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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag strikes near Namuac in Philippines


Earthquake location 19.0612S, 121.2893WA light earthquake with magnitude 4.1 (ml/mb) was detected on Saturday, 51 kilometers (32 miles) from Namuac in Philippines. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location, longitude 121.2893° East, latitude 19.0612° North, depth = 43.638 km. Exact time and date of event in UTC/GMT: 28/06/25 / 2025-06-28 11:12:43 / June 28, 2025 @ 11:12 am. All ids that are associated to the event: us7000qbl9. Unique identifier: us7000qbl9. The epicenter of the earthquake was roughly 43.638 km (27 miles) below the earth’s surface. The temblor was picked up at 11:12:43 / 11:12 am (local time epicenter).

Closest city/cities/towns to epicentrum/hypocenter was Aparri, Ballesteros, Cabaritan East (min 5000 pop). Earthquake epicenter was 87 km (54 miles) from Aparri (c. 33 200 pop), 55 km (34 miles) from Claveria (c. 10 600 pop), 75 km (46 miles) from Cabaritan East (c. 9 300 pop), 76 km (47 miles) from Ballesteros (c. 5 600 pop). Nearby country/countries that might be effected, Philippines (c. 99 900 000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. 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 twenty-nine earthquakes of magnitude 3.0 or greater that have been detected in the same area.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 51 km NNE of Namuac, Philippines.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 121.2893° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.0612° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 43.638 km Depth of the event in kilometers.
Place 51 km NNE 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 2025-06-28 11:12:43 Time when the event occurred. UTC/GMT
Updated 2025-07-10 06:03:36 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 259 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 26 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 3.743 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.85 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 144 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 us7000qbl9 Id of event.
Event Code 7000qbl9 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qbl9, A comma-separated list of event ids that are associated to an event.

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