Quake Info: Light Mag. 3.0 Earthquake - 1.8 mi North of San Leandro, Alameda County, California, USA, on Saturday, Apr 1, 2023 at 9:43 am (GMT -7)

Light magnitude 3.0 earthquake at 8 km depth

1 Apr 16:47 UTC: First to report: USGS after 3 minutes.
1 Apr 19:40: Magnitude recalculated from 3.2 to 3.0. Hypocenter depth recalculated from 6.9 to 7.6 km (from 4.3 to 4.7 mi).

Update Sat, 1 Apr 2023, 16:54

Small magnitude 3.2 quake hits 2 miles northeast of San Leandro, California, United States in the morning

3.2 quake 1 Apr 9:43 am (GMT -7)

The United States Geological Survey reported a magnitude 3.2 quake in the United States near San Leandro, Alameda County, California, only 10 minutes ago. The earthquake hit in the morning on Saturday, April 1st, 2023, at 9:43 am local time at a very shallow depth of 4.3 miles. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in San Leandro (pop. 90,700) located 2 miles from the epicenter, Ashland (pop. 21,900) 4 miles away, and Castro Valley (pop. 61,400) 5 miles away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Alameda (pop. 78,600) located 6 miles from the epicenter, Hayward (pop. 158,300) 7 miles away, Oakland (pop. 419,300) 8 miles away, San Ramon (pop. 76,100) 9 miles away, Berkeley (pop. 121,000) 11 miles away, and San Francisco (pop. 864,800) 15 miles away.

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Earthquake details

Date & time	Apr 1, 2023 16:43:48 UTC -
Local time at epicenter	Saturday, Apr 1, 2023 at 9:43 am (GMT -7)
Status	Confirmed
Magnitude	3
Depth	7.6 km
Epicenter latitude / longitude	37.74917°N / 122.14333°W (Alameda, California, United States)
Antipode	37.749°S / 57.857°E
Shaking intensity	Weak shaking
Felt	21 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Clear Lake (146 km / 91 mi)
Nearby towns and cities	3 km (2 mi) NNE of San Leandro (pop: 90,700) \| Show on map \| Quakes nearby 8 km (5 mi) NW of Castro Valley (pop: 61,400) \| Show on map \| Quakes nearby 10 km (7 mi) NNW of Hayward (pop: 158,300) \| Show on map \| Quakes nearby 11 km (7 mi) ESE of Alameda (pop: 78,600) \| Show on map \| Quakes nearby 13 km (8 mi) ESE of Oakland (pop: 419,300) \| Show on map \| Quakes nearby 18 km (11 mi) SE of Berkeley (pop: 121,000) \| Show on map \| Quakes nearby 24 km (15 mi) E of San Francisco (pop: 864,800) \| Show on map \| Quakes nearby 109 km (67 mi) SSW of Sacramento (pop: 490,700) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Few Clouds 10.9°C (52 F), humidity: 76%, wind: 3 m/s (6 kts) from SE
Estimated seismic energy released	2 x 10⁹ joules (554 kilowatt hours, equivalent to 0.477 tons of TNT) \| about seismic energy

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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.

Mag.	Depth	Location	Source
3.0	7.6 km	3km NNE of San Leandro, CA	USGS

Most recent quakes Top 20 past 24 hrs Quakes in the US California

User reports for this quake (21)

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In Helen Drive, Millbrae, CA 94030 (28.1 km SW of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / very short : A minor shake for only a second or less when I was in my bed. I check my cell phone time and it was 9:44 am.

So. San Francisco (13.9 km W of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / 1-2 s : Sitting up on bed and felt a very quick jolt

Oakland (12.6 km NW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s

East Bay Area (2.4 km ESE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s

Emeryville, CA (17 km NW of epicenter) [Map] / Weak shaking (MMI III)

East Bay Area (2.4 km ESE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s

Danville California (16.4 km ENE of epicenter) [Map] / Weak shaking (MMI III)

San Leandro, ca (1.4 km SSW of epicenter) [Map] / Very weak shaking (MMI II) : Quick shake that went fast through the house

Union City, Alameda, California (18.1 km SSE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s

San Leandro, CA (6.8 km S of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / very short : My bed shack

94602 (8.6 km NW of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / very short

4417 walnut st oakland ca (6.3 km NW of epicenter) [Map] / Light shaking (MMI IV) / very short : I was sitting on the couch when I felt the shake

san bruno (30 km WSW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : in bed

Daly Coty (27 km W of epicenter) [Map] / Weak shaking (MMI III)

San Leandro, Alameda, California (4.2 km S of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : Used to shakes in bay area

Daly City California 94015 / Very weak shaking (MMI II) / single vertical bump / 1-2 s

Alameda / Very weak shaking (MMI II) / vibration and rolling / 2-5 s (reported through our app)

94612 / Weak shaking (MMI III) / 1-2 s : Quick shake

San Leandro / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s

94601 / Weak shaking (MMI III) / single lateral shake / 1-2 s : Weak shaking, nothing damage

San Bruno, CA / Moderate shaking (MMI V) / rattling, vibrating / 2-5 s

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Most recent quakes Top 20 past 24 hrs Quakes in the US California

Light mag. 3.0 earthquake - 1.8 mi north of San Leandro, Alameda County, California, USA, on Saturday, Apr 1, 2023 at 9:43 am (GMT -7) -

Light magnitude 3.0 earthquake at 8 km depth

Small magnitude 3.2 quake hits 2 miles northeast of San Leandro, California, United States in the morning

Earthquake details

Data for the same earthquake reported by different agencies

User reports for this quake (21)

Earlier earthquakes in the same area

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Light mag. 3.0 earthquake - 1.8 mi north of San Leandro, Alameda County, California, USA, on Saturday, Apr 1, 2023 at 9:43 am (GMT -7) - writeAge(1680367428)

Light magnitude 3.0 earthquake at 8 km depth

Small magnitude 3.2 quake hits 2 miles northeast of San Leandro, California, United States in the morning

Earthquake details

Data for the same earthquake reported by different agencies

User reports for this quake (21)

Earlier earthquakes in the same area

Support us - Help us upgrade our services!

Light mag. 3.0 earthquake - 1.8 mi north of San Leandro, Alameda County, California, USA, on Saturday, Apr 1, 2023 at 9:43 am (GMT -7) -