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Light earthquake, 4.1 mag strikes near Whittier in Alaska



Earthquake location 60.5778S, -147.6151WA light earthquake with magnitude 4.1 (ml/mb) was detected on Wednesday, 58 km ESE of Whittier, Alaska (36 miles). Exact location of event, depth 4.4 km, -147.6151° West, 60.5778° North. The earthquake was roughly at a depth of 4.4 km (3 miles). The 4.1-magnitude earthquake has occurred at 07:44:11 / 7:44 am (local time epicenter). Event id: ak19231862. Ids that are associated to the earthquake: at00p7155p, us2000dy4d, ak19231862. Date and time of earthquake in UTC/GMT: 11/04/18 / 2018-04-11 16:44:11 / April 11, 2018 @ 4:44 pm. A tsunami warning has been issued near Whittier in Alaska (Does not indicate if a tsunami actually did or will exist).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days three and in the last 365 days thirty earthquakes of magnitude 3.0 or greater that have been detected in the same area.

How would you describe the shaking?

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. 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: 58 km ESE of Whittier, Alaska.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -147.6151° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 60.5778° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 4.4 km Depth of the event in kilometers.
Place 58km ESE of Whittier, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-04-11 16:44:11 Time when the event occurred. UTC/GMT
Updated 2018-04-11 17:05:52 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 13 The total number of felt reports
CDI 3 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 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 263 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ak The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,at,us,ak, 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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.57 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID ak19231862 Id of event.
Event Code 19231862 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00p7155p,us2000dy4d,ak19231862, A comma-separated list of event ids that are associated to an event.

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