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Light earthquake, 4.2 mag was detected near Nafpaktos in Greece


Earthquake location 38.4817S, 21.9155WA light earthquake magnitude 4.2 (ml/mb) has occurred on Thursday, 12 kilometers (7 miles) from Nafpaktos in Greece. The earthquake occurred at a depth of 10 km (6 miles). The 4.2-magnitude earthquake was detected at 09:15:47 / 9:15 am (local time epicenter). Unique identifier: us20009yct. Ids that are associated to the event: us20009yct. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 20/07/17 / 2017-07-20 07:15:47 / July 20, 2017 @ 7:15 am. Exact location of event, longitude 21.9155 East, latitude 38.4817 North, depth = 10 km.

Earthquake epicenter was 31 km (19 miles) from Pátra (c. 163 400 pop), 65 km (40 miles) from Lamía (c. 52 000 pop), 47 km (29 miles) from Agrínio (c. 46 900 pop), 84 km (52 miles) from Livadeiá (c. 21 500 pop), 30 km (18 miles) from Aígio (c. 20 700 pop), 91 km (56 miles) from Amaliáda (c. 19 600 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Orchomenós, Gastoúni, Amaliáda. Close country/countries, Greece (c. 11 000 000 pop) (That might be effected).

Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days three and in the last 365 days twenty earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel it?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 12 km NE of Nafpaktos, Greece. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 21.9155° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 38.4817° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 12km NE of Nafpaktos, Greece Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-07-20 07:15:47 Time when the event occurred. UTC/GMT
Updated 2017-07-20 07:38:48 Time when the event was most recently updated. UTC/GMT
Timezone offset 120 Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 3.4 The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 272 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.631 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.03 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 95 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mwr The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us20009yct Id of event.
Event Code 20009yct An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20009yct, A comma-separated list of event ids that are associated to an event.

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