10,412
Magnitude rank in country#426
M4.5+ within 250 km, ±15 days0
Quake Pulse

Impact and context

Descriptive indicators available for this event and its surroundings.

38/100Moderate context
Felt reports341
Max felt intensity (CDI)4.6
Instrumental intensity (MMI)4.2
PAGER alertGREEN
Tsunami indicator—
USGS significance622
Depth contextIntermediate
Nearby major city—
250 km

Local historical context

Descriptive comparison with earlier events within 250 km.

M4.5+ in previous year4Earlier local maximumM 5.4
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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.

50 km100 km250 km
M 5.5 · 92 km NNW of Aleneva, Alaska · 100 kmInteractive 3D view of earthquakes within 100 km of M 5.5 · 92 km NNW of Aleneva, Alaska.M 5.5 · 92 km NNW of Aleneva, AlaskaM 0.8 · 86 km NNW of Karluk, Alaska · 97.6 kmM 0.7 · 84 km NNW of Karluk, Alaska · 97.1 kmM 1.5 · 49 km WNW of Nanwalek, Alaska · 91.1 kmM 1.7 · 61 km ESE of Pedro Bay, Alaska · 96.1 kmM 1.1 · 98 km SSE of Kokhanok, Alaska · 44.2 kmM -0.1 · 86 km NNW of Karluk, Alaska · 98.2 kmM 1.9 · 74 km WNW of Aleneva, Alaska · 51.1 kmM 0.9 · 76 km NNW of Karluk, Alaska · 97.8 kmM 1.7 · 50 km SSW of Nanwalek, Alaska · 79.4 kmM 1.2 · 91 km N of Karluk, Alaska · 75.9 kmM 1.5 · 69 km SE of Pope-Vannoy Landing, Alaska · 31.2 kmM 2.8 · 50 km W of Nanwalek, Alaska · 83.2 kmM -0.3 · 85 km NNW of Karluk, Alaska · 99.1 kmM 1.5 · 40 km WNW of Nanwalek, Alaska · 92.8 kmM 0.7 · 85 km NNW of Karluk, Alaska · 97.5 kmM 1.6 · 59 km SE of Pope-Vannoy Landing, Alaska · 47.0 kmM 1.5 · 92 km SSE of Kokhanok, Alaska · 34.5 kmM 2.0 · 61 km SE of Pope-Vannoy Landing, Alaska · 48.9 kmM 1.5 · 28 km WSW of Nanwalek, Alaska · 85.9 kmM -0.2 · 91 km N of Karluk, Alaska · 69.2 kmM 1.5 · 90 km SE of Kokhanok, Alaska · 7.2 kmM 0.6 · 83 km NNW of Karluk, Alaska · 98.0 kmM 1.6 · 39 km SW of Nanwalek, Alaska · 79.0 kmM 1.7 · 92 km SE of Kokhanok, Alaska · 6.8 kmM 1.8 · 68 km SSE of Kokhanok, Alaska · 39.3 kmM 2.0 · 92 km NNW of Aleneva, Alaska · 4.3 kmM 0.5 · 92 km SE of Kokhanok, Alaska · 8.1 kmM 2.2 · 36 km NNW of Aleneva, Alaska · 56.6 kmM 1.7 · 50 km NNE of Karluk, Alaska · 95.9 kmM 1.7 · 91 km SE of Kokhanok, Alaska · 13.9 kmM 1.3 · 91 km NNW of Karluk, Alaska · 84.9 kmM 1.8 · 94 km SE of Kokhanok, Alaska · 4.8 kmM 1.2 · 97 km WNW of Aleneva, Alaska · 49.9 kmM 0.6 · 98 km ESE of King Salmon, Alaska · 88.0 kmM 1.9 · 90 km SE of Kokhanok, Alaska · 8.8 kmM -0.3 · 91 km NNW of Karluk, Alaska · 89.9 kmM 1.8 · 17 km S of Kokhanok, Alaska · 85.5 kmM 0.1 · 81 km NNW of Karluk, Alaska · 96.2 kmM 1.5 · 61 km SE of Pedro Bay, Alaska · 61.2 kmM 1.5 · 61 km N of Larsen Bay, Alaska · 81.4 kmM 1.0 · 85 km NNW of Karluk, Alaska · 97.9 kmM 0.7 · 85 km NNW of Karluk, Alaska · 