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Minor earthquake 2.8 mag, 48 km N of Isabela, Puerto Rico


Earthquake location 18.934S, -66.9469WA minor earthquake magnitude 2.8 (ml/mb) strikes 48 kilometers (30 miles) from Isabela in Puerto Rico on Wednesday. Exact location, longitude -66.9469° West, latitude 18.934° North, depth = 9 km. Id of earthquake: pr17088000. Event ids that are associated: pr17088000. The earthquake occurred at a depth of 9 km (6 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 29/03/17 / 2017-03-29 04:05:38 / March 29, 2017 @ 4:05 am. The temblor was reported at 00:05:38 / 12:05 am (local time epicenter).

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Las Marías, Florida, Añasco. Earthquake epicenter was 57 km (35 miles) from Arecibo (c. 49 300 pop), 69 km (43 miles) from Barceloneta (c. 22 300 pop), 74 km (46 miles) from Manatí (c. 16 100 pop), 60 km (38 miles) from Aguadilla (c. 16 100 pop), 49 km (30 miles) from Isabela (c. 12 500 pop). Nearby country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected).

In the past 24 hours, there have been 0, in the last 10 days three, in the past 30 days twenty-two and in the last 365 days two hundred and fifteen earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. Every year there are an estimated 1,300,000 minor earthquakes in the world.

Questions or comments?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 48 km N of Isabela, Puerto Rico. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -66.9469° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.934° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 9 km Depth of the event in kilometers.
Place 48km N of Isabela, 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 2017-03-29 04:05:38 Time when the event occurred. UTC/GMT
Updated 2017-03-29 08:04:50 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 4 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.48958183 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.31 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 316.8 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 pr17088000 Id of event.
Event Code 17088000 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr17088000, A comma-separated list of event ids that are associated to an event.

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