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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag was detected near Katastárion in Greece

Earthquake location 37.8161S, 20.7279WA light earthquake magnitude 4 (ml/mb) strikes 3 kilometers (2 miles) from Katastárion in Greece on Sunday. Global date and time of event UTC/GMT: 28/02/21 / 2021-02-28 16:21:16 / February 28, 2021 @ 4:21 pm. All ids that are associated to the event: us7000dfjn. Unique identifier: us7000dfjn. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 10 km, 20.7279° East, 37.8161° North. The earthquake was roughly at a depth of 10 km (6 miles). The temblor was reported at 16:21:16 / 4:21 pm (local time epicenter).

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Zacháro, Mesolóngi, . Epicenter of the event was 65 km (40 miles) from Pýrgos (c. 22 400 pop), 55 km (34 miles) from Amaliáda (c. 19 600 pop), 87 km (54 miles) from Mesolóngi (c. 12 700 pop), 15 km (9 miles) from Zákynthos (c. 11 500 pop), 46 km (28 miles) from Argostólion (c. 9 800 pop), 46 km (29 miles) from Gastoúni (c. 8 100 pop). Country/countries that might be effected, Greece (c. 11 000 000 pop).

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

Did you feel the quake?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 3 km WSW of Katastárion, Greece.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 20.7279° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.8161° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 3 km WSW of Katastárion, Greece Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-02-28 16:21:16 Time when the event occurred. UTC/GMT
Updated 2021-03-07 20:50:16 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI 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 246 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 1.145 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.9 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 142 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us7000dfjn Id of event.
Event Code 7000dfjn An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000dfjn, A comma-separated list of event ids that are associated to an event.

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