Updated 2026-09-18 13:13:42 UTC

M 6.5 — 169 km W of Nikolski, Alaska

Magnitude 6.5, depth 98.0 km, 2026-09-17 14:19:52 UTC.

MagnitudeM 6.5
Depth98.0 km
Felt reports8
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 6.5 at 98.0 km depth.
  • 8 felt report(s) are associated with the USGS record.
  • The USGS tsunami flag is enabled for this event.
  • The available PAGER level is GREEN.
  • The solution has already been revised 22 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#994
Magnitude rank in country#41
M4.5+ within 250 km, ±15 days19
Quake Pulse

Impact and context

Descriptive indicators available for this event and its surroundings.

57/100High context
Felt reports8
Max felt intensity (CDI)3.4
Instrumental intensity (MMI)5.0
PAGER alertGREEN
Tsunami indicatorYES
USGS significance653
Depth contextIntermediate
Nearby major city—
250 km

Local historical context

Descriptive comparison with earlier events within 250 km.

M4.5+ in previous year50Earlier local maximumM 6.3
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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 6.5 · 169 km W of Nikolski, Alaska · 100 kmInteractive 3D view of earthquakes within 100 km of M 6.5 · 169 km W of Nikolski, Alaska.M 6.5 · 169 km W of Nikolski, AlaskaM 0.8 · 74 km WSW of Nikolski, Alaska · 96.8 kmM 0.8 · 71 km WSW of Nikolski, Alaska · 99.6 kmM 0.5 · 75 km WSW of Nikolski, Alaska · 95.4 kmM 3.7 · 155 km SW of Nikolski, Alaska · 86.5 kmM 3.5 · 158 km SW of Nikolski, Alaska · 87.1 kmM -0.5 · 72 km WSW of Nikolski, Alaska · 98.1 kmM 0.7 · 71 km W of Nikolski, Alaska · 98.9 kmM 0.3 · 69 km W of Nikolski, Alaska · 99.9 kmM 0.5 · 72 km W of Nikolski, Alaska · 97.8 kmM 0.6 · 71 km WSW of Nikolski, Alaska · 99.4 kmM 0.6 · 70 km WSW of Nikolski, Alaska · 99.9 kmM 1.0 · 70 km W of Nikolski, Alaska · 99.4 kmM 0.7 · 74 km W of Nikolski, Alaska · 95.5 kmM 3.9 · 167 km WSW of Nikolski, Alaska · 83.8 kmM 3.9 · 166 km WSW of Nikolski, Alaska · 71.8 kmM 0.6 · 72 km WSW of Nikolski, Alaska · 98.2 kmM 1.1 · 70 km W of Nikolski, Alaska · 99.8 kmM 1.2 · 71 km WSW of Nikolski, Alaska · 98.8 kmM 0.8 · 73 km WSW of Nikolski, Alaska · 97.6 kmM 3.6 · 167 km WSW of Nikolski, Alaska · 79.4 kmM 3.6 · 142 km SW of Nikolski, Alaska · 95.2 kmM 3.2 · 169 km WSW of Nikolski, Alaska · 70.9 kmM 3.5 · 168 km SW of Nikolski, Alaska · 88.9 kmM 4.6 · 102 km WSW of Nikolski, Alaska · 70.2 kmM 3.8 · 169 km WSW of Nikolski, Alaska · 81.0 kmM 3.8 · 166 km W of Nikolski, Alaska · 3.1 kmM 3.9 · 169 km WSW of Nikolski, Alaska · 73.4 kmM 4.1 · 173 km W of Nikolski, Alaska · 5.1 kmM 3.8 · 169 km WSW of Nikolski, Alaska · 55.7 kmM 3.5 · 163 km W of Nikolski, Alaska · 7.5 kmM 3.9 · 169 km WSW of Nikolski, Alaska · 78.8 kmM 6.4 · 163 km WSW of Nikolski, Alaska · 37.3 kmM 6.3 · 167 km W of Nikolski, Alaska · 6.0 kmM 3.9 · 167 km WSW of Nikolski, Alaska · 56.0 kmM 2.4 · 105 km WSW of Nikolski, Alaska · 66.7 kmM 2.7 · 168 km SW of Nikolski, Alaska · 90.0 kmM 1.0 · 70 km W of Nikolski, Alaska · 99.3 kmM 3.2 · 172 km WSW of Nikolski, Alaska · 77.5 km
M 6.5 · 169 km W of Nikolski, Alaska100 km38 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.

Revisions22
Magnitude change+0.0M 6.5 → M 6.5
Depth change-10.4 km
Last update30861 min
2026-09-17 14:42:09 UTC2026-09-18 13:13:42 UTC

Revision history

Observed changes stored by Quake Pulse.

Mise à jourMagnitudeDepthStatus
2026-09-17 14:42:09 UTC6.5108.383 kmreviewed
2026-09-17 14:48:29 UTC6.5108.383 kmreviewed
2026-09-17 14:54:07 UTC6.5108.383 kmreviewed
2026-09-17 14:59:06 UTC6.5111.666 kmreviewed
2026-09-17 15:03:59 UTC6.5111.666 kmreviewed
2026-09-17 15:07:33 UTC6.5111.666 kmreviewed
2026-09-17 15:12:05 UTC6.5111.666 kmreviewed
2026-09-17 15:20:08 UTC6.5111.666 kmreviewed
2026-09-17 15:35:51 UTC6.5111.666 kmreviewed
2026-09-17 15:59:17 UTC6.5111.666 kmreviewed
2026-09-17 16:24:22 UTC6.5111.666 kmreviewed
2026-09-17 16:28:19 UTC6.5111.666 kmreviewed
2026-09-17 16:29:55 UTC6.5111.666 kmreviewed
2026-09-17 18:29:58 UTC6.5111.666 kmreviewed
2026-09-17 20:29:55 UTC6.5111.666 kmreviewed
2026-09-17 21:17:55 UTC6.5111.666 kmreviewed
2026-09-17 22:05:03 UTC6.5111.666 kmreviewed
2026-09-18 02:30:05 UTC6.5111.666 kmreviewed
2026-09-18 08:30:07 UTC6.5111.666 kmreviewed
2026-09-18 13:03:19 UTC6.598 kmreviewed
2026-09-18 13:07:13 UTC6.598 kmreviewed
2026-09-18 13:13:42 UTC6.598 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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