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Terremoto moderato mag. 4.2 - 43 km a nord da Santa Rosa, Contea di Sonoma County, Contea di Kern, Stati Uniti, martedì, 28 giu 2022 04:57 (GMT -7) -

Terremoto moderato mag. 4.2 - 43 km a nord da Santa Rosa, Contea di Sonoma County, Contea di Kern, Stati Uniti, martedì, 28 giu 2022 04:57 (GMT -7) Terremoto moderato mag. 4.2 - 43 km a nord da Santa Rosa, Contea di Sonoma County, Contea di Kern, Stati Uniti, martedì, 28 giu 2022 04:57 (GMT -7)

Terremoto moderato magnitudine 4.2 a 0.5 km di profondità

28 Jun 12:01 UTC: Primo a segnalare: USGS dopo 4 minuti.
28 Jun 12:03: Magnitudine ricalcolata da 3.8 a 4.2.
28 Jun 16:32: Profondità ricalcolata da 0.3 a 0.5 km (da 0.2 a 0.3 mi).
Update Tue, 28 Jun 2022, 12:09

Moderate magnitude 4.2 earthquake 27 miles north of Santa Rosa, California, United States

4.2 quake 28 Jun 4:57 am (GMT -7)
4.2 quake 28 Jun 4:57 am (GMT -7)
Just 11 minutes ago, a 4.2-magnitude earthquake struck near Santa Rosa, Sonoma County, California, USA. The tremor was recorded early morning on Tuesday, June 28th, 2022, at 4:57 am local time, at a very shallow depth of 0.2 miles below the surface.
The event was filed by the United States Geological Survey, the first seismological agency to report it.
A second report was later issued by the citizen-seismograph network of RaspberryShake, which listed it as a magnitude 4.2 earthquake as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 4.2.
Based on the preliminary seismic data, the quake should have been widely felt by almost everyone in the area of the epicenter. It might have caused light to moderate damage.
Moderate shaking probably occurred in Cobb (pop. 1,800) located 2 miles from the epicenter.
Weak shaking might have been felt in Clearlake (pop. 15,200) located 11 miles from the epicenter, Russian River (pop. 11,700) 17 miles away, Russian River (pop. 11,700) 17 miles away, Windsor (pop. 27,500) 20 miles away, and Santa Rosa (pop. 175,000) 27 miles away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ukiah (pop. 15,900) located 33 miles from the epicenter, Rohnert Park (pop. 42,400) 34 miles away, and Petaluma (pop. 60,400) 42 miles away.

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Dettagli del sismo

Data e ora28 Jun 2022 11:57:40 UTC -
Ora locale all'epicentromartedì, 28 giu 2022 04:57 (GMT -7)
StatusConfermato
Magnitudine4.2
Prof.0.5 km
Epicentro latitudine / longitudine38.83017°N / 122.74717°W (Contea di Lake, Contea di Kern, Stati Uniti)
Antipode38.83°S / 57.253°E
Intensità di scuotimentoScuotimento leggero
Sentito8 rapporti
Fonte dati primariaUSGS (United States Geological Survey)
Vulcano più vicinoClear Lake (16 km / 10 mi)
Luoghi vicini2 km ONO da Cobb (pop: 1,780) | Mappa | Sismi nelle vicinanze
17 km O da Hidden Valley Lake (pop: 5,580) | Mappa | Sismi nelle vicinanze
18 km SO da Clearlake (Lake County) (pop: 15,200) | Mappa | Sismi nelle vicinanze
27 km NNE da Russian River (Sonoma County) (pop: 11,700) | Mappa | Sismi nelle vicinanze
27 km NNE da Russian River (pop: 11,700) | Mappa | Sismi nelle vicinanze
32 km N da Windsor (Sonoma County) (pop: 27,500) | Mappa | Sismi nelle vicinanze
43 km N da Santa Rosa (pop: 175,000) | Mappa | Sismi nelle vicinanze
112 km ONO da Sacramento (pop: 490,700) | Mappa | Sismi nelle vicinanze
Meteo all'epicentro al momento del sismoClear Sky 11.4°C (53 F), humidity: 31%, wind: 3 m/s (5 kts) from NW
Energia sismica rilasciata stimata1.3 x 1011 joules (35 MWh, equivalent to 30.1 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.Prof.UbicazioneFonte
4.20.5 km2km WNW of Cobb, CAUSGS
3.810 kmNORTHERN CALIFORNIAEMSC
4.20.5 kmNorthern CaliforniaRaspberryShake

Seismograms

Seismic station: Columbia College, Columbia, CA, USA (CMB/BK network) | Distance from quake: 224 km / 139 mi | Show on map | Station Info
Seismic station Columbia College, Columbia, CA, USA: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (11)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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West Sacramento, CA / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s : Light, continuous shaking. I felt multiple smaller quakes a few times during the night. There was a big one felt at 1:55pm yesterday… | 9 users found this interesting.  
Loch Lomond, Ca (6.4 km NE of epicenter) [Map] / Light shaking (MMI IV) / complex motion difficult to describe / 1-2 s : Strong jolt like my 6’ male partner sitting very hard with his whole weight on the bed while I was sleeping. Woke me up. | 3 users found this interesting.  
Mountain home ranch rd. / Very weak shaking (MMI II) / single vertical bump / very short : Very short, quick, light shaking. | 2 users found this interesting. (reported through our app)  
Kelseyville / Light shaking (MMI IV) / horizontal (sideways) swinging / 20-30 s : It was decent small light shake and the house rumbled a bit causing bags to fall over. | One user found this interesting.  
Roseville, Placer, California (126.7 km E of epicenter) [Map] / not felt (reported through our app)
Silver Peak NV / not felt (reported through our app)
Little River CA / Light shaking (MMI IV) / single lateral shake / very short : felt house move sise-to-side (a tiny house on a trailer frame)  
San leandro / not felt (reported through our app)
Vacaville, CA / Very weak shaking (MMI II) / 1-2 s
cobb, CA / Moderate shaking (MMI V)
Geyserville, CA / Weak shaking (MMI III) / vibration and rolling / 1-2 s

Earlier earthquakes in the same area

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