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Minor mag. 3.2 earthquake - 3km ESE of San Leandro, CA (USA) on Sunday, 6 September 2020

Minor mag. 3.2 earthquake  - 3km ESE of San Leandro, CA (USA) on Sunday, 6 September 2020
6 Sep 18:47 UTC: First to report: USGS after 4 minutes.
Sep 6 19:26: Magnitude recalculated from 3.4 to 3.2.
Hypocenter depth recalculated from 10.1 to 8.9 km.
Update Mon, 7 Sep 2020, 11:08
Small earthquakes near downtown San Francisco widely felt
Location of yesterday's magnitude 3.2 quake near San Francisco
Location of yesterday's magnitude 3.2 quake near San Francisco
Two small earthquakes of magnitudes 2.6 and 3.4 occurred near downtown San Francisco yesterday noon, at 11:36 and 11:43 local time, respectively.
Their epicenters were close to San Leandro, about 20 km from the city center.
Although the quakes were very small and pose no danger, many people felt and reported them. In most cases, only a light and quick shake was felt that lasted less than 2 seconds.
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Earthquake data:

Date & time: Sunday, 6 September 2020 18:43 UTC
Local time at epicenter: 6 Sep 2020 11:36 am
Magnitude: 3.2
Depth: 8.9 km
Epicenter latitude / longitude: 37.7155°N / 122.12717°W (United States)
Nearest volcano: Clear Lake (150 km / 93 mi)
Nearby towns and cities:
3 km (2 mi) SE of San Leandro (pop: 90,700)
4 km (2 mi) N of San Lorenzo (pop: 23,500)
4 km (3 mi) NW of Castro Valley (pop: 61,400)
27 km (16 mi) SE of San Francisco (pop: 864,800)
47 km (29 mi) NW of San Jose (pop: 1,026,900)
111 km (69 mi) SW of Sacramento (pop: 490,700)
Primary data source: USGS
Estimated released energy: 4 x 109 joules (1.11 megawatt hours, equivalent to 0.951 tons of TNT) [learn more]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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.
TimeMag. / DepthLocationSource
6 Sep 2020 11:36 am (6 Sep 18:43:57 UTC)M 3.2 / 8.9 km3km ESE of San Leandro, CA (USA)USGS

