Sismo leggero mag. 3.6 - Contea di San Bernardino County, 12 km a est da Ridgecrest, Contea di Kern County, Stati Uniti, giovedí, 08 aprile 2021 -
Sismo leggero magnitudine 3.6 at 8 km depth
8 Apr 20:53 UTC: Primo a segnalare: USGS dopo 3 minuti.
8 Apr 21:10: Profondità ricalcolata da 7.6 a 8.3 km (da 4.7 a 5.2 mi).
Update Thu, 8 Apr 2021, 20:57Small magnitude 3.6 earthquake 7 miles northeast of Ridgecrest, California, United States
3.6 quake 8 Apr 1:51 pm (GMT -7)
A very shallow magnitude 3.6 earthquake was reported around noon near Ridgecrest, Kern County, California, USA.
According to the United States Geological Survey, the quake hit on Thursday 8 April 2021 at 1:51 pm local time at a very shallow depth of 4.7 miles. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 3.6 as well.
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 Ridgecrest (pop. 28,800) located 7 miles from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Searles Valley (pop. 1,700) located 11 miles from the epicenter, China Lake Acres (pop. 1,900) 12 miles away, and Inyokern (pop. 1,100) 15 miles away.
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Data & ora: 8 Apr 2021 20:51:15 UTC -
Ora locale a epicentro:
Thursday, 8 Apr 2021 13:51 (GMT -7)
Profondità: 8.3 km
Epicentro latitudine / longitudine: 35.65383°N / 117.54967°W
(Contea di San Bernardino
, Contea di Kern
, Stati Uniti
Vulcano più vicino: Coso
(48 km / 30 mi)
Nearby towns and cities:12 km ENE da Ridgecrest
(pop: 28,800) --> Vedi sismi vicini18 km SO da Searles Valley
(pop: 1,740) --> Vedi sismi vicini24 km E da Magnolia
(pop: 1,100) --> Vedi sismi vicini71 km NNE da California City (Kern County)
(pop: 13,300) --> Vedi sismi vicini97 km NNO da Barstow
(pop: 23,700) --> Vedi sismi vicini98 km NNO da Barstow Heights (San Bernardino County)
(pop: 24,200) --> Vedi sismi vicini98 km NNO da Barstow Heights (San Bernardino County)
(pop: 24,200) --> Vedi sismi vicini119 km NNE da Lancaster
(pop: 161,100) --> Vedi sismi vicini137 km ENE da Bakersfield
(pop: 373,600) --> Vedi sismi vicini478 km SE da Sacramento
(pop: 490,700) --> Vedi sismi vicini
Weather at epicenter at time of quake:
Clear Sky 28°C
(82 F), humidity: 12%, wind: 4 m/s (7 kts) from E
Fonte dati primaria: USGS
(United States Geological Survey)
Stima dell'energia sismica liberata: 1.6 x 1010
joules (4.4 megawatt hours, equivalent to 3.79 tons of TNT) 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.
|3.6||8.3 km||12km ENE of Ridgecrest, CA, USA||USGS|
|3.3||10 km||SOUTHERN CALIFORNIA, USA||EMSC|
User reports for this quake (15)
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11.6 km WSW of epicenter [Map]
/ Light shaking (MMI IV) / single vertical bump / 2-5 s : Single boom with residual rattling. Felt very much like a test detonation at the base. My sleeping family did not notice it. | 3 users found this interesting. (reported through our app)
13.5 km W of epicenter [Map]
/ Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s : I heard what sounded like rolling thunder in the distance, a few seconds later I felt a side to side motion on my bed. Cats bolted out of the house. | One user found this interesting. (reported through our app)
Ridgecrest (10.4 km WSW of epicenter) [Map] / Weak shaking (MMI III) / vibration and rolling / 2-5 s : Sudden, weak, short-duration vertical shaking followed by weak, short-duration rolling | 2 users found this interesting.
Angeles national forest / Moderate shaking (MMI V) : Rock fall in the mountains. | One user found this interesting.
Ridgecrest / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : It was a normal quake | One user found this interesting.
RIDGECREST (11.5 km WSW of epicenter) [Map]
/ Weak shaking (MMI III) / 1-2 s (reported through our app)
Ridgecrest (11.4 km WSW of epicenter) [Map]
/ Light shaking (MMI IV) / single vertical bump / 1-2 s (reported through our app)
Ridgecrest california (13.4 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / very short
Ridgecrest (12.3 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
Angeles national forest / Moderate shaking (MMI V) : Rock fall in the mountains.
Hesperia / Weak shaking (MMI III) / single lateral shake / 5-10 s
ridgecrest, ca / Very weak shaking (MMI II) / rattling, vibrating / very short
Ridgecrest / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Ridgecrest, California / Light shaking (MMI IV) / rattling, vibrating / 1-2 s
Ridgecrest / Weak shaking (MMI III) / rattling, vibrating / very short
Earlier earthquakes in the same area since 1900
Map of earlier quakes