Updated 2026-09-09 13:52:46 UTC

M 1.8 — 15 km S of Susitna, Alaska

Magnitude 1.8, depth 73.0 km, 2026-09-09 13:51:13 UTC.

MagnitudeM 1.8
Depth73.0 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 1.8 at 73.0 km depth.
Counts describe detected earthquakes and are not a forecast or hazard assessment.
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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#194,553
Magnitude rank in country#10,315
M4.5+ within 250 km, ±15 days0
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 significance50
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.

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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 1.8 · 15 km S of Susitna, Alaska · 50 kmInteractive 3D view of earthquakes within 50 km of M 1.8 · 15 km S of Susitna, Alaska.M 1.8 · 15 km S of Susitna, AlaskaM 2.8 · 5 km WSW of Willow, Alaska · 41.7 kmM 1.6 · 25 km NE of Beluga, Alaska · 15.9 kmM 1.8 · 16 km W of Willow, Alaska · 37.8 kmM 1.7 · 10 km WSW of Susitna, Alaska · 12.1 kmM 1.8 · 8 km SW of Anchorage, Alaska · 40.3 kmM 2.3 · 28 km SW of Susitna, Alaska · 21.8 kmM 1.7 · 25 km SSW of Susitna, Alaska · 11.5 kmM 1.7 · 9 km WNW of Point MacKenzie, Alaska · 22.0 kmM 1.6 · 27 km SW of Susitna, Alaska · 20.9 kmM 2.2 · 8 km W of Willow, Alaska · 41.4 kmM 1.5 · 4 km SW of Willow, Alaska · 41.8 kmM 3.4 · 4 km NE of Big Lake, Alaska · 37.4 kmM 1.9 · 31 km WNW of Willow, Alaska · 49.3 kmM 1.9 · 3 km SE of Houston, Alaska · 46.4 kmM 2.1 · 33 km N of Beluga, Alaska · 33.0 kmM 2.4 · 10 km NW of Big Lake, Alaska · 32.5 kmM 1.6 · 14 km WSW of Anchorage, Alaska · 31.2 kmM 2.1 · 9 km W of Point MacKenzie, Alaska · 21.0 kmM 2.1 · 8 km NNE of Susitna, Alaska · 23.2 kmM 2.0 · 24 km SSW of Anchorage, Alaska · 49.1 kmM 2.4 · 24 km ENE of Beluga, Alaska · 24.3 kmM 2.1 · 8 km NW of Houston, Alaska · 45.1 kmM 2.5 · 7 km WSW of Willow, Alaska · 41.0 kmM 0.7 · 44 km NNW of Beluga, Alaska · 45.5 kmM 0.6 · 43 km NNW of Beluga, Alaska · 45.0 kmM 1.9 · 6 km ENE of Big Lake, Alaska · 40.0 kmM 1.8 · 19 km SW of Point MacKenzie, Alaska · 22.5 kmM 2.1 · 7 km WNW of Houston, Alaska · 43.1 kmM 2.7 · 23 km SSW of Susitna, Alaska · 8.5 kmM 1.9 · 42 km W of Susitna, Alaska · 45.5 kmM 2.5 · 23 km SSW of Susitna, Alaska · 10.1 kmM 1.2 · 35 km W of Susitna, Alaska · 35.9 kmM 2.0 · 7 km SW of Willow, Alaska · 38.9 kmM 2.0 · 18 km WNW of Susitna, Alaska · 27.8 kmM 2.1 · 21 km SW of Anchorage, Alaska · 42.0 kmM 2.9 · 24 km WSW of Point MacKenzie, Alaska · 14.0 kmM 2.3 · 6 km W of Houston, Alaska · 41.1 kmM 2.2 · 3 km NNE of Houston, Alaska · 49.2 kmM 2.3 · 3 km ENE of Big Lake, Alaska · 37.2 kmM 1.6 · 25 km W of Susitna, Alaska · 29.5 kmM 2.2 · 4 km ESE of Big Lake, Alaska · 37.1 kmM 2.0 · 31 km SE of Skwentna, Alaska · 49.7 kmM 2.0 · 7 km WNW of Point MacKenzie, Alaska · 23.7 kmM 2.2 · 33 km SE of Skwentna, Alaska · 47.7 kmM 2.0 · 12 km SW of Big Lake, Alaska · 21.8 kmM 2.4 · 34 km ESE of Skwentna, Alaska · 