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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag has occurred near Kalbay in Philippines

Earthquake location 5.7022S, 125.6671WA light earthquake magnitude 4.5 (ml/mb) strikes 18 kilometers (11 miles) from Kalbay in Philippines on Sunday. Unique identifier: us1000axm8. Ids that are associated to the event: us1000axm8. The epicenter of the earthquake was roughly 206.46 km (128 miles) below the earth’s surface. Exact location of earthquake, 125.6671° East, 5.7022° North, depth 206.46 km. Date and time of earthquake in UTC/GMT: 21/10/17 / 2017-10-21 18:43:06 / October 21, 2017 @ 6:43 pm. The 4.5-magnitude earthquake has occurred at 02:43:06 / 2:43 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Close country/countries, Philippines (c. 99 900 000 pop) (That might be effected). Epicenter of the event was 71 km (44 miles) from General Santos (c. 679 600 pop), 88 km (55 miles) from Polomolok (c. 64 000 pop), 77 km (48 miles) from Maluñgun (c. 52 200 pop), 61 km (38 miles) from Alabel (c. 43 300 pop), 79 km (49 miles) from Malita (c. 41 100 pop), 53 km (33 miles) from Glan (c. 24 300 pop), 51 km (32 miles) from Malapatan (c. 19 400 pop). Nearest cities/city/towns to hypocenter/epicentrum was Basiawan, Sulit, Polomolok (min 5000 pop).

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. In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days four and in the last 365 days fifty-nine earthquakes of magnitude 3.0 or greater that has occurred nearby.

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. 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: 18 km E of Kalbay, Philippines.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 125.6671° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 5.7022° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 206.46 km Depth of the event in kilometers.
Place 18km E of Kalbay, Philippines Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-10-21 18:43:06 Time when the event occurred. UTC/GMT
Updated 2017-11-16 22:12:03 Time when the event was most recently updated. UTC/GMT
Timezone offset 480 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.361 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.14 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 119 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 us1000axm8 Id of event.
Event Code 1000axm8 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000axm8, A comma-separated list of event ids that are associated to an event.

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