User reports for this quake (93)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
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Send your own user report!
Upper Dimond District, Oakland, CA (11.3 km NW of epicenter) [Map] / Weak shaking (MMI III) / simple rolling (tilting sideways along one direction) / 2-5 s : Simple rolling with a duration of approx 3 sec. | 2 users found this interesting.
San Leandro, at home (2.5 km W of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / very short : It was like a quick shake that last 1-2 seconds - just enough for you to feel it and noticed | 2 users found this interesting.
Danville, Ca (17.3 km NE of epicenter) [Map] / not felt / single lateral shake / very short : Just a quick little jolt. | 2 users found this interesting.
Alameda, CA (10.5 km WNW of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 1-2 s : I felt a jolt, then a short pause, then a few longer, firmer jolts, then it ended. | 2 users found this interesting.
34.7 km NW of epicenter [Map] / not felt : Did not notice anything at 2377 Garden Tract Rd in Richmond. | One user found this interesting.
17.4 km ENE of epicenter [Map] / Light shaking (MMI IV) : It was quick jolt | One user found this interesting. (reported through our app)
Hayward Ca (5.7 km SSE of epicenter) [Map] / Very weak shaking (MMI II) : I felt one a hour ago and second one 12:51pm | One user found this interesting.
Move my house (0.5 km WSW of epicenter) [Map] / Moderate shaking (MMI V) / 1-2 s : Shake strong | One user found this interesting. (reported through our app)
18.1 km NW of epicenter [Map] / Very weak shaking (MMI II) / rattling, vibrating / very short
14.1 km SSE of epicenter [Map] / Light shaking (MMI IV) / single lateral shake / 1-2 s
11.1 km WNW of epicenter [Map] / Weak shaking (MMI III) (reported through our app)
23.1 km ENE of epicenter [Map] / Very weak shaking (MMI II) / single lateral shake / very short
Fremont (37.2 km SSE of epicenter) [Map] / Moderate shaking (MMI V) / very short (reported through our app)
21.9 km NW of epicenter [Map] / Weak shaking (MMI III)
23.1 km NNE of epicenter [Map] / Light shaking (MMI IV) / 1-2 s
HAYWARD (8 km ESE of epicenter) [Map] / Very weak shaking (MMI II)
18.4 km NNW of epicenter [Map] / Weak shaking (MMI III)
13.3 km ESE of epicenter [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
8.9 km NW of epicenter [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 s
25.1 km SW of epicenter [Map] / Light shaking (MMI IV) / 2-5 s
San Francisco (27 km W of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Walnut Creek (20.4 km NNE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s
5.7 km S of epicenter [Map] / Moderate shaking (MMI V) / 1-2 s
San Mateo, CA (24.9 km SW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
20.2 km NW of epicenter [Map] / Moderate shaking (MMI V) / 1-2 s
32.2 km NNW of epicenter [Map] / Very weak shaking (MMI II) (reported through our app)
Hayward Burbank neighborhood / Light shaking (MMI IV) : A sharp jolt upward (I was standing and grabbed the sink I was next to, on the second floor) and a loud noise as if the building had bounced. | 4 users found this interesting.
Moraga, CA / Light shaking (MMI IV) / 1-2 s : At first I thought the sound was a low-flying jet passing overhead, which would have been odd because I'm not near an airport. Then I saw the medicine cabinet mirror moving. It only lasted a couple seconds. | 3 users found this interesting.
Foster City / Weak shaking (MMI III) / very short : Both husband and I were sitting on the same couch but at opposite ends. I felt it but he didn’t. I was sitting closer to Street so thought it was a big truck. Felt like a strong jolt. Son upstairs sleeping felt it. | 3 users found this interesting.
San Ramon / Very weak shaking (MMI II) / 2-5 s : I was talking to mom in San Leandro when she felt it in San Leandro. In 5-7 seconds later I felt it in San Ramon for about 2-5 saddle shaking. | 3 users found this interesting.
San Leandro / Light shaking (MMI IV) / single lateral shake / 1-2 s : It is very short and just like the second you have a rush stop of your car and the second it stops and freeze | One user found this interesting.
Newark, CA / Very weak shaking (MMI II) / very short : It felt like something hit the house twice. It was more intense the first time and they were a few seconds apart. | One user found this interesting.
San Lorenzo ca 94580 / Light shaking (MMI IV) / single lateral shake / very short : Felt a preshock of about .10 seconds a few minutes prior. Then felt a sideways motion for about 0.5 seconds. | One user found this interesting.
