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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.5 mag, 3 km NW of Grębocice, Poland


Earthquake location 51.6174S, 16.1295WA light earthquake magnitude 4.5 (ml/mb) strikes 3 kilometers (2 miles) from Grębocice in Poland on Tuesday. The earthquake occurred at a depth of 5 km (3 miles) below the earth’s surface. Exact time and date of event in UTC/GMT: 21/10/25 / 2025-10-21 15:35:21 / October 21, 2025 @ 3:35 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.5-magnitude earthquake was detected at 15:35:21 / 3:35 pm (local time epicenter). Exact location of earthquake, 16.1295° East, 51.6174° North, depth 5 km. Unique identifier: us6000rihu. Ids that are associated to the event: us6000rihu.

Epicenter of the earthquake was 85 km (53 miles) from Wrocław (c. 634 900 pop), 95 km (59 miles) from Wałbrzych (c. 127 400 pop), 56 km (35 miles) from Zielona Góra (c. 118 400 pop), 45 km (28 miles) from Legnica (c. 106 000 pop), 85 km (53 miles) from Jelenia Góra (c. 87 300 pop), 25 km (15 miles) from Lubin (c. 77 500 pop), 6 km (4 miles) from Głogów (c. 68 500 pop). Nearest cities/city/villages to epicentrum/hypocenter was Luboń, Boguszów-Gorce, Kórnik (min 5000 pop). Nearby country/countries that might be effected, Poland (c. 38 500 000 pop).

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 two, in the past 30 days two and in the last 365 days ten earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 13,000 light quakes in the world.

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 3 km NW of Grębocice, Poland.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 16.1295° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.6174° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 5 km Depth of the event in kilometers.
Place 3 km NW of Grębocice, Poland Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-10-21 15:35:21 Time when the event occurred. UTC/GMT
Updated 2025-10-21 16:09:34 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 312 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 122 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.98 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.83 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 36 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 us6000rihu Id of event.
Event Code 6000rihu An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rihu, A comma-separated list of event ids that are associated to an event.

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