Updated 2026-08-28 19:18:47 UTC

M 3.8 — 3 km N of San Leandro, CA

Magnitude 3.8, depth 5.6 km, 2026-08-13 15:30:04 UTC.

MagnitudeM 3.8
Depth5.6 km
Felt reports7876
Statusreviewed
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 3.8 at 5.6 km depth.
  • 7,876 felt report(s) are associated with the USGS record.
  • The available PAGER level is GREEN.
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#188,177
Magnitude rank in country#5,036
M4.5+ within 250 km, ±15 days0
Quake Pulse

Impact and context

Descriptive indicators available for this event and its surroundings.

21/100Limited context
Felt reports7,876
Max felt intensity (CDI)3.8
Instrumental intensity (MMI)4.2
PAGER alertGREEN
Tsunami indicator—
USGS significance607
Depth contextShallow
Nearby major citySan Francisco24 km · 808,000
250 km

Local historical context

Descriptive comparison with earlier events within 250 km.

M4.5+ in previous year0Earlier local maximum—

Nearby major city

Displayed population is the indexed city population, not an estimate of people exposed.

● Quake Pulse Alerts

Follow this area

Get an e-mail when a new earthquake matches your threshold.

Create an alert →

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 3.8 · 3 km N of San Leandro, CA · 100 kmInteractive 3D view of earthquakes within 100 km of M 3.8 · 3 km N of San Leandro, CA.M 3.8 · 3 km N of San Leandro, CAM 1.4 · 3 km N of Piedmont, CA · 13.3 kmM 1.2 · 1 km SE of Oakland, CA · 7.0 kmM 0.9 · 2 km ENE of Berkeley, CA · 16.4 kmM 3.4 · 9 km SW of Brentwood, CA · 33.4 kmM 1.5 · 3 km W of Dublin, CA · 17.2 kmM 1.5 · 7 km E of Santa Venetia, CA · 36.7 kmM 1.4 · 3 km W of Dublin, CA · 16.9 kmM 1.1 · 3 km W of Dublin, CA · 16.9 kmM 1.8 · 3 km W of Dublin, CA · 16.6 kmM 1.6 · 8 km WSW of Mountain House, CA · 46.0 kmM 1.0 · 20 km NE of Morgan Hill, CA · 82.2 kmM 1.5 · 3 km W of Dublin, CA · 16.5 kmM 2.2 · 3 km WNW of Dublin, CA · 16.9 kmM 2.1 · 3 km WNW of Dublin, CA · 17.2 kmM 1.2 · 4 km W of Dublin, CA · 16.6 kmM 2.1 · 3 km W of Dublin, CA · 17.0 kmM 1.6 · 3 km ESE of Hayward, CA · 16.2 kmM 1.1 · 1 km SW of Diablo, CA · 18.2 kmM 2.5 · 2 km ESE of Oakland, CA · 5.9 kmM 1.2 · 4 km WNW of San Francisco Zoo, CA · 34.5 kmM 2.0 · 8 km NE of Alum Rock, CA · 51.7 kmM 0.8 · 17 km E of Alum Rock, CA · 64.5 kmM 1.6 · 14 km N of Morgan Hill, CA · 71.3 kmM 1.3 · 3 km ENE of Saratoga, CA · 55.8 kmM 2.1 · 8 km ENE of Vallejo, CA · 41.8 kmM 1.6 · 6 km N of Alum Rock, CA · 47.1 kmM 1.9 · 1 km SW of Diablo, CA · 18.2 kmM 1.8 · 5 km SE of Fairview, CA · 17.1 kmM 1.3 · 15 km SW of Loyola, CA · 56.6 kmM 1.6 · 0 km S of Angwin, CA · 94.5 kmM 2.2 · 9 km ENE of Gilroy, CA · 100.0 kmM 1.0 · 1 km E of Pacheco, CA · 26.4 kmM 1.5 · 4 km S of Pittsburg, CA · 35.0 kmM 1.6 · 12 km NE of Napa, CA · 67.7 kmM 1.6 · 4 km ESE of Roseland, CA · 86.7 kmM 1.7 · 4 km SW of Brentwood, CA · 38.8 kmM 1.7 · 5 km NNW of Green Valley, CA · 60.4 kmM 1.7 · 15 km E of Seven Trees, CA · 66.6 kmM 1.1 · 7 km NW of American Canyon, CA · 54.0 kmM 1.7 · 9 km WSW of Patterson, CA · 87.7 kmM 3.3 · 3 km ESE of Larkfield-Wikiup, CA · 96.5 kmM 1.4 · 4 