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Earthquake breaking news, Moderate World Earthquakes Magnitude 5–5.9

Moderate earthquake: M5.5 quake has struck near Rat Islands, Aleutian Islands, Alaska

Posted by admin on December 13, 2025 0 Comments

Earthquake location 51.9234S, 178.3373WA moderate earthquake magnitude 5.5 (ml/mb) has occurred on Saturday, Rat Islands, Aleutian Islands, Alaska (0 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 109.647 km (68 miles). Exact location of event, longitude 178.3373 East, latitude 51.9234 North, depth = 109.647 km. Event id: us6000rumi. Ids that are associated to the earthquake: us6000rumi, ak2025ylyvgt. The 5.5-magnitude earthquake has occurred at 10:50:59 / 10:50 am (local time epicenter). Date and time of earthquake in UTC/GMT: 13/12/25 / 2025-12-13 10:50:59 / December 13, 2025 @ 10:50 am.

In the past 24 hours, there have been one, in the last 10 days seven, in the past 30 days twenty-one and in the last 365 days one hundred and thirty-two earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. Each year there are an estimated 1320 moderate quakes in the world.

Questions or comments?

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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: Rat Islands, Aleutian Islands, Alaska.

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More information

Parameter Value Description
Magnitude 5.5 mb The magnitude for the event.
Longitude 178.3373° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.9234° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 109.647 km Depth of the event in kilometers.
Place Rat Islands, Aleutian Islands, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-12-13 10:50:59 Time when the event occurred. UTC/GMT
Updated 2025-12-13 11:06:29 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 3.455 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 465 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,ak, A comma-separated list of network contributors.
Number of Stations Used 85 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.148 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.94 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 31 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mww The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us6000rumi Id of event.
Event Code 6000rumi An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000rumi,ak2025ylyvgt, A comma-separated list of event ids that are associated to an event.

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