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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4 mag, 4 km NW of San Rafael del Sur, Nicaragua


Earthquake location 11.8826S, -86.4674WA light earthquake with magnitude 4 (ml/mb) was detected on Tuesday, 4 kilometers (2 miles) from San Rafael del Sur in Nicaragua. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 104.41 km, -86.4674° West, 11.8826° North. Id of earthquake: us1000hxf7. Event ids that are associated: us1000hxf7. Date and time of earthquake in UTC/GMT: 21/11/18 / 2018-11-21 01:09:38 / November 21, 2018 @ 1:09 am. The temblor was reported at 19:09:38 / 7:09 pm (local time epicenter). The earthquake occurred at a depth of 104.41 km (65 miles).

Epicenter of the event was 36 km (23 miles) from Managua (c. 973 100 pop), 76 km (47 miles) from León (c. 144 500 pop), 42 km (26 miles) from Masaya (c. 130 100 pop), 53 km (33 miles) from Tipitapa (c. 127 200 pop), 56 km (35 miles) from Granada (c. 89 400 pop), 34 km (21 miles) from Ciudad Sandino (c. 70 000 pop). Close country/countries that might be effected, Nicaragua (c. 5 996 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Larreynaga, San Jorge, Rivas.

There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days six and in the last 365 days thirty-nine earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 4 km NW of San Rafael del Sur, Nicaragua. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -86.4674° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 11.8826° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 104.41 km Depth of the event in kilometers.
Place 4km NW of San Rafael del Sur, Nicaragua Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-11-21 01:09:38 Time when the event occurred. UTC/GMT
Updated 2018-11-30 02:46:24 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 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 246 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 0.34 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.5 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 159 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us1000hxf7 Id of event.
Event Code 1000hxf7 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000hxf7, A comma-separated list of event ids that are associated to an event.

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