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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4 quake has struck near Little Sitkin Island in Alaska

Posted by admin on August 17, 2016 0 Comments

Earthquake location 51.801S, 178.4403WA light earthquake with magnitude 4 (ml/mb) was detected on Tuesday, 17 km SSW of Little Sitkin Island, Alaska (11 miles). The 4-magnitude earthquake has occurred at 14:57:39 / 2:57 pm (local time epicenter). Exact location, longitude 178.4403° East, latitude 51.801° North, depth = 100.5 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: ak13803864, us100069lw. Id of event: us100069lw. Date and time of earthquake in UTC/GMT: 26/07/16 / 2016-07-26 23:57:39 / July 26, 2016 @ 11:57 pm. The epicenter was at a depth of 100.5 km (62 miles).

In the past 24 hours, there have been seven, in the last 10 days twelve, in the past 30 days twenty-five and in the last 365 days one hundred and fourty-two earthquakes of magnitude 3.0 or greater that was reported nearby. 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.

Did you feel anything?

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: 17 km SSW of Little Sitkin Island, Alaska. 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 178.4403° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.801° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 100.5 km Depth of the event in kilometers.
Place 17km SSW of Little Sitkin 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 2016-07-26 23:57:39 Time when the event occurred. UTC/GMT
Updated 2016-08-17 04:30:31 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 ,ak,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 0.153 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.51 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 161 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 us100069lw Id of event.
Event Code 100069lw An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak13803864,us100069lw, A comma-separated list of event ids that are associated to an event.

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