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United States · California

M5.6 Earthquake near Mendocino County, California (United States)

UTC time: 2026-06-24 15:10:41 UTC Local time: —

Earthquake newsQuakeMap24

Archive record · original publication time was not recorded Content updated: 2026-09-06 13:00:22 UTC

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

Magnitude

M5.6

Depth: 8.1 km
Source: USGS

California · Mendocino County

Country overview

Map

M5.6 Earthquake near Mendocino County, California (United States) · 2026-06-24 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.6 earthquake was recorded near Mendocino County, California (United States) on June 24, 2026 at 15:10 UTC. With a focal depth of about 8 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude can damage poorly built structures.

The data is provided by USGS and cross-checked across seismological networks. United States: 128 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

45bfe12ce5fc8b1cf7a2ed154cba7ec850ab2727

Magnitude

M5.6

Depth

8.1 km

UTC time

2026-06-24 15:10:41 UTC

Local time

—

Country

United States

State

California

City

Mendocino County

County

Mendocino County

Source

usgs

Coordinates

39.36367, -123.22933

Temperature

27.1°C

Depth profile

Shallow

8.1 km

8.1 km — shallower 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

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: Sep 30, 2026, 3:10 PM UTC · Last checked: Oct 5, 2026, 5:22 PM UTC

Updates are delayed. The last successfully retrieved data are shown.

Sep 30, 2026, 4:00 PM UTC – Oct 1, 2026, 4:00 PM UTC · Expired

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	0.66 %	0–0
M ≥ 4.0	0.07 %	0–0
M ≥ 5.0	< 0.01 %	0–0
M ≥ 6.0	< 0.01 %	0–0
M ≥ 7.0	< 0.01 %	0–0

Sep 30, 2026, 4:00 PM UTC – Oct 7, 2026, 4:00 PM UTC · Expired

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	4.42 %	0–1
M ≥ 4.0	0.45 %	0–0
M ≥ 5.0	0.05 %	0–0
M ≥ 6.0	< 0.01 %	0–0
M ≥ 7.0	< 0.01 %	0–0

Sep 30, 2026, 4:00 PM UTC – Oct 30, 2026, 4:00 PM UTC

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	16.10 %	0–1
M ≥ 4.0	1.74 %	0–0
M ≥ 5.0	0.18 %	0–0
M ≥ 6.0	0.02 %	0–0
M ≥ 7.0	< 0.01 %	0–0

Sep 30, 2026, 4:00 PM UTC – Sep 30, 2027, 4:00 PM UTC

Magnitude	Probability ≥ 1	Count (95% interval)
M ≥ 3.0	64.80 %	0–3
M ≥ 4.0	9.95 %	0–1
M ≥ 5.0	1.04 %	0–0
M ≥ 6.0	0.10 %	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

Estimated impact

Yellow Local impact possible.

Estimated population exposed

IV 67'221

V 62'031

VI 10'816

VII 9'723

≈ 20'539 people experienced strong to very strong shaking.

5'062 Felt reports · max reported intensity 6.8

Ground shaking

VII

Very strong · Intensity (MMI) VII

Moderate damage possible.

Tectonic context

Located on the North America Plate.

Near the boundary North America ↔ Pacific · about 47 km away

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation

Ukiah23.8 kmS15'917

Santa Rosa111.9 kmSE178'127

Sacramento173.4 kmSE524'943

GeoNames · CC BY 4.0

Volcanoes nearby

Clear Lake Volcanic Field

Distance: 59 km ·Volcanic field ·Elevation: 1'439 m ·United States
Lassen Volcanic Center

Distance: 193 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
Shasta

Distance: 244 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
Medicine Lake

Distance: 287 km ·Shield ·Elevation: 2'412 m ·Last eruption: 1060 ·United States
Soda Lakes

Distance: 374 km ·Maar(s) ·Elevation: 1'251 m ·United States
Mono Lake Volcanic Field

Distance: 395 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States

Subsequent earthquakes nearby

Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.

First 6 hours25

First 24 hours52

First 72 hours109

Strongest subsequent eventM5.8

California

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 3.0 · 239 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

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#1

Earlier events M≥417

Earlier events M≥51

Compared since2025-01-02

The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.

Strongest earlier events

M5.52026-06-24 15:10:40 UTC3.1 kmMendocino County M4.72025-01-02 02:34:04 UTC70.6 kmCobb M4.52026-01-13 21:10:54 UTC4.5 kmMendocino County M4.42026-01-13 21:10:54 UTC3.7 kmMendocino County M4.42025-05-26 08:17:57 UTC147.3 km51 km W of Shelter Cove, California

Historic earthquake map · United States

Open history map

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