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Minor earthquake, 2.8 mag strikes near Isabela in Puerto Rico

Earthquake location 19.1066S, -66.9743WA minor earthquake with magnitude 2.8 (ml/mb) was detected on Tuesday, 67 kilometers (42 miles) from Isabela in Puerto Rico. The earthquake occurred at a depth of 36 km (22 miles). Event id: pr2019274030. Ids that are associated to the earthquake: pr2019274030. Exact time and date of event in UTC/GMT: 01/10/19 / 2019-10-01 09:29:20 / October 1, 2019 @ 9:29 am. The temblor was detected at 05:29:20 / 5:29 am (local time epicenter). Exact location of earthquake, longitude -66.9743 West, latitude 19.1066 North, depth = 36 km.

Epicenter of the earthquake was 76 km (47 miles) from Arecibo (c. 49 300 pop), 68 km (42 miles) from Isabela (c. 12 500 pop), 71 km (44 miles) from Hatillo (c. 5 600 pop), 70 km (44 miles) from Quebradillas (c. 5 600 pop), 71 km (44 miles) from Camuy (c. 4 200 pop). Closest city/cities/towns to epicentrum/hypocenter was Arecibo, Hatillo, Camuy (min 5000 pop). Close country/countries, Puerto Rico (c. 3 917 000 pop) (That might be effected).

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

Questions or comments?

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: 67 km N of Isabela, Puerto Rico.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -66.9743° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.1066° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 36 km Depth of the event in kilometers.
Place 67km 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 2019-10-01 09:29:20 Time when the event occurred. UTC/GMT
Updated 2019-10-01 14:00:11 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 10 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.6536 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.47 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 240 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 pr2019274030 Id of event.
Event Code 2019274030 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,pr2019274030, A comma-separated list of event ids that are associated to an event.

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