Earthquake with magnitude of Md 2.0 on date 18-07-1993 and time 20:41:40 (UTC) in region 6 km S Isnello (PA)

A magnitude Md 2.0 earthquake occured in region: 6 km S Isnello (PA), on

  • 18-07-1993 20:41:40 (UTC)
  • 18-07-1993 22:41:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8950, 14.0200 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

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Isnello PA 6 1589 1589
Castelbuono PA 8 8943 10532
Collesano PA 8 4054 14586
Gratteri PA 9 963 15549
Polizzi Generosa PA 9 3407 18956
Scillato PA 11 613 19569
Petralia Sottana PA 12 2821 22390
Geraci Siculo PA 13 1945 24335
Castellana Sicula PA 13 3411 27746
Petralia Soprana PA 13 3360 31106
Lascari PA 14 3588 34694
Caltavuturo PA 14 4017 38711
San Mauro Castelverde PA 15 1701 40412
Pollina PA 16 2974 43386
Campofelice di Roccella PA 16 7537 50923
Cefalù PA 16 14393 65316
Blufi PA 17 1029 66345
Sclafani Bagni PA 17 426 66771
Bompietro PA 18 1401 68172
Cerda PA 18 5330 73502
Gangi PA 20 6811 80313

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km N of Caltanissetta (63360 inhabitants)
49 Km E of Bagheria (55387 inhabitants)
63 Km E of Palermo (674435 inhabitants)
75 Km NE of Agrigento (59770 inhabitants)
94 Km N of Gela (75827 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 2.0
ML-VAX 1.5
1993-07-18
20:41:40
37.895 14.02 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 191599
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-07-18 20:41:40 ± 0.659
Latitude 37.8950 ± 0.0308
Longitude 14.0200 ± 0.0230
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 191599

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) 3979.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 297
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) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00049
Epicentral distance of station farthest from the epicenter (degree) 0.00146
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 4
Magnitudes information

Md:2.0

Field Value
Value 2.0
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 191599
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:00:00

ML:1.5

Field Value
Value 1.5
Uncertainty
Num. used stations 2
Type of magnitude ML
Reference to an origin 191599
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(km) Takeoff_angle Residual Weight
--.TU9.Z. 1993-07-18T20:41:46.53 10.0 undecidable manual SG 65 0.1665 -0.11 0.8
--.TU9.Z. 1993-07-18T20:41:44.15 10.0 undecidable manual PG 65 0.1665 0.3 1.5
--.GIB.Z. 1993-07-18T20:41:44.80 10.0 undecidable manual SG 2 0.0888 0.73 0.2
--.PL9.Z. 1993-07-18T20:41:44.83 10.0 undecidable manual SG 45 0.1332 -0.76 0.2
--.PL9.Z. 1993-07-18T20:41:43.68 10.0 undecidable manual PG 45 0.1332 0.45 1.3
--.CS9.Z. 1993-07-18T20:41:43.00 10.0 undecidable manual SG 43 0.0555 0.13 0.9
--.GIB.Z. 1993-07-18T20:41:42.00 10.0 undecidable manual PG 2 0.0888 -0.36 1.7
--.CS9.Z. 1993-07-18T20:41:41.26 10.0 undecidable manual PG 43 0.0555 -0.41 1.5
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download