Earthquake with magnitude of Md 2.1 on date 24-04-1994 and time 22:51:23 (Italy) in region 4 km W Trabia (PA)

A magnitude Md 2.1 earthquake occured in region: 4 km W Trabia (PA), on

  • 24-04-1994 20:51:23 (UTC)
  • 24-04-1994 22:51:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 38.0080, 13.6080 at 15 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
Trabia PA 4 10505 10505
Altavilla Milicia PA 6 8210 18715
Termini Imerese PA 8 26263 44978
Casteldaccia PA 9 11685 56663
Ventimiglia di Sicilia PA 10 1953 58616
Caccamo PA 10 8196 66812
Baucina PA 11 2008 68820
Santa Flavia PA 11 11272 80092
Bagheria PA 12 55387 135479
Ciminna PA 13 3780 139259
Misilmeri PA 14 29258 168517
Bolognetta PA 14 4179 172696
Villafrati PA 15 3368 176064
Ficarazzi PA 16 12933 188997
CefalĂ  Diana PA 16 1041 190038
Villabate PA 16 20252 210290
Sciara PA 17 2822 213112
Marineo PA 18 6647 219759
Godrano PA 20 1181 220940
Belmonte Mezzagno PA 20 11273 232213

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km SE of Bagheria (55387 inhabitants)
25 Km SE of Palermo (674435 inhabitants)
70 Km NW of Caltanissetta (63360 inhabitants)
78 Km N of Agrigento (59770 inhabitants)
96 Km E of Trapani (68759 inhabitants)
98 Km E of Mazara del Vallo (51718 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 2.1
ML-VAX 3.0
1994-04-24
20:51:23
38.008 13.608 15 2013-07-15
08:40:51
Bollettino Sismico Italiano INGV 208489
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 1994-04-24 20:51:23 ± 0.346
Latitude 38.0080 ± 0.0614
Longitude 13.6080 ± 0.0209
Depth (km) 15 ± 4 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-VAX
Event type earthquake
Origin ID 208489

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) 7073.9
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 318
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) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00291
Epicentral distance of station farthest from the epicenter (degree) 0.00996
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:2.1

Field Value
Value 2.1
Uncertainty
Num. used stations 2
Type of magnitude Md
Reference to an origin 208489
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-04 20:16:26

ML:3.0

Field Value
Value 3.0
Uncertainty
Num. used stations 1
Type of magnitude ML
Reference to an origin 208489
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
--.SA1.Z. 1994-04-24T20:51:59.43 10.0 undecidable manual SN 59 1.11 0.09 0.6
--.SA1.Z. 1994-04-24T20:51:44.10 10.0 undecidable manual PN 59 1.11 -0.09 1.4
--.CS9.Z. 1994-04-24T20:51:37.50 10.0 undecidable manual SG 101 0.3663 0.03 0.8
--.GIB.Z. 1994-04-24T20:51:36.00 10.0 undecidable manual SG 93 0.3219 -0.17 0.7
--.PL9.Z. 1994-04-24T20:51:33.00 10.0 undecidable manual PG 92 0.4107 0.51 0.4
--.CS9.Z. 1994-04-24T20:51:31.50 10.0 undecidable manual PG 101 0.3663 -0.06 2.1
--.GIB.Z. 1994-04-24T20:51:30.50 10.0 undecidable manual PG 93 0.3219 -0.31 1.1
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