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Light earthquake: M4.4 quake has struck near Agrihan in Northern Mariana Islands

Posted by admin on March 11, 2017 0 Comments

Earthquake location 18.7952S, 145.655WA light earthquake magnitude 4.4 (ml/mb) has struck on Wednesday, 3 km NNW of Agrihan, Northern Mariana Islands (2 miles). The epicenter of the earthquake was roughly 228.97 km (142 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 28/02/17 / 2017-02-28 18:35:00 / February 28, 2017 @ 6:35 pm. Exact location of earthquake, longitude 145.655 East, latitude 18.7952 North, depth = 228.97 km. The temblor was detected at 04:35:00 / 4:35 am (local time epicenter). Event ids that are associated to the earthquake: us100087qu. Id of event: us100087qu.

There are an estimated 13,000 light earthquakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. 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 one hundred and twenty-seven earthquakes of magnitude 3.0 or greater that has struck near.

Did you feel anything?

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: 3 km NNW of Agrihan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 145.655° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.7952° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 228.97 km Depth of the event in kilometers.
Place 3km NNW of Agrihan, Northern Mariana Islands Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-02-28 18:35:00 Time when the event occurred. UTC/GMT
Updated 2017-03-11 22:19:29 Time when the event was most recently updated. UTC/GMT
Timezone offset 600 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 298 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 5.231 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 97 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 us100087qu Id of event.
Event Code 100087qu An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100087qu, A comma-separated list of event ids that are associated to an event.

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