Earthquake with magnitude of Mw 7.7 on date 05-01-2013 and time 09:58:19 (Italy) in region Southeastern Alaska, United States [Sea: United States]

A magnitude Mw 7.7 earthquake occured in region: Southeastern Alaska, United States [Sea: United States], on

  • 05-01-2013 08:58:19 (UTC)
  • 05-01-2013 09:58:19 (UTC +01:00) Italian time
  • 05-01-2013 00:58:19 (UTC -08:00) local time in the region of the earthquake (America/Metlakatla)

and geographic coordinates (lat, lon) 55.28, -134.67 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.

Recent and historical Seismicity
Seismic hazard
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Mw 7.7 2013-01-05
55.28 -134.67 10 2014-10-21
Sala Sismica INGV-Roma 2797031
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2013-01-05 08:58:19
Latitude 55.28
Longitude -134.67
Depth (km) 10 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 200 -> AGENDA-INGV
Event type earthquake
Origin ID 2797031


Field Value
Preferred uncertainty description
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 0
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 129
Number of associated phases, regardless of their use for origin computation 1
Number of defining phases 1
RMS of the travel time residuals of the arrivals used for the origin computation (sec)
Epicentral distance of station closest to the epicenter (degree)
Epicentral distance of station farthest from the epicenter (degree)
Number of stations at which the event was observed 0
Number of stations from which data was used for origin computation 0
Magnitude information


Field Value
Value 7.7
Uncertainty 0.3
Num. used stations
Type of magnitude Mw
Reference to an origin 2797031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-01-05 09:24:49
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download