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Light earthquake 4.4 mag, 16 km SE of Esperanza, Puerto Rico



Earthquake location 17.975S, -65.378WA light earthquake with magnitude 4.4 (ml/mb) was reported 16 kilometers (10 miles) from Esperanza in Puerto Rico on Thursday. The earthquake occurred at a depth of 5 km (3 miles). A tsunami warning has been issued near Esperanza in Puerto Rico (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 02/10/15 / 2015-10-02 02:34:34 / October 2, 2015 @ 2:34 am. Id of earthquake: at00nvkn5m. Event ids that are associated: at00nvkn5m. Exact location of event, depth 5 km, -65.378° West, 17.975° North. The 4.4-magnitude earthquake has occurred at 22:34:34 / 10:34 pm (local time epicenter).

Event epicenter was 94 km (59 miles) from San Juan (c. 418 100 pop), 95 km (59 miles) from Bayamón (c. 203 500 pop), 76 km (47 miles) from Carolina (c. 170 400 pop), 76 km (48 miles) from Caguas (c. 86 800 pop), 88 km (55 miles) from Guaynabo (c. 81 400 pop), 79 km (49 miles) from Trujillo Alto (c. 54 200 pop). Country/countries that might be effected, Puerto Rico (c. 3 917 000 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Bayamón, Road Town, San Juan.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days seven, in the past 30 days sixteen and in the last 365 days ninety-two earthquakes of magnitude 3.0 or greater that was reported nearby.

Did you feel the quake?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage 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: 16 km SE of Esperanza, Puerto Rico.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude -65.378° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 17.975° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 5 km Depth of the event in kilometers.
Place 16km SE of Esperanza, 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 2015-10-02 02:34:34 Time when the event occurred. UTC/GMT
Updated 2015-10-02 02:37:52 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 2 The total number of felt reports
CDI 2.7 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 1 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 298 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network at The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,at, A comma-separated list of network contributors.
Number of Stations Used 31 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.2057142 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.17 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 129.6 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 at00nvkn5m Id of event.
Event Code 00nvkn5m An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00nvkn5m, A comma-separated list of event ids that are associated to an event.

1 Comment

  1. Joann

    Felt the tremor for s few seconds.

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