Sismo debile mag. 2.3 - 2km SE of Danville, CA, USA, lunedí, 22 febbraio 2021 -
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Sismo debile magnitudine 2.3 at 8 km depth
22 Feb 05:43 UTC: Primo a segnalare: USGS dopo 2 minuti.
Data & ora: 22 Feb 2021 05:41:06 UTC -
Ora locale a epicentro: Sunday, 21 Feb 2021 21:41 (GMT -8)
Magnitudine: 2.3
Profondità: 8.2 km
Epicentro latitudine / longitudine: 37.80617°N / 121.98317°W
(Contea di Kern, Stati Uniti)Vulcano più vicino: Clear Lake (146 km / 91 mi)
Nearby towns and cities:
2 km SE da Danville (pop: 44,400) --> Vedi sismi vicini
3 km N da San Ramon (pop: 76,100) --> Vedi sismi vicini
12 km NNO da Dublin (pop: 57,700) --> Vedi sismi vicini
13 km SSE da Walnut Creek (pop: 68,900) --> Vedi sismi vicini
15 km NE da Castro Valley (pop: 61,400) --> Vedi sismi vicini
18 km NNE da Hayward (pop: 158,300) --> Vedi sismi vicini
18 km ENE da San Leandro (pop: 90,700) --> Vedi sismi vicini
20 km SSE da Concord (pop: 128,700) --> Vedi sismi vicini
25 km E da Oakland (pop: 419,300) --> Vedi sismi vicini
39 km E da San Francisco (pop: 864,800) --> Vedi sismi vicini
Weather at epicenter at time of quake:
Clear Sky
9.3°C (49 F), humidity: 53%, wind: 2 m/s (3 kts) from ESE
Fonte dati primaria: USGS (United States Geological Survey)Clear Sky
9.3°C (49 F), humidity: 53%, wind: 2 m/s (3 kts) from ESEStima dell'energia sismica liberata: 1.8 x 108 joules (49.4 kilowatt hours) More info
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.
| Magnitudine | Profondità | Ubicazione | Fonte |
| 2.3 | 8.2 km | 2km SE of Danville, CA, USA | USGS |
| 2.3 | 8 km | SAN FRANCISCO BAY AREA, CALIF., USA | EMSC |
User reports for this quake (4)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
At magnitude 2.3, such a quake wouldn't normally be felt by people except under very favorable conditions.Contribute:
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Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
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Send your own user report!
23.7 km W of epicenter [Map] / Light shaking (MMI IV) / 2-5 s
14.9 km SW of epicenter [Map] / Very weak shaking (MMI II) / very short
Danville / Very weak shaking (MMI II) / single lateral shake / very short
Danville ca / Very weak shaking (MMI II) : Slight movement and small window rattle
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