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Minor World Earthquakes Magnitude -3.9

Minor earthquake 3.5 mag, 252 km SE of Kodiak, Alaska

Earthquake location 56.1672S, -149.5106WA minor earthquake with magnitude 3.5 (ml/mb) was detected on Tuesday, 252 km SE of Kodiak, Alaska (157 miles). The epicenter of the earthquake was roughly 25.61 km (16 miles) below the earth’s surface. Exact location, longitude -149.5106° West, latitude 56.1672° North, depth = 25.61 km. Exact time and date of earthquake 20/02/18 / 2018-02-20 18:11:52 / February 20, 2018 @ 6:11 pm UTC/GMT. Id of earthquake: us2000d9di. Event ids that are associated: ak18471396, us2000d9di. The 3.5-magnitude earthquake has occurred at 08:11:52 / 8:11 am (local time epicenter).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. There are an estimated 130,000 minor earthquakes in the world each year. In the past 24 hours, there have been four hundred and four, in the last 10 days seven hundred and fourty-six, in the past 30 days two thousand, seven hundred and three and in the last 365 days two thousand, seven hundred and seven earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel the quake?

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. 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: 252 km SE of Kodiak, Alaska.

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More information

Parameter Value Description
Magnitude 3.5 mb The magnitude for the event.
Longitude -149.5106° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 56.1672° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 25.61 km Depth of the event in kilometers.
Place 252km SE of Kodiak, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-02-20 18:11:52 Time when the event occurred. UTC/GMT
Updated 2018-03-16 22:11:15 Time when the event was most recently updated. UTC/GMT
Timezone offset -600 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 188 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 ,ak,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 2.335 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.1 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 178 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 us2000d9di Id of event.
Event Code 2000d9di An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak18471396,us2000d9di, A comma-separated list of event ids that are associated to an event.

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