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United States · Washington

M4.3 Earthquake near Kitsap County, Washington (United States)

UTC time: 2026-09-29 21:05:56 UTC Local time: —
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded Content updated:

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.

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About this earthquake

On September 29, 2026 at 21:05 UTC, a magnitude M4.3 earthquake occurred near Kitsap County, Washington (United States). With a focal depth of about 27 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Tremors of this size are distinctly felt and can occasionally cause light damage.

The data is provided by USGS and cross-checked across seismological networks. United States: 162 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

ID
263f3cace3c9f6550b1e754ad80b9c38138f16c6
Magnitude
M4.3
Depth
27.0 km
UTC time
2026-09-29 21:05:56 UTC
Local time
—
Country
United States
State
Washington
City
Kitsap County
County
Kitsap County
Source
usgs
Coordinates
47.40467, -122.70583
Temperature
17.2°C

Depth profile

Depth profile Depth: 27 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 27 km
Shallow
27 km
27 km — deeper than the regional average (15.3 km)
Regional average: 15.3 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Felt reports

31felt reports at EMSC / LastQuake

Voluntary reports of feeling this earthquake. The count is not an intensity measurement and is not added to USGS DYFI reports.

Data updated: Sep 29, 2026, 10:54 PM UTC · Last checked: Oct 28, 2026, 9:37 AM UTC

Source: EMSC / LastQuake

Official USGS aftershock forecast

Probability of at least one aftershock at or above the specified magnitude during the entire stated time window. This does not predict an individual earthquake.

Issued: Oct 27, 2026, 9:05 PM UTC · Last checked: Oct 28, 2026, 9:37 AM UTC

Oct 27, 2026, 10:00 PM UTC – Oct 28, 2026, 10:00 PM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.00.57 %0–0
M ≥ 4.00.06 %0–0
M ≥ 5.0< 0.01 %0–0
M ≥ 6.0< 0.01 %0–0
M ≥ 7.0< 0.01 %0–0
Oct 27, 2026, 10:00 PM UTC – Nov 3, 2026, 10:00 PM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.03.53 %0–1
M ≥ 4.00.37 %0–0
M ≥ 5.00.04 %0–0
M ≥ 6.0< 0.01 %0–0
M ≥ 7.0< 0.01 %0–0
Oct 27, 2026, 10:00 PM UTC – Nov 26, 2026, 10:00 PM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.010.74 %0–1
M ≥ 4.01.25 %0–0
M ≥ 5.00.13 %0–0
M ≥ 6.00.01 %0–0
M ≥ 7.0< 0.01 %0–0
Oct 27, 2026, 10:00 PM UTC – Oct 27, 2027, 10:00 PM UTC
MagnitudeProbability ≥ 1Count (95% interval)
M ≥ 3.032.05 %0–4
M ≥ 4.05.17 %0–1
M ≥ 5.00.56 %0–0
M ≥ 6.00.06 %0–0
M ≥ 7.0< 0.01 %0–0

The range is the 95% forecast interval for the number of earthquakes. Magnitude thresholds and time windows overlap: do not add the values. Windows already in progress still refer to the entire stated period.

Source: USGS — Operational Aftershock Forecast

Volcanoes nearby

  • Rainier
    Distance: 94 km ·Stratovolcano ·Elevation: 4'392 m ·Last eruption: 1450 ·United States
  • St. Helens
    Distance: 140 km ·Stratovolcano ·Elevation: 2'549 m ·Last eruption: 2008 ·United States
  • Glacier Peak
    Distance: 143 km ·Stratovolcano ·Elevation: 3'213 m ·Last eruption: 1700 ·United States
  • Adams
    Distance: 162 km ·Stratovolcano ·Elevation: 3'742 m ·Last eruption: 950 ·United States
  • Baker
    Distance: 166 km ·Stratovolcano(es) ·Elevation: 3'285 m ·Last eruption: 1880 ·United States
  • West Crater
    Distance: 176 km ·Volcanic field ·Elevation: 1'329 m ·Last eruption: -5750 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Tacoma Narrows AirportUnited States · TIW · KTIW
    18.1 kmStraight-line distance
  • Seattle–Tacoma International AirportUnited States · SEA · KSEA
    30.1 kmStraight-line distance
  • King County International Airport - Boeing FieldUnited States · BFI · KBFI
    33.4 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-10-28

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

United States

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 3.0 · 1,428 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

Historic earthquake map · United States

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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