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Light earthquake: M4.4 quake has struck near Shemya Island in Alaska

Posted by admin on September 18, 2018 0 Comments

Earthquake location 51.4019S, 174.2728WA light earthquake with magnitude 4.4 (ml/mb) was detected on Wednesday, 147 km S of Shemya Island, Alaska (91 miles). Event id: us2000hghe. Ids that are associated to the earthquake: us2000hghe. Exact time and date of event in UTC/GMT: 18/09/18 / 2018-09-18 19:07:11 / September 18, 2018 @ 7:07 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Exact location of earthquake, longitude 174.2728 East, latitude 51.4019 North, depth = 10 km. The 4.4-magnitude earthquake was detected at 07:07:11 / 7:07 am (local time epicenter).

Each 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 one, in the past 30 days one and in the last 365 days twelve earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel the quake?

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: 147 km S of Shemya Island, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 174.2728° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.4019° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 147km S of Shemya Island, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-09-18 19:07:11 Time when the event occurred. UTC/GMT
Updated 2018-09-18 19:31:26 Time when the event was most recently updated. UTC/GMT
Timezone offset 720 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 3.149 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.63 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 124 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 us2000hghe Id of event.
Event Code 2000hghe An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000hghe, A comma-separated list of event ids that are associated to an event.

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