Earthquake with magnitude of Md 2.5 on date 23-10-2002 and time 03:00:28 (Italy) in region Tirreno Meridionale (MARE)

A magnitude Md 2.5 earthquake occured in region: Tirreno Meridionale (MARE), on

  • 23-10-2002 01:00:28 (UTC)
  • 23-10-2002 03:00:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.621, 13.913 at 5 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

An earthquake occurred to
70 Km NE of Bagheria (55387 inhabitants)
74 Km NE of Palermo (674435 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 2.5
ML-VAX 2.2
38.621 13.913 5 2013-07-15
Bollettino Sismico Italiano INGV 455369
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2002-10-23 01:00:28 ± 0.541
Latitude 38.6210 ± 0.0279
Longitude 13.9130 ± 0.0382
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 455369


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) 4538
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 251
Number of associated phases, regardless of their use for origin computation 7
Number of defining phases 7
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00518
Epicentral distance of station farthest from the epicenter (degree) 0.0106
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information


Field Value
Value 2.5
Num. used stations 3
Type of magnitude Md
Reference to an origin 455369
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 00:11:04


Field Value
Value 2.2
Num. used stations 3
Type of magnitude ML
Reference to an origin 455369
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
--.CLTB.Z. 2002-10-23T01:01:08.15 10.0 undecidable manual SN 207 0.0106 -0.09 0.7
--.CLTB.Z. 2002-10-23T01:00:52.60 10.0 undecidable manual PN 207 0.0106 0.67 0.5
--.GIB.Z. 2002-10-23T01:00:52.10 10.0 undecidable manual SG 171 0.0057 0.3 0.6
--.USI.Z. 2002-10-23T01:00:49.18 10.0 undecidable manual SG 278 0.0052 -0.63 0.3
--.CSLB.Z. 2002-10-23T01:00:42.38 10.0 undecidable manual PG 170 0.0062 -0.48 1.1
--.GIB.Z. 2002-10-23T01:00:41.67 10.0 undecidable manual PG 171 0.0057 -0.17 1.9
--.USI.Z. 2002-10-23T01:00:40.90 10.0 undecidable manual PG 278 0.0052 0.15 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