Updated 2026-10-09 22:15:35 UTC

M 1.9 — 63 km E of Port Alsworth, Alaska

Magnitude 1.9, depth 154.0 km, 2026-10-09 22:06:37 UTC.

MagnitudeM 1.9
Depth154.0 km
Felt reports—
Statusautomatic
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 1.9 at 154.0 km depth.
  • The solution has already been revised 3 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#192,770
Magnitude rank in country#8,924
M4.5+ within 250 km, ±15 days1
Quake Pulse

Impact and context

Descriptive indicators available for this event and its surroundings.

0/100Limited context
Felt reports—
Max felt intensity (CDI)—
Instrumental intensity (MMI)—
PAGER alertNot available
Tsunami indicator—
USGS significance56
Depth contextIntermediate
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 1.9 · 63 km E of Port Alsworth, Alaska · 100 kmInteractive 3D view of earthquakes within 100 km of M 1.9 · 63 km E of Port Alsworth, Alaska.M 1.9 · 63 km E of Port Alsworth, AlaskaM 1.8 · 26 km WNW of Cohoe, Alaska · 83.3 kmM 2.0 · 11 km WNW of Anchor Point, Alaska · 73.8 kmM 2.6 · 70 km WNW of Happy Valley, Alaska · 14.8 kmM 1.5 · 49 km WNW of Nanwalek, Alaska · 76.9 kmM 1.8 · 21 km W of Happy Valley, Alaska · 62.2 kmM 1.8 · 23 km W of Anchor Point, Alaska · 63.5 kmM 1.6 · 24 km WNW of Clam Gulch, Alaska · 78.7 kmM -0.7 · 65 km ENE of Pedro Bay, Alaska · 11.0 kmM 0.2 · 68 km ENE of Pedro Bay, Alaska · 11.2 kmM 1.7 · 61 km ESE of Pedro Bay, Alaska · 58.9 kmM 0.1 · 62 km ENE of Pedro Bay, Alaska · 16.1 kmM 1.7 · 8 km NW of Ninilchik, Alaska · 77.0 kmM 0.3 · 65 km ENE of Pedro Bay, Alaska · 11.5 kmM 0.6 · 51 km ENE of Pedro Bay, Alaska · 15.6 kmM -0.9 · 62 km ENE of Pedro Bay, Alaska · 17.2 kmM 0.9 · 57 km W of Salamatof, Alaska · 64.5 kmM 0.3 · 68 km ENE of Pedro Bay, Alaska · 6.3 kmM 2.4 · 4 km WNW of Diamond Ridge, Alaska · 99.9 kmM -0.9 · 63 km ENE of Pedro Bay, Alaska · 13.1 kmM -0.4 · 65 km ENE of Pedro Bay, Alaska · 13.6 kmM 1.2 · 24 km NNW of Ninilchik, Alaska · 71.1 kmM 0.1 · 65 km WNW of Anchor Point, Alaska · 22.7 kmM 1.5 · 31 km WNW of Anchor Point, Alaska · 55.7 kmM -0.8 · 63 km ENE of Pedro Bay, Alaska · 15.7 kmM 2.8 · 50 km W of Nanwalek, Alaska · 83.4 kmM 1.5 · 40 km WNW of Nanwalek, Alaska · 82.9 kmM -0.9 · 63 km ENE of Pedro Bay, Alaska · 16.2 kmM 2.2 · 78 km NE of Port Alsworth, Alaska · 53.0 kmM 0.5 · 73 km NW of Ninilchik, Alaska · 42.0 kmM 1.2 · 60 km WSW of Anchor Point, Alaska · 58.7 kmM 3.1 · 55 km ENE of Pedro Bay, Alaska · 20.4 kmM -1.0 · 63 km ENE of Pedro Bay, Alaska · 12.5 kmM -0.8 · 64 km ENE of Pedro Bay, Alaska · 10.9 kmM 0.6 · 63 km ENE of Pedro Bay, Alaska · 14.4 kmM -0.2 · 62 km ENE of Pedro Bay, Alaska · 13.3 kmM 1.3 · 66 km WNW of Nikiski, Alaska · 87.5 kmM -0.8 · 63 km ENE of Pedro Bay, Alaska · 14.8 kmM -0.6 · 62 km ENE of Pedro Bay, Alaska · 17.4 kmM 1.7 · 47 km W of Salamatof, Alaska · 72.7 kmM -0.8 · 64 km ENE of Pedro Bay, Alaska · 12.7 kmM 1.0 · 46 km E of Port Alsworth, Alaska · 17.3 kmM 0.7 · 60 km E of Port Alsworth, Alaska · 3.3 kmM 0.5 · 73 km WNW of Happy Valley, Alaska · 10.6 kmM 0.5 · 64 km ENE of Pedro Bay, Alaska · 14.0 kmM 2.8 · 16 km WSW of Anchor Point, Alaska · 74.8 kmM 1.8 · 49 km WNW of Ninilchik, Alaska · 42.7 kmM 0.3 · 56 km ENE of Pedro Bay, Alaska · 