Earthquake with magnitude of Md 2.4 on date 17-11-1986 and time 17:25:54 (UTC) in region 4 km SE Gangi (PA)

A magnitude Md 2.4 earthquake occured in region: 4 km SE Gangi (PA), on

  • 17-11-1986 17:25:54 (UTC)
  • 17-11-1986 18:25:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.78, 14.24 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Gangi PA 4 6811 6811
Sperlinga EN 10 805 7616
Geraci Siculo PA 12 1945 9561
Petralia Soprana PA 12 3360 12921
Bompietro PA 13 1401 14322
Castel di Lucio ME 13 1294 15616
Petralia Sottana PA 14 2821 18437
Nicosia EN 14 13899 32336
Blufi PA 15 1029 33365
Alimena PA 15 2032 35397
San Mauro Castelverde PA 16 1701 37098
Castellana Sicula PA 18 3411 40509
Mistretta ME 20 4791 45300

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of Caltanissetta (63360 inhabitants)
72 Km E of Bagheria (55387 inhabitants)
78 Km NE of Agrigento (59770 inhabitants)
79 Km N of Gela (75827 inhabitants)
80 Km W of Catania (314555 inhabitants)
83 Km W of Acireale (52622 inhabitants)
86 Km E of Palermo (674435 inhabitants)
96 Km N of Vittoria (63339 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000
Md 2.4 1986-11-17
17:25:54
37.78 14.25 10 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 37109
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1986-11-17 17:25:54 ± 0.255
Latitude 37.78 ± 0.02
Longitude 14.25 ± 0.02
Depth (km) 10 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 37109

Uncertainty

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) 3014
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 179
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
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) 0.00243
Epicentral distance of station farthest from the epicenter (degree) 0.01303
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitude information

Md:2.4

Field Value
Value 2.4
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 37109
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 17:37:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.SO9.Z. 1986-11-17T17:26:39.50 10.0 undecidable manual SN 77 0.013 -0.01 0.9
--.AT9.Z. 1986-11-17T17:26:30.00 10.0 undecidable manual SN 68 0.0092 0.61 0.6
--.ML9.Z. 1986-11-17T17:26:25.00 10.0 undecidable manual SG 140 0.0077 1 0.2
--.SO9.Z. 1986-11-17T17:26:20.00 10.0 undecidable manual PN 77 0.013 -0.45 1.6
--.ML9.Z. 1986-11-17T17:26:11.00 10.0 undecidable manual PG 140 0.0077 -0.49 2
--.AT9.Z. 1986-11-17T17:26:10.00 10.0 undecidable manual PN! 68 0.0092 -4.61 0
--.GIB.Z. 1986-11-17T17:26:04.50 10.0 undecidable manual SG 320 0.0024 -0.49 0.8
--.GIB.Z. 1986-11-17T17:26:01.00 10.0 undecidable manual PG 320 0.0024 0.49 2
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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