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Terremoto moderado mag. 4.6 - Yellow Sea, 286 km SW of Seoul, South Korea, sábado, 21 ago 2021 09:40 (GMT +9) -

Terremoto moderado mag. 4.6 - Yellow Sea, 286 km SW of Seoul, South Korea, sábado, 21 ago 2021 09:40 (GMT +9) Terremoto moderado mag. 4.6 - Yellow Sea, 286 km SW of Seoul, South Korea, sábado, 21 ago 2021 09:40 (GMT +9)

Terremoto moderado magnitud 4.6 a 10 km de profundidad

21 Aug 01:44 UTC: Primero en informar: USGS después de 1 hora y 3 minutos.

Detalles del terremoto

Fecha y hora21 Aug 2021 00:40:43 UTC -
Hora local en el epicentrosábado, 21 ago 2021 09:40 (GMT +9)
Prof.10.0 km
Epicentro latitud / longitud35.809°N / 124.6295°E (Yellow Sea, Corea del Sur)
Antipode35.809°S / 55.371°W
Intensidad del temblorTemblor moderado cerca del epicentro
Sentido1 informe
Fuente primaria de datosUSGS (United States Geological Survey)
Lugares cercanos173 km al NO de Sinan (pop: 53,200) | En el mapa | Sismos cercanos
189 km al O de Gunsan (pop: 243,400) | En el mapa | Sismos cercanos
191 km al ONO de Muan (pop: 75,700) | En el mapa | Sismos cercanos
195 km al NO de Mokpo (pop: 268,400) | En el mapa | Sismos cercanos
203 km al OSO de Hongseong (pop: 89,200) | En el mapa | Sismos cercanos
219 km al ONO de Gwangju (pop: 1,416,900) | En el mapa | Sismos cercanos
227 km al O de Jeonju (pop: 711,400) | En el mapa | Sismos cercanos
255 km al OSO de Daejeon (pop: 1,475,200) | En el mapa | Sismos cercanos
261 km al SO de Inchon (pop: 2,628,000) | En el mapa | Sismos cercanos
286 km al SO de Seúl (pop: 10,349,300) | En el mapa | Sismos cercanos
230 km al SO de Yeongheung Island (pop: 4,000) | En el mapa | Sismos cercanos
237 km al SO de Daebu Island (pop: 7,110) | En el mapa | Sismos cercanos
Energía sísmica estimada liberada5 x 1011 joules (139 MWh, equivalente a 120 toneladas de 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.
4.610 km173 Km NW of Sinan, South KoreaUSGS
4.610 kmSouth Korea: YELLOW SEAEMSC
4.610 kmSouth Korea: Yellow SeaGFZ


Seismic station: Inchon, Republic of Korea (INCN/IU network) | Distance from quake: 257 km / 160 mi | Show on map | Station Info
Seismic station Inchon, Republic of Korea: 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 (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
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Seoul / Very weak shaking (MMI II) / 1-2 s : I think I felt a smaller foreshock of the earthquake in the yellow sea nearby Gunsan city, when in the preceding night on 21st August between 1am and 2am I felt irritated because I felt my body slightly vibrating for a second and thought it does so becaus  

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