99.4 kmM 0.2 · 102 km NNW of Karluk, Alaska · 84.2 kmM -0.2 · 97 km NNW of Karluk, Alaska · 79.9 kmM 2.0 · 41 km SW of Nanwalek, Alaska · 76.7 kmM 1.9 · 29 km W of Aleneva, Alaska · 84.8 kmM 0.4 · 92 km SE of Kokhanok, Alaska · 8.2 kmM 0.6 · 74 km NNW of Karluk, Alaska · 98.7 kmM 0.9 · 81 km NNW of Karluk, Alaska · 99.4 kmM -0.3 · 85 km NNW of Karluk, Alaska · 95.0 kmM 0.6 · 83 km NNW of Karluk, Alaska · 96.7 kmM 2.1 · 16 km SSE of Kokhanok, Alaska · 83.9 kmM 0.7 · 84 km NNW of Karluk, Alaska · 97.8 kmM 2.0 · 49 km WNW of Nanwalek, Alaska · 93.2 kmM 2.4 · 71 km NE of Aleneva, Alaska · 83.0 kmM 2.1 · 54 km WNW of Aleneva, Alaska · 53.6 kmM 1.6 · 45 km SE of Pedro Bay, Alaska · 77.7 kmM -0.2 · 76 km NNW of Karluk, Alaska · 97.5 kmM 1.9 · 54 km WNW of Nanwalek, Alaska · 91.1 kmM 2.0 · 69 km N of Aleneva, Alaska · 54.0 kmM 1.9 · 33 km WSW of Nanwalek, Alaska · 81.8 kmM -0.5 · 82 km NNW of Karluk, Alaska · 99.2 kmM -0.1 · 103 km ESE of King Salmon, Alaska · 83.7 kmM 1.8 · 86 km SSE of Igiugig, Alaska · 87.8 kmM 1.9 · 42 km WSW of Nanwalek, Alaska · 72.9 kmM -0.4 · 86 km NNW of Karluk, Alaska · 98.4 kmM 0.9 · 86 km NNW of Karluk, Alaska · 97.4 kmM 0.7 · 86 km NNW of Karluk, Alaska · 97.8 kmM 2.4 · 70 km SE of Kokhanok, Alaska · 27.4 kmM -0.3 · 82 km NNW of Karluk, Alaska · 99.6 kmM 1.9 · 16 km WNW of Aleneva, Alaska · 79.8 kmM 1.3 · 84 km NNW of Karluk, Alaska · 98.9 kmM 0.7 · 85 km NNW of Karluk, Alaska · 99.8 kmM 2.5 · 71 km WSW of Nanwalek, Alaska · 49.0 kmM 0.9 · 86 km NNW of Karluk, Alaska · 98.2 kmM 0.8 · 85 km NNW of Karluk, Alaska · 98.5 kmM 1.8 · 25 km SSW of Nanwalek, Alaska · 96.5 kmM -0.1 · 89 km NNW of Karluk, Alaska · 91.9 kmM 0.8 · 86 km NNW of Karluk, Alaska · 98.1 kmM 1.8 · 75 km SW of Nanwalek, Alaska · 54.2 kmM 1.9 · 67 km NW of Aleneva, Alaska · 45.1 kmM -0.3 · 76 km NNW of Karluk, Alaska · 94.7 kmM -0.6 · 97 km N of Karluk, Alaska · 67.2 kmM -0.4 · 88 km NNW of Karluk, Alaska · 97.4 kmM -0.2 · 87 km NNW of Karluk, Alaska · 97.6 kmM 1.1 · 54 km SE of Pedro Bay, Alaska · 71.7 kmM 0.7 · 87 km NNW of Karluk, Alaska · 97.0 kmM 0.7 · 74 km NNW of Karluk, Alaska · 97.7 kmM 1.1 · 79 km NNW of Karluk, Alaska · 95.4 kmM 2.3 · 64 km SE of Pope-Vannoy Landing, Alaska · 45.9 kmM 0.0 · 87 km NNW of Karluk, Alaska · 97.6 kmM 2.1 · 68 km SSW of Nanwalek, Alaska · 60.3 kmM 0.9 · 85 km NNW of Karluk, Alaska · 98.2 kmM 2.3 · 69 km SSE of Kokhanok, Alaska · 48.0 kmM 2.7 · 34 km ESE of Pedro Bay, Alaska · 96.7 kmM 2.0 · 71 km N of Aleneva, Alaska · 54.9 kmM 0.1 · 81 km NNW of Karluk, Alaska · 98.7 kmM 3.4 · 33 km W of Nanwalek, Alaska · 91.9 kmM 2.1 · 67 km SSE of Kokhanok, Alaska · 53.6 kmM 1.8 · 54 km WNW of Nanwalek, Alaska · 85.1 km
M 5.5 · 92 km NNW of Aleneva, 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

