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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag strikes near Rat Islands, Aleutian Islands, Alaska

Posted by admin on September 21, 2025 0 Comments

Earthquake location 51.551S, 178.3631WA light earthquake with magnitude 4 (ml/mb) was detected on Monday, Rat Islands, Aleutian Islands, Alaska (0 miles). Exact time and date of earthquake 25/08/25 / 2025-08-25 22:50:12 / August 25, 2025 @ 10:50 pm UTC/GMT. The earthquake was roughly at a depth of 89.148 km (55 miles). Event id: us7000qxc4. Ids that are associated to the earthquake: us7000qxc4. Exact location of event, depth 89.148 km, 178.3631° East, 51.551° North. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4-magnitude earthquake was detected at 22:50:12 / 10:50 pm (local time epicenter).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been seven, in the last 10 days nine, in the past 30 days thirteen and in the last 365 days one hundred and thirty earthquakes of magnitude 3.0 or greater that has struck near.

Did you feel it?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: Rat Islands, Aleutian Islands, Alaska. This information 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 178.3631° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.551° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 89.148 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 2025-08-25 22:50:12 Time when the event occurred. UTC/GMT
Updated 2025-09-21 22:04:56 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 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 ,us, A comma-separated list of network contributors.
Number of Stations Used 30 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.425 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.42 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 189 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 us7000qxc4 Id of event.
Event Code 7000qxc4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qxc4, A comma-separated list of event ids that are associated to an event.

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