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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.5 quake has struck near Shahrud in Iran

Posted by admin on November 11, 2025 0 Comments

Earthquake location 36.6558S, 54.8533WA light earthquake with magnitude 4.5 (ml/mb) was reported 28 kilometers (17 miles) from Shahrud in Iran on Monday. 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 10 km (6 miles) below the earth’s surface. Id of earthquake: us6000ria9. Event ids that are associated: us6000ria9. Exact time and date of earthquake 20/10/25 / 2025-10-20 11:55:46 / October 20, 2025 @ 11:55 am UTC/GMT. The temblor was picked up at 11:55:46 / 11:55 am (local time epicenter). Exact location of event, depth 10 km, 54.8533° East, 36.6558° North.

Earthquake epicenter was 42 km (26 miles) from Gorgān (c. 244 900 pop), 29 km (18 miles) from Shahrud (c. 131 900 pop), 72 km (45 miles) from Gonbad-e Kāvūs (c. 131 400 pop), 71 km (44 miles) from Dāmghān (c. 67 700 pop), 56 km (35 miles) from Āzādshahr (c. 47 600 pop), 74 km (46 miles) from Āq Qāyeh (c. 5 100 pop). Nearby country/countries, Iran (c. 76 923 000 pop) (That might be effected). Closest city/cities/towns to epicentrum/hypocenter was Āq Qāyeh, Gonbad-e Kāvūs, Dāmghān (min 5000 pop).

Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days seven earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 28 km NNW of Shahrud, Iran.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 54.8533° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.6558° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 28 km NNW of Shahrud, Iran Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-10-20 11:55:46 Time when the event occurred. UTC/GMT
Updated 2025-11-11 14:27:03 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 312 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 56 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.896 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.71 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 102 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 us6000ria9 Id of event.
Event Code 6000ria9 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000ria9, A comma-separated list of event ids that are associated to an event.

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