M 0.886 km NNW of Karluk, Alaska97.6 km · 2026-10-09 14:35:59 UTCM 0.784 km NNW of Karluk, Alaska97.1 km · 2026-10-09 13:41:15 UTCM 1.549 km WNW of Nanwalek, Alaska91.1 km · 2026-10-09 13:37:05 UTCM 1.761 km ESE of Pedro Bay, Alaska96.1 km · 2026-10-09 05:57:05 UTCM 1.198 km SSE of Kokhanok, Alaska44.2 km · 2026-10-09 03:10:40 UTCM -0.186 km NNW of Karluk, Alaska98.2 km · 2026-10-09 02:37:24 UTCM 1.974 km WNW of Aleneva, Alaska51.1 km · 2026-10-09 01:48:06 UTCM 0.976 km NNW of Karluk, Alaska97.8 km · 2026-10-08 23:00:36 UTC
Quake Pulse

USGS data evolution

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

Revisions43
Magnitude change+0.0M 5.5 → M 5.5
Depth change+0.0 km
Last update3277 min
2026-10-06 18:42:45 UTC2026-10-07 16:58:12 UTC

Revision history

Observed changes stored by Quake Pulse.

Mise à jourMagnitudeDepthStatus
2026-10-06 18:42:45 UTC5.587.6 kmreviewed
2026-10-06 18:49:30 UTC5.587.6 kmreviewed
2026-10-06 18:51:23 UTC5.587.6 kmreviewed
2026-10-06 18:57:51 UTC5.587.6 kmreviewed
2026-10-06 19:03:50 UTC5.587.6 kmreviewed
2026-10-06 19:06:47 UTC5.587.6 kmreviewed
2026-10-06 19:13:49 UTC5.587.6 kmreviewed
2026-10-06 19:18:43 UTC5.587.6 kmreviewed
2026-10-06 19:21:50 UTC5.587.6 kmreviewed
2026-10-06 19:25:32 UTC5.587.6 kmreviewed
2026-10-06 19:33:44 UTC5.587.6 kmreviewed
2026-10-06 19:37:47 UTC5.587.6 kmreviewed
2026-10-06 19:40:43 UTC5.587.6 kmreviewed
2026-10-06 19:48:35 UTC5.587.6 kmreviewed
2026-10-06 19:50:35 UTC5.587.6 kmreviewed
2026-10-06 20:01:29 UTC5.587.6 kmreviewed
2026-10-06 20:07:49 UTC5.587.6 kmreviewed
2026-10-06 20:13:37 UTC5.587.6 kmreviewed
2026-10-06 20:17:40 UTC5.587.6 kmreviewed
2026-10-06 20:25:09 UTC5.587.6 kmreviewed
2026-10-06 20:31:38 UTC5.587.6 kmreviewed
2026-10-06 20:39:17 UTC5.587.6 kmreviewed
2026-10-06 20:44:42 UTC5.587.6 kmreviewed
2026-10-06 20:53:11 UTC5.587.6 kmreviewed
2026-10-06 20:58:42 UTC5.587.6 kmreviewed
2026-10-06 21:05:36 UTC5.587.6 kmreviewed
2026-10-06 21:10:27 UTC5.587.6 kmreviewed
2026-10-06 21:17:35 UTC5.587.6 kmreviewed
2026-10-06 22:44:38 UTC5.587.6 kmreviewed
2026-10-07 00:44:34 UTC5.587.6 kmreviewed
2026-10-07 03:47:44 UTC5.587.6 kmreviewed
2026-10-07 05:08:29 UTC5.587.6 kmreviewed
2026-10-07 05:24:04 UTC5.587.6 kmreviewed
2026-10-07 05:44:49 UTC5.587.6 kmreviewed
2026-10-07 06:03:13 UTC5.587.6 kmreviewed
2026-10-07 06:23:14 UTC5.587.6 kmreviewed
2026-10-07 06:44:40 UTC5.587.6 kmreviewed
2026-10-07 11:40:02 UTC5.587.6 kmreviewed
2026-10-07 12:44:47 UTC5.587.6 kmreviewed
2026-10-07 15:15:37 UTC5.587.6 kmreviewed
2026-10-07 15:49:53 UTC5.587.6 kmreviewed
2026-10-07 16:42:54 UTC5.587.6 kmreviewed
2026-10-07 16:58:12 UTC5.587.6 kmreviewed

Explore related context

Related or nearby earthquakes

M 2.0 · 92 km NNW of Aleneva, Alaska4 km · 2026-10-07 10:35:57 UTCM 1.8 · 94 km SE of Kokhanok, Alaska5 km · 2026-10-06 19:21:53 UTCM 1.7 · 92 km SE of Kokhanok, Alaska7 km · 2026-10-07 17:51:07 UTCM 1.5 · 90 km SE of Kokhanok, Alaska7 km · 2026-10-08 01:51:45 UTC

Geographic context

CountryUnited States →Nearby cityAleneva →

From the blog

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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.

Read the methodology →

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