Earthquake with magnitude of Md 2.5 on date 08-04-1993 and time 12:26:03 (UTC) in region 1 km S Isnello (PA)

A magnitude Md 2.5 earthquake occured in region: 1 km S Isnello (PA), on

  • 08-04-1993 12:26:03 (UTC)
  • 08-04-1993 14:26:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9350, 14.0050 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 1 1589 1589
Gratteri PA 5 963 2552
Collesano PA 6 4054 6606
Castelbuono PA 7 8943 15549
Lascari PA 9 3588 19137
Cefalù PA 12 14393 33530
Scillato PA 12 613 34143
Campofelice di Roccella PA 12 7537 41680
Polizzi Generosa PA 14 3407 45087
Pollina PA 14 2974 48061
Geraci Siculo PA 16 1945 50006
Caltavuturo PA 16 4017 54023
Petralia Sottana PA 16 2821 56844
San Mauro Castelverde PA 16 1701 58545
Cerda PA 17 5330 63875
Castellana Sicula PA 17 3411 67286
Petralia Soprana PA 18 3360 70646
Sclafani Bagni PA 18 426 71072

Municipalities with at least 50000 inhabitants

An earthquake occurred to
46 Km E of Bagheria (55387 inhabitants)
49 Km N of Caltanissetta (63360 inhabitants)
60 Km E of Palermo (674435 inhabitants)
79 Km NE of Agrigento (59770 inhabitants)
99 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 2.5 1993-04-08
12:26:03
37.935 14.005 5 2013-07-15
08:41:04
Bollettino Sismico Italiano INGV 183149
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1993-04-08 12:26:03 ± 0.641
Latitude 37.9350 ± 0.0259
Longitude 14.0050 ± 0.0344
Depth (km) 5 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 183149

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) 4172.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 287
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) 0.00040
Epicentral distance of station farthest from the epicenter (degree) 0.00486
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:2.5

Field Value
Value 2.5
Uncertainty
Num. used stations 3
Type of magnitude Md
Reference to an origin 183149
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 19:51:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
--.MNO.Z. 1993-04-08T12:26:25.00 10.0 undecidable manual SG 90 0.5439 1.02 0.1
--.MNO.Z. 1993-04-08T12:26:16.00 10.0 undecidable manual PG 90 0.5439 0.61 0.6
--.PL9.Z. 1993-04-08T12:26:08.18 10.0 undecidable manual SG 62 0.1221 -0.52 0.5
--.GIB.Z. 1993-04-08T12:26:06.80 10.0 undecidable manual SG 17 0.0555 0.34 0.7
--.PL9.Z. 1993-04-08T12:26:06.26 10.0 undecidable manual PG 62 0.1221 -0.31 1.7
--.CS9.Z. 1993-04-08T12:26:06.39 10.0 undecidable manual SG 87 0.0444 0.08 0.8
--.GIB.Z. 1993-04-08T12:26:05.42 10.0 undecidable manual PG 17 0.0555 0.14 1.9
--.CS9.Z. 1993-04-08T12:26:04.47 10.0 negative manual PG 87 0.0444 -0.72 1.8
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