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Light earthquake: M4.1 quake has struck near Basco in Philippines

Posted by admin on February 28, 2021 0 Comments

Earthquake location 21.1498S, 121.993WA light earthquake magnitude 4.1 (ml/mb) has struck on Sunday, 77 kilometers (48 miles) from Basco in Philippines. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.1-magnitude earthquake was detected at 19:56:47 / 7:56 pm (local time epicenter). The epicenter of the earthquake was roughly 161.26 km (100 miles) below the earth’s surface. Event id: us7000deea. Ids that are associated to the earthquake: us7000deea. Exact location of event, depth 161.26 km, 121.993° East, 21.1498° North. Date and time of earthquake in UTC/GMT: 28/02/21 / 2021-02-28 19:56:47 / February 28, 2021 @ 7:56 pm.

Event epicenter was 78 km (48 miles) from Basco (c. 7 300 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Basco. Nearby country/countries, Philippines (c. 99 900 000 pop) (That might be effected).

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 nineteen earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light earthquakes in the world.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 77 km N of Basco, Philippines. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 121.993° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 21.1498° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 161.26 km Depth of the event in kilometers.
Place 77 km N of Basco, Philippines Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-02-28 19:56:47 Time when the event occurred. UTC/GMT
Updated 2021-02-28 20:41:37 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.863 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.88 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 133 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 us7000deea Id of event.
Event Code 7000deea An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000deea, A comma-separated list of event ids that are associated to an event.

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