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M1.9 Depth: 1.1 km

M1.9 Earthquake near Napa County, California (United States)

UTC time: 2026-08-28 16:44:55 UTC Local time: —

About this earthquake

A magnitude M1.9 earthquake was recorded near Napa County, California (United States) on August 28, 2026 at 16:44 UTC. The hypocenter lay relatively close to the surface at around 1 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 192 earthquakes, the strongest at M4.4.

Details

Magnitude
M1.9
Depth
1.1 km
UTC time
2026-08-28 16:44:55 UTC
Local time
—
Country
United States
State
California
City
Napa County
County
Napa County
Source
usgs
Coordinates
38.74183, -122.43333
Temperature
19.6°C

Map

Depth profile

Depth profile Depth: 1.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 1.1 km
Shallow
1.1 km
1.1 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

Volcanoes nearby

  • Clear Lake Volcanic Field
    Distance: 39 km ·Volcanic field ·Elevation: 1'439 m ·United States
  • Lassen Volcanic Center
    Distance: 210 km ·Stratovolcano ·Elevation: 3'187 m ·Last eruption: 1917 ·United States
  • Shasta
    Distance: 297 km ·Stratovolcano ·Elevation: 4'317 m ·Last eruption: 1250 ·United States
  • Mono Lake Volcanic Field
    Distance: 308 km ·Volcanic field ·Elevation: 2'121 m ·Last eruption: 1790 ·United States
  • Mono-Inyo Craters
    Distance: 315 km ·Lava dome(s) ·Elevation: 2'796 m ·Last eruption: 1380 ·United States
  • Soda Lakes
    Distance: 319 km ·Maar(s) ·Elevation: 1'251 m ·United States

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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