Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 04-02-2023 and time 04:03:46 (Italy) in region 2 km NE Gangi (PA)

A magnitude ML 1.5 earthquake occured in region: 2 km NE Gangi (PA), on

  • 04-02-2023 03:03:46 (UTC)
  • 04-02-2023 04:03:46 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8070, 14.2210 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.

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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 2 6811 6811
Geraci Siculo PA 8 1945 8756
Petralia Soprana PA 10 3360 12116
Petralia Sottana PA 11 2821 14937
Castel di Lucio ME 12 1294 16231
San Mauro Castelverde PA 12 1701 17932
Bompietro PA 13 1401 19333
Sperlinga EN 13 805 20138
Blufi PA 14 1029 21167
Alimena PA 16 2032 23199
Castellana Sicula PA 16 3411 26610
Nicosia EN 17 13899 40509
Castelbuono PA 18 8