49.2 kmM 1.5 · 5 km S of Point MacKenzie, Alaska · 31.3 kmM 2.0 · 13 km WNW of Willow, Alaska · 46.2 kmM 3.2 · 21 km SW of Susitna, Alaska · 11.0 kmM 2.4 · 9 km NNE of Susitna, Alaska · 24.8 kmM 1.8 · 11 km ESE of Susitna, Alaska · 17.9 kmM 2.6 · 3 km WNW of Big Lake, Alaska · 31.2 kmM 2.4 · 6 km NNW of Houston, Alaska · 47.8 kmM 2.3 · 22 km E of Beluga, Alaska · 26.0 kmM 1.8 · 19 km SW of Susitna, Alaska · 11.9 kmM 1.4 · 3 km NNW of Knik, Alaska · 42.9 kmM 1.8 · 27 km NNE of Point Possession, Alaska · 26.9 kmM 2.0 · 4 km NW of Big Lake, Alaska · 31.9 kmM 2.4 · 31 km WSW of Point MacKenzie, Alaska · 20.4 kmM 1.8 · 10 km WNW of Beluga, Alaska · 46.6 kmM 1.8 · 40 km W of Susitna, Alaska · 44.2 kmM 1.8 · 13 km ENE of Susitna, Alaska · 25.2 kmM 2.1 · 29 km NNW of Susitna, Alaska · 42.8 kmM 2.1 · 3 km SSE of Big Lake, Alaska · 33.7 kmM 1.6 · 3 km WNW of Big Lake, Alaska · 31.2 kmM 1.1 · 36 km SSE of Skwentna, Alaska · 46.8 kmM 1.6 · 9 km N of Susitna, Alaska · 24.2 kmM 1.5 · 4 km NNE of Big Lake, Alaska · 37.5 kmM 1.8 · 2 km WNW of Point MacKenzie, Alaska · 27.7 kmM 1.2 · 36 km W of Susitna, Alaska · 35.6 kmM 2.2 · 5 km E of Big Lake, Alaska · 38.9 kmM 2.4 · 6 km SE of Houston, Alaska · 46.5 kmM 1.3 · 35 km NNW of Beluga, Alaska · 47.7 kmM 1.9 · 42 km NNW of Beluga, Alaska · 44.8 kmM 1.7 · 6 km ESE of Susitna, Alaska · 14.9 kmM 2.9 · 25 km ENE of Beluga, Alaska · 19.0 kmM 1.7 · 28 km S of Susitna, Alaska · 13.3 kmM 1.7 · 17 km ESE of Beluga, Alaska · 35.6 kmM 1.5 · 3 km NE of Big Lake, Alaska · 37.0 kmM 2.9 · 3 km N of Anchorage, Alaska · 37.7 kmM 1.7 · 1 km NW of Houston, Alaska · 45.6 kmM 1.9 · 13 km W of Susitna, Alaska · 18.6 kmM 1.6 · 11 km ESE of Tyonek, Alaska · 48.8 kmM 2.1 · 20 km NE of Point Possession, Alaska · 37.4 kmM 1.4 · 6 km SSE of Big Lake, Alaska · 33.5 kmM 2.1 · 11 km W of Willow, Alaska · 39.1 kmM 1.6 · 14 km NNW of Point Possession, Alaska · 41.6 kmM 1.8 · 11 km E of Tyonek, Alaska · 43.9 kmM 1.5 · 16 km WNW of Point MacKenzie, Alaska · 15.3 kmM 2.0 · 27 km NNW of Susitna, Alaska · 41.8 kmM 1.7 · 14 km N of Point Possession, Alaska · 40.6 kmM 1.7 · 14 km N of Point Possession, Alaska · 40.6 kmM 2.1 · 5 km SE of Houston, Alaska · 47.3 kmM 2.3 · 40 km NNW of Beluga, Alaska · 49.5 kmM 2.0 · 5 km NNE of Susitna, Alaska · 20.5 kmM 1.8 · 13 km S of Willow, Alaska · 35.3 kmM 1.7 · 19 km WNW of Susitna, Alaska · 29.6 kmM 1.8 · 10 km NE of Susitna, Alaska · 24.2 kmM 2.3 · 14 km WNW of Point MacKenzie, Alaska · 17.6 kmM 2.1 · 22 km W of Anchorage, Alaska · 26.4 km
M 1.8 · 15 km S of Susitna, Alaska50 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 · 50 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 1.8 → M 1.8
Depth change+0.0 km
Last update57776 min
2026-09-09 13:52:46 UTC2026-09-09 13:52:46 UTC

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Putting this earthquake in context

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Interpret the numbers

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