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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.3 quake has struck near Azna in Iran


Earthquake location 33.0476S, 48.853WA light earthquake with magnitude 4.3 (ml/mb) was reported 62 kilometers (39 miles) from Azna in Iran on Sunday. Event id: us70004pzf. Ids that are associated to the earthquake: us70004pzf. Exact location of earthquake, 48.853° East, 33.0476° North, depth 10 km. The 4.3-magnitude earthquake has occurred at 11:54:28 / 11:54 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 21/07/19 / 2019-07-21 08:24:28 / July 21, 2019 @ 8:24 am. The earthquake occurred at a depth of 10 km (6 miles).

Earthquake epicenter was 67 km (42 miles) from Khorramābād (c. 329 800 pop), 88 km (54 miles) from Alīgūdarz (c. 91 000 pop), 63 km (39 miles) from Aznā (c. 47 500 pop). Nearest cities/city/towns to hypocenter/epicentrum was Alīgūdarz, Khorramābād, Aznā (min 5000 pop). Country/countries that might be effected, Iran (c. 76 923 000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. 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 eight earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 13,000 light quakes in the world.

How would you describe the shaking?

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: 62 km S of Azna, Iran.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude 48.853° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 33.0476° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 62km S of Azna, Iran Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-07-21 08:24:28 Time when the event occurred. UTC/GMT
Updated 2019-08-16 08:59:18 Time when the event was most recently updated. UTC/GMT
Timezone offset 210 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 284 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 3.319 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.57 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 60 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 us70004pzf Id of event.
Event Code 70004pzf An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us70004pzf, A comma-separated list of event ids that are associated to an event.

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