Earthquake with magnitude of Md 2.7 on date 30-11-1987 and time 13:21:02 (UTC) in region Tirreno Meridionale (MARE)

A magnitude Md 2.7 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 30-11-1987 13:21:02 (UTC)
  • 30-11-1987 14:21:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 39.676, 15.195 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Md 2.7
ML-VAX 1.8
39.676 15.195 10 2013-07-15
Bollettino Sismico Italiano INGV 59069
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 1987-11-30 13:21:02 ± 0.533
Latitude 39.6760 ± 0.0169
Longitude 15.1950 ± 0.0530
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 59069


Field Value
Preferred uncertainty description horizontal uncertainty
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) 4906.9
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 218
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.5
Epicentral distance of station closest to the epicenter (degree) 0.00478
Epicentral distance of station farthest from the epicenter (degree) 0.01554
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information


Field Value
Value 2.7
Num. used stations 3
Type of magnitude Md
Reference to an origin 59069
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:56:28


Field Value
Value 1.8
Num. used stations 2
Type of magnitude ML
Reference to an origin 59069
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-04-28 13:07:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.GRI.Z. 1987-11-30T13:21:44.00 10.0 undecidable manual SN 131 0.0114 0.78 0.3
--.ROI.Z. 1987-11-30T13:21:37.50 10.0 undecidable manual SN 95 0.0096 -0.63 0.5
--.SOI.Z. 1987-11-30T13:21:32.86 10.0 undecidable manual PN 157 0.0155 0.57 0.9
--.ATN.Z. 1987-11-30T13:21:28.44 10.0 undecidable manual PN 172 0.0138 -1.04 0.5
--.GRI.Z. 1987-11-30T13:21:26.42 10.0 undecidable manual PN 131 0.0114 0.45 1.3
--.ROI.Z. 1987-11-30T13:21:23.20 10.0 undecidable manual PN 95 0.0096 0.16 1.9
--.MGR.Z. 1987-11-30T13:21:21.95 10.0 undecidable manual SG 30 0.0048 0.36 0.7
--.CSI.Z. 1987-11-30T13:21:18.50 10.0 undecidable manual PG 82 0.0076 -0.8 1
--.MGR.Z. 1987-11-30T13:21:13.58 10.0 undecidable manual PG 30 0.0048 0.09 2
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download