Earthquake with magnitude of Md 2.6 on date 04-09-1994 and time 22:55:18 (Italy) in region 5 km W Salaparuta (TP)

A magnitude Md 2.6 earthquake occured in region: 5 km W Salaparuta (TP), on

  • 04-09-1994 20:55:18 (UTC)
  • 04-09-1994 22:55:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.754, 12.953 at 7 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
Salaparuta TP 5 1696 1696
Montevago AG 7 3006 4702
Partanna TP 7 10607 15309
Santa Ninfa TP 7 5043 20352
Poggioreale TP 7 1494 21846
Santa Margherita di Belice AG 9 6363 28209
Gibellina TP 10 4115 32324
Salemi TP 15 10794 43118
Castelvetrano TP 16 31806 74924
Menfi AG 17 12592 87516
Vita TP 18 2056 89572
Sambuca di Sicilia AG 18 5877 95449
Calatafimi-Segesta TP 20 6712 102161

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Mazara del Vallo (51718 inhabitants)
46 Km E of Marsala (83194 inhabitants)
49 Km SE of Trapani (68759 inhabitants)
54 Km SW of Palermo (674435 inhabitants)
61 Km SW of Bagheria (55387 inhabitants)
74 Km NW of Agrigento (59770 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 2.6 1994-09-04
20:55:18
37.754 12.953 7 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 215869
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-09-04 20:55:18 ± 0.241
Latitude 37.7540 ± 0.0137
Longitude 12.9530 ± 0.0321
Depth (km) 7 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 215869

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) 3205.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 131
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.0013
Epicentral distance of station farthest from the epicenter (degree) 0.00874
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

Md:2.6

Field Value
Value 2.6
Uncertainty
Num. used stations 4
Type of magnitude Md
Reference to an origin 215869
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:23:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
--.USI.Z. 1994-09-04T20:55:52.34 10.0 undecidable manual SG 10 0.0087 0.25 0.5
--.CS9.Z. 1994-09-04T20:55:49.66 10.0 undecidable manual SG 77 0.0081 -0.16 0.5
--.GIB.Z. 1994-09-04T20:55:48.50 10.0 undecidable manual SG 74 0.0079 -0.59 0.1
--.FAI.Z. 1994-09-04T20:55:44.66 10.0 undecidable manual SG 129 0.0066 -0.14 0.5
--.USI.Z. 1994-09-04T20:55:37.84 10.0 undecidable manual PG 10 0.0087 0.02 1.5
--.GIB.Z. 1994-09-04T20:55:36.90 10.0 undecidable manual PG 74 0.0079 -0.01 1.5
--.CS9.Z. 1994-09-04T20:55:36.27 10.0 undecidable manual PG 77 0.0081 -0.24 1.1
--.FAI.Z. 1994-09-04T20:55:33.66 10.0 undecidable manual PG 129 0.0066 0.04 1.7
--.MCT.Z. 1994-09-04T20:55:30.68 10.0 undecidable manual PG 104 0.0048 0.94 0.1
--.CVT.Z. 1994-09-04T20:55:23.73 10.0 undecidable manual SG 239 0.0013 -0.78 0.1
--.CVT.Z. 1994-09-04T20:55:21.96 10.0 positive manual PG 239 0.0013 0.05 3.3
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