km SE of Calistoga, CA · 94.8 kmM 1.4 · 15 km N of Morgan Hill, CA · 71.2 kmM 1.3 · 3 km WNW of Orinda, CA · 15.6 kmM 1.6 · 4 km ESE of Hayward, CA · 17.0 kmM 1.5 · 5 km E of Fremont, CA · 31.5 kmM 1.2 · 1 km SSE of Blackhawk, CA · 22.5 kmM 1.8 · 8 km E of Vallejo, CA · 41.3 kmM 1.1 · 3 km ESE of Pacifica, CA · 31.8 kmM 1.6 · 2 km ESE of Pacifica, CA · 32.1 kmM 2.1 · 2 km SE of Pacifica, CA · 33.0 kmM 1.1 · 2 km SSE of Green Valley, CA · 53.7 kmM 2.3 · 3 km NNE of Graton, CA · 99.7 kmM 1.7 · 11 km ESE of Angwin, CA · 89.3 kmM 1.4 · 7 km ESE of Santa Rosa, CA · 85.8 kmM 1.8 · 7 km ESE of Santa Rosa, CA · 86.0 kmM 1.8 · 1 km SE of Pacifica, CA · 33.1 kmM 1.4 · 7 km E of Santa Venetia, CA · 36.8 kmM 1.9 · 7 km NNE of Benicia, CA · 39.6 kmM 1.0 · 2 km W of Hercules, CA · 32.3 kmM 1.4 · 4 km NNE of San Leandro, CA · 0.7 kmM 1.6 · 11 km SSE of Sunol, CA · 39.2 kmM 1.2 · 1 km NNE of Pacheco, CA · 26.9 kmM 2.3 · 1 km SE of Pacifica, CA · 33.4 kmM 2.0 · 2 km NW of Lafayette, CA · 15.6 kmM 1.4 · 2 km W of San Ramon, CA · 13.8 kmM 1.3 · 13 km SSE of Livermore, CA · 44.0 kmM 0.8 · 26 km NE of Morgan Hill, CA · 77.0 kmM 0.9 · 1 km ESE of Pinole, CA · 29.9 kmM 1.2 · 7 km NE of San Martin, CA · 87.7 kmM 1.8 · 7 km WSW of Gilroy, CA · 96.8 kmM 1.2 · 1 km S of Angwin, CA · 94.1 kmM 0.5 · 2 km ESE of Pacifica, CA · 31.8 kmM 1.6 · 1 km ESE of Pacifica, CA · 32.7 kmM 0.5 · 4 km SE of Pacifica, CA · 32.5 kmM 0.4 · 3 km NE of Pacifica, CA · 31.1 kmM 0.6 · 1 km SSE of Pacifica, CA · 33.5 kmM 1.7 · 5 km ENE of Vallejo, CA · 41.0 kmM 0.8 · 3 km N of Port Costa, CA · 35.9 kmM 1.3 · 4 km NNE of San Leandro, CA · 0.6 kmM 0.8 · 3 km SE of Pacifica, CA · 32.3 kmM 1.1 · 0 km SW of Sunol, CA · 28.4 kmM 2.3 · 5 km SSW of Alameda, CA · 10.1 kmM 1.1 · 2 km ESE of Pacifica, CA · 32.6 kmM 1.8 · 4 km ENE of Saint Helena, CA · 87.7 kmM 1.3 · 7 km WNW of San Francisco Zoo, CA · 37.4 kmM 1.3 · 4 km E of El Granada, CA · 36.7 kmM 0.6 · 2 km ESE of Pacifica, CA · 31.9 kmM 1.0 · 9 km NE of Alum Rock, CA · 49.4 kmM 1.4 · 7 km E of Santa Venetia, CA · 36.7 kmM 1.2 · 5 km NE of Kenwood, CA · 83.7 kmM 0.6 · 2 km ESE of Pacifica, CA · 32.7 kmM 1.2 · 5 km ENE of El Granada, CA · 35.1 kmM 1.5 · 2 km SW of Saratoga, CA · 57.0 kmM 1.4 · 2 km SE of Pacifica, CA · 32.8 kmM 0.9 · 3 km NE of San Leandro, CA · 1.6 kmM 1.7 · 2 km SSW of Clayton, CA · 25.8 kmM 0.0 · 6 km SSE of Portola Valley, CA · 47.1 kmM 0.4 · 1 km E of Walnut Creek, CA · 19.0 kmM 0.8 · 2 km ESE of Pacifica, CA · 32.1 km
M 3.8 · 3 km N of San Leandro, CA100 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.

Revisions1
Magnitude change+0.0M 3.8 → M 3.8
Depth change+0.0 km
Last update60735 min
2026-08-28 19:18:47 UTC2026-08-28 19:18:47 UTC

Explore related context

Putting this earthquake in context

An earthquake record can change after the first automatic publication as additional stations contribute data and analysts refine the solution.

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.

Read the methodology →

Blog

Latest from the blog

Guides, explainers and practical reading to go beyond the live data.

View all articles →