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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.4 mag, 20 km N of Harrison, Philippines

Earthquake location 13.6322S, 120.4251WA light earthquake magnitude 4.4 (ml/mb) has occurred on Friday, 20 kilometers (12 miles) from Harrison in Philippines. Unique identifier: us7000cp77. Ids that are associated to the event: us7000cp77. The 4.4-magnitude earthquake was detected at 04:40:59 / 4:40 am (local time epicenter). Exact time and date of event in UTC/GMT: 04/12/20 / 2020-12-04 04:40:59 / December 4, 2020 @ 4:40 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 77.88 km (48 miles). Exact location of earthquake, longitude 120.4251 East, latitude 13.6322 North, depth = 77.88 km.

Nearest cities/city/towns to hypocenter/epicentrum was Bulihan, Maguyam, Santo Tomas (min 5000 pop). Nearby country/countries that might be effected, Philippines (c. 99 900 000 pop). Epicenter of the earthquake was 70 km (43 miles) from Batangas (c. 237 400 pop), 87 km (54 miles) from Lipa City (c. 212 300 pop), 88 km (54 miles) from Silang (c. 119 500 pop), 89 km (56 miles) from Mariveles (c. 84 600 pop), 93 km (58 miles) from Tanauan (c. 68 500 pop), 85 km (53 miles) from Calapan (c. 66 000 pop).

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

Questions or comments?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 20 km N of Harrison, Philippines. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 120.4251° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 13.6322° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 77.88 km Depth of the event in kilometers.
Place 20 km N of Harrison, Philippines Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-12-04 04:40:59 Time when the event occurred. UTC/GMT
Updated 2020-12-09 02:43:22 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 298 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 3.897 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.65 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 us7000cp77 Id of event.
Event Code 7000cp77 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000cp77, A comma-separated list of event ids that are associated to an event.

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