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Moderate earthquake, 5.5 mag was detected near Attu Station in Alaska

Posted by admin on April 2, 2025 0 Comments

Earthquake location 53.3335S, 172.8099WA moderate earthquake magnitude 5.5 (ml/mb) has struck on Wednesday, 59 km NNW of Attu Station, Alaska (37 miles). Date and time of earthquake in UTC/GMT: 02/04/25 / 2025-04-02 16:26:35 / April 2, 2025 @ 4:26 pm. The temblor was picked up at 16:26:35 / 4:26 pm (local time epicenter). Exact location of event, longitude 172.8099 East, latitude 53.3335 North, depth = 11.771 km. The earthquake was roughly at a depth of 11.771 km (7 miles). Unique identifier: us7000ppga. Ids that are associated to the event: at00su3n0f, us7000ppga, ak02548f4k89. A tsunami warning has been issued near Attu Station in Alaska (Does not indicate if a tsunami actually did or will exist).

Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days three and in the last 365 days thirteen earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 1320 moderate earthquakes 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: 59 km NNW of Attu Station, Alaska.

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More information

Parameter Value Description
Magnitude 5.5 mb The magnitude for the event.
Longitude 172.8099° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 53.3335° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 11.771 km Depth of the event in kilometers.
Place 59 km NNW of Attu Station, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-04-02 16:26:35 Time when the event occurred. UTC/GMT
Updated 2025-04-02 16:50:55 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 6.531 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 1 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 ,at,us,ak, A comma-separated list of network contributors.
Number of Stations Used 172 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.987 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.73 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 53 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 us7000ppga Id of event.
Event Code 7000ppga An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00su3n0f,us7000ppga,ak02548f4k89, A comma-separated list of event ids that are associated to an event.

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