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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag strikes near Namuac in Philippines


Earthquake location 18.5386S, 121.1392WA light earthquake magnitude 4.5 (ml/mb) has occurred on Friday, 8 kilometers (5 miles) from Namuac in Philippines. The 4.5-magnitude earthquake was detected at 02:06:53 / 2:06 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: 27/12/24 / 2024-12-27 02:06:53 / December 27, 2024 @ 2:06 am. The earthquake occurred at a depth of 35 km (22 miles). Exact location of earthquake, longitude 121.1392 East, latitude 18.5386 North, depth = 35 km. All ids that are associated to the event: us6000pimm. Unique identifier: us6000pimm.

Epicenter of the event was 69 km (43 miles) from Laoag (c. 102 100 pop), 81 km (50 miles) from Batac City (c. 53 500 pop), 70 km (44 miles) from San Nicolas (c. 34 200 pop), 57 km (35 miles) from Aparri (c. 33 200 pop), 74 km (46 miles) from Magapit, Aguiguican (c. 13 700 pop), 72 km (44 miles) from Magapit (c. 11 200 pop), 10 km (6 miles) from Claveria (c. 10 600 pop). Closest city/cities/towns to epicentrum/hypocenter was Gonzaga, Piat, Batac City (min 5000 pop). Close country/countries that might be effected, Philippines (c. 99 900 000 pop).

In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days four and in the last 365 days nineteen earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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.

Did you feel anything?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. 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: 8 km SSW of Namuac, Philippines.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 121.1392° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.5386° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 8 km SSW of Namuac, Philippines Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2024-12-27 02:06:53 Time when the event occurred. UTC/GMT
Updated 2025-01-13 20:09:55 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 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 52 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 4.258 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.9 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 136 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 us6000pimm Id of event.
Event Code 6000pimm An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000pimm, A comma-separated list of event ids that are associated to an event.

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