16.8 kmM 1.9 · 45 km NW of Nanwalek, Alaska · 70.7 kmM 1.3 · 49 km E of Pedro Bay, Alaska · 31.9 kmM 0.1 · 65 km ENE of Pedro Bay, Alaska · 13.0 kmM 1.7 · 38 km WNW of Clam Gulch, Alaska · 65.4 kmM 1.7 · 65 km WNW of Ninilchik, Alaska · 20.2 kmM -0.8 · 65 km ENE of Pedro Bay, Alaska · 11.1 kmM -0.7 · 64 km ENE of Pedro Bay, Alaska · 12.3 kmM 2.0 · 48 km NE of Pedro Bay, Alaska · 17.6 kmM -0.4 · 62 km ENE of Pedro Bay, Alaska · 14.5 kmM 0.3 · 60 km WNW of Ninilchik, Alaska · 37.9 kmM 1.6 · 58 km WNW of Anchor Point, Alaska · 33.8 kmM -0.7 · 65 km ENE of Pedro Bay, Alaska · 9.3 kmM 1.0 · 58 km W of Anchor Point, Alaska · 36.1 kmM -0.8 · 68 km ENE of Pedro Bay, Alaska · 12.9 kmM -0.8 · 75 km NW of Ninilchik, Alaska · 46.4 kmM 0.8 · 46 km ENE of Pedro Bay, Alaska · 31.2 kmM -1.1 · 61 km ENE of Pedro Bay, Alaska · 15.8 kmM -1.2 · 64 km ENE of Pedro Bay, Alaska · 12.1 kmM 1.5 · 61 km SE of Pedro Bay, Alaska · 90.3 kmM 1.1 · 56 km W of Salamatof, Alaska · 69.1 kmM 1.7 · 55 km W of Anchor Point, Alaska · 52.9 kmM -1.0 · 65 km ENE of Pedro Bay, Alaska · 10.9 kmM -1.2 · 61 km ENE of Pedro Bay, Alaska · 16.4 kmM -0.9 · 61 km ENE of Pedro Bay, Alaska · 15.7 kmM -0.9 · 64 km ENE of Pedro Bay, Alaska · 13.2 kmM 0.9 · 64 km NW of Ninilchik, Alaska · 52.7 kmM -0.6 · 62 km ENE of Pedro Bay, Alaska · 10.0 kmM 2.1 · 51 km WSW of Salamatof, Alaska · 66.6 kmM 0.6 · 56 km WNW of Ninilchik, Alaska · 31.2 kmM -0.8 · 63 km ENE of Pedro Bay, Alaska · 12.2 kmM 0.6 · 69 km WNW of Ninilchik, Alaska · 30.9 kmM -0.7 · 76 km NW of Ninilchik, Alaska · 41.5 kmM -0.5 · 75 km NW of Ninilchik, Alaska · 41.8 kmM -0.8 · 62 km ENE of Pedro Bay, Alaska · 14.9 kmM 0.4 · 58 km ENE of Pedro Bay, Alaska · 15.9 kmM -1.3 · 66 km ENE of Pedro Bay, Alaska · 10.2 kmM 0.3 · 61 km ENE of Pedro Bay, Alaska · 13.4 kmM 0.2 · 63 km ENE of Pedro Bay, Alaska · 9.1 kmM 0.3 · 63 km ENE of Pedro Bay, Alaska · 16.0 kmM 1.8 · 47 km ENE of Pedro Bay, Alaska · 30.6 kmM 0.5 · 53 km ENE of Pedro Bay, Alaska · 23.5 kmM 0.7 · 65 km ENE of Pedro Bay, Alaska · 17.3 kmM 2.6 · 70 km WNW of Happy Valley, Alaska · 13.2 kmM 3.0 · 50 km WNW of Ninilchik, Alaska · 39.2 kmM 0.4 · 63 km ENE of Pedro Bay, Alaska · 13.3 kmM -0.1 · 63 km ENE of Pedro Bay, Alaska · 15.0 kmM 1.2 · 69 km ENE of Pedro Bay, Alaska · 14.8 kmM -0.9 · 59 km ENE of Pedro Bay, Alaska · 16.8 kmM 1.9 · 53 km ESE of Pedro Bay, Alaska · 52.2 kmM 1.8 · 43 km W of Anchor Point, Alaska · 54.9 kmM 2.4 · 49 km ENE of Pedro Bay, Alaska · 28.9 kmM 0.8 · 76 km ENE of Port Alsworth, Alaska · 28.0 kmM 2.6 · 18 km WNW of Clam Gulch, Alaska · 83.6 km
M 1.9 · 63 km E of Port Alsworth, 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.

Revisions3
Magnitude change+0.6M 1.3 → M 1.9
Depth change+1.5 km
Last update80 min
2026-10-09 22:08:18 UTC2026-10-09 22:15:35 UTC

Revision history

Observed changes stored by Quake Pulse.

Mise à jourMagnitudeDepthStatus
2026-10-09 22:08:18 UTC1.3152.5 kmautomatic
2026-10-09 22:09:55 UTC1.6154 kmautomatic
2026-10-09 22:15:35 UTC1.9154 kmautomatic

Explore related context

Putting this earthquake in context

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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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