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Moderate earthquake, 5 mag was detected near Old Harbor in Alaska

Posted by admin on September 1, 2025 0 Comments

Earthquake location 56.2794S, -151.9837WA moderate earthquake magnitude 5 (ml/mb) has struck on Monday, 130 km SE of Old Harbor, Alaska (81 miles). A tsunami warning has been issued near Old Harbor in Alaska (Does not indicate if a tsunami actually did or will exist). The 5-magnitude earthquake was detected at 11:02:10 / 11:02 am (local time epicenter). Exact location of earthquake, longitude -151.9837 West, latitude 56.2794 North, depth = 18.5 km. The earthquake occurred at a depth of 18.5 km (11 miles) below the earth’s surface. Event id: ak025b7povrc. Ids that are associated to the earthquake: at00t1wpbh, us7000qt03, ak025b7povrc. Global time and date of event 01/09/25 / 2025-09-01 11:02:10 / September 1, 2025 @ 11:02 am UTC/GMT.

Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. In the past 24 hours, there have been four, in the last 10 days four, in the past 30 days four and in the last 365 days ten earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 1320 moderate earthquakes in the world.

Did you feel anything?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity 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: 130 km SE of Old Harbor, Alaska.

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More information

Parameter Value Description
Magnitude 5 mb The magnitude for the event.
Longitude -151.9837° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 56.2794° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 18.5 km Depth of the event in kilometers.
Place 130 km SE of Old Harbor, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-09-01 11:02:10 Time when the event occurred. UTC/GMT
Updated 2025-09-01 11:29:50 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 3.649 The maximum estimated instrumental intensity for the event.
Alert Level green 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 385 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ak 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.89 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID ak025b7povrc Id of event.
Event Code 025b7povrc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00t1wpbh,us7000qt03,ak025b7povrc, A comma-separated list of event ids that are associated to an event.

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