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Minor earthquake: M2.8 quake has struck near Loiza in Puerto Rico



Earthquake location 18.9083S, -65.7925WA minor earthquake with magnitude 2.8 (ml/mb) was reported 53 kilometers (33 miles) from Loiza in Puerto Rico on Saturday. The earthquake occurred at a depth of 27 km (17 miles) below the earth’s surface. Id of earthquake: pr17028005. Event ids that are associated: pr17028005. Exact time and date of event in UTC/GMT: 28/01/17 / 2017-01-28 17:06:49 / January 28, 2017 @ 5:06 pm. Exact location of event, depth 27 km, -65.7925° West, 18.9083° North. The temblor was picked up at 13:06:49 / 1:06 pm (local time epicenter).

The epicenter was 59 km (37 miles) from San Juan (c. 418 100 pop), 68 km (42 miles) from Bayamón (c. 203 500 pop), 61 km (38 miles) from Carolina (c. 170 400 pop), 70 km (43 miles) from Guaynabo (c. 81 400 pop), 66 km (41 miles) from Trujillo Alto (c. 54 200 pop). Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Juncos, Toa Alta, Gurabo.

Each year there are an estimated 1,300,000 minor quakes in the world. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days seventeen, in the past 30 days thirty-seven and in the last 365 days two hundred and eighty-seven earthquakes of magnitude 3.0 or greater that has occurred nearby.

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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 53 km N of Loiza, Puerto Rico.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -65.7925° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.9083° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 27 km Depth of the event in kilometers.
Place 53km N of Loiza, 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 2017-01-28 17:06:49 Time when the event occurred. UTC/GMT
Updated 2017-01-28 20:31:58 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 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 121 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network pr The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,pr, A comma-separated list of network contributors.
Number of Stations Used 3 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.63600722 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.1 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 291.6 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type Md The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID pr17028005 Id of event.
Event Code 17028005 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr17028005, A comma-separated list of event ids that are associated to an event.

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