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Light earthquake, 4.1 mag was detected near Dover in Delaware

Earthquake location 39.2045S, -75.4212WA light earthquake magnitude 4.1 (ml/mb) has struck on Thursday, 10 kilometers (6 miles) from Dover in Delaware. Exact location of earthquake, -75.4212° West, 39.2045° North, depth 8.12 km. The 4.1-magnitude earthquake was detected at 16:47:31 / 4:47 pm (local time epicenter). All ids that are associated to the event: at00p09376, ld60146101, us1000bjkn. Unique identifier: us1000bjkn. A tsunami warning has been issued near Dover in Delaware (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 8.12 km (5 miles) below the earth’s surface. Exact time and date of event in UTC/GMT: 30/11/17 / 2017-11-30 21:47:31 / November 30, 2017 @ 9:47 pm.

Closest city/cities/towns to epicentrum/hypocenter was Fallston, Essex, Cambridge (min 5000 pop). The epicenter was 86 km (53 miles) from Philadelphia (c. 1 526 000 pop), 84 km (52 miles) from Camden (c. 77 300 pop), 61 km (38 miles) from Wilmington (c. 70 900 pop), 88 km (55 miles) from Cherry Hill (c. 70 500 pop), 46 km (29 miles) from Vineland (c. 60 700 pop), 43 km (27 miles) from South Vineland (c. 58 100 pop). Close country/countries that might be effected, United States (c. 310 233 000 pop).

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

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 10 km ENE of Dover, Delaware.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -75.4212° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 39.2045° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 8.12 km Depth of the event in kilometers.
Place 10km ENE of Dover, Delaware Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-11-30 21:47:31 Time when the event occurred. UTC/GMT
Updated 2017-11-30 22:27:59 Time when the event was most recently updated. UTC/GMT
Timezone offset -300 Timezone offset from UTC in minutes at the event epicenter.
Felt 4542 The total number of felt reports
CDI 5 The maximum reported intensity for the event.
MMI 5.71 The maximum estimated instrumental intensity for the event.
Alert Level green 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 1 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 759 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 ,at,ld,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 0.628 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.71 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 130 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mwr The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us1000bjkn Id of event.
Event Code 1000bjkn An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00p09376,ld60146101,us1000bjkn, A comma-separated list of event ids that are associated to an event.

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