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Light earthquake: M4.1 quake has struck near Fuig in Puerto Rico


Earthquake location 17.9725S, -66.9513WA light earthquake magnitude 4.1 (ml/mb) has occurred on Sunday, 4 kilometers (2 miles) from Fuig in Puerto Rico. Event id: us7000adwd. Ids that are associated to the earthquake: us7000adwd. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 21:43:58 / 9:43 pm (local time epicenter). The earthquake was roughly at a depth of 10 km (6 miles). Date and time of earthquake in UTC/GMT: 28/06/20 / 2020-06-28 21:43:58 / June 28, 2020 @ 9:43 pm. Exact location of earthquake, longitude -66.9513 West, latitude 17.9725 North, depth = 10 km.

Nearest cities/city/villages to epicentrum/hypocenter was Campanilla, Dorado, Toa Baja (min 5000 pop). Close country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Epicenter of the earthquake was 36 km (22 miles) from Ponce (c. 152 600 pop), 32 km (20 miles) from Mayagüez (c. 78 600 pop), 61 km (38 miles) from Arecibo (c. 49 300 pop), 79 km (49 miles) from Vega Baja (c. 29 300 pop), 69 km (43 miles) from Barceloneta (c. 22 300 pop), 89 km (55 miles) from Guayama (c. 21 600 pop).

In the past 24 hours, there have been thirty, in the last 10 days seventy, in the past 30 days one hundred and sixty-nine and in the last 365 days two thousand, three hundred and four earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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.

How would you describe the shaking?

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. 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: 4 km WSW of Fuig, Puerto Rico.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -66.9513° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.9725° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 4 km WSW of Fuig, Puerto Rico Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-06-28 21:43:58 Time when the event occurred. UTC/GMT
Updated 2020-06-28 21:55:36 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 2 The total number of felt reports
CDI 5 The maximum reported intensity for the event.
MMI 3.576 The maximum estimated instrumental intensity for the event.
Alert Level green 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 260 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 0.088 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.58 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 179 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us7000adwd Id of event.
Event Code 7000adwd An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000adwd, A comma-separated list of event ids that are associated to an event.

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