Dublin / Very weak shaking (MMI II) / rattling, vibrating : Slight shaking for less than 2 seconds. Very light vibrations felt. Did not feel the 2.6 quake minutes before but was definitely aware that this one(3.4)was an earthquake:
Alameda / Very weak shaking (MMI II) / single vertical bump / 1-2 s : There was a loud solid noise and then the shower tremmers | 2 users found this interesting.
San Ramon / Very weak shaking (MMI II) / 1-2 s : Sitting on bed. Felt like the dog was under the the bed trying to get out from under the bed | One user found this interesting.
Hayward / Weak shaking (MMI III) / single lateral shake / very short : Short, but definitely felt a jolt. | One user found this interesting.
Marina Bay Richmond / Moderate shaking (MMI V) : Woke me from a sound sleep. Sharp and loud. | One user found this interesting.
San Leandro, ca 94579 / Light shaking (MMI IV) / 2-5 s : Felt like a big truck was driving in the street | One user found this interesting.
San Lorenzo, Ca / Light shaking (MMI IV) : Felt a good rumble and shake | One user found this interesting.
Oakland / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Just a quick weak shake and jolt. | One user found this interesting.
Zip code 94080 / Very weak shaking (MMI II) : I live in South San Francisco, CA. Across the San Francisco Bay | One user found this interesting.
Hayward / Light shaking (MMI IV) / 2-5 s : Building swayed | One user found this interesting.
Daly City / Weak shaking (MMI III) : Igeard cracking and boom, short. And minor shake | One user found this interesting.
Daly City / Weak shaking (MMI III) : Igeard cracking and boom, short. And minor shake
Pacifia / Very weak shaking (MMI II) / single lateral shake / very short
San Mateo / Weak shaking (MMI III)
Walnut Creek / Light shaking (MMI IV) / single vertical bump / very short
San Mateo / Weak shaking (MMI III)
Daly City / Very weak shaking (MMI II) / 1-2 s
Walnut Creek / Weak shaking (MMI III)
Pacifia / Very weak shaking (MMI II) / single lateral shake / very short
San Leandro / Light shaking (MMI IV)
Moraga / Weak shaking (MMI III) / single lateral shake / 1-2 s
San leandro / Light shaking (MMI IV) / simple rolling (tilting sideways along one direction) / 1-2 s
94478 / Very weak shaking (MMI II)
Oakland / Weak shaking (MMI III) / single lateral shake / very short
Oakland, CA / Light shaking (MMI IV)
San Leandro / Light shaking (MMI IV)
Cherryland Ca / Moderate shaking (MMI V) / rattling, vibrating / very short
San ramon / Light shaking (MMI IV) / single vertical bump / very short
Moraga, CA / Very weak shaking (MMI II) / single lateral shake / very short
94582 / Very weak shaking (MMI II) / horizontal (sideways) swinging / 5-10 s
Alameda,CA / Moderate shaking (MMI V) / 1-2 s
Alameda, CA / Weak shaking (MMI III) / 1-2 s
94611 / Very weak shaking (MMI II) / single vertical bump
Oakland, CA 94612, USA / Moderate shaking (MMI V) / single lateral shake / 2-5 s
CASTRO VALLEY / Very weak shaking (MMI II) / single lateral shake / very short
Hayward, 2nd floor bedroom / Light shaking (MMI IV) / rattling, vibrating
Martinez / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s
Hayward / Moderate shaking (MMI V) / 1-2 s
Albany, Ca / Very weak shaking (MMI II) / simple rolling (tilting sideways along one direction)
94080 / Very weak shaking (MMI II) / horizontal (sideways) swinging / 1-2 s
Pleasant Hill / Weak shaking (MMI III)
Oakland / Very weak shaking (MMI II) / very short
San leandro / Moderate shaking (MMI V) / horizontal (sideways) swinging / 2-5 s
890 Maud Ave San Leandro. CA / Weak shaking (MMI III) / simple rolling (tilting sideways along one direction) / 1-2 s
Downtown San Leandro / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Burlingame, CA / not felt
Walnut Creek / Light shaking (MMI IV) / single vertical bump / very short
San Mateo / Weak shaking (MMI III)
San Leandro / Light shaking (MMI IV)
Oakland / Very weak shaking (MMI II) / single lateral shake / 2-5 s
Oakland / Light shaking (MMI IV) / single vertical bump / 1-2 s
DSF4, San Leandro, CA / Very weak shaking (MMI II)
Oakland ca / Light shaking (MMI IV) / 2-5 s
fremont, ca / Weak shaking (MMI III)
Berkeley / Very weak shaking (MMI II) / rattling, vibrating / very short
Walnut Creek / not felt
Hayward ca / Light shaking (MMI IV) / single vertical bump / 1-2 s
94541 / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Alameda / Very weak shaking (MMI II) / 1-2 s
Castro Valley / Light shaking (MMI IV) / single lateral shake / 2-5 s

Earlier earthquakes in the same area since 1900

Minor mag. 3.2 earthquake - 3km ESE of San Leandro, CA (USA) on Sunday, 6 September 2020

Map of earlier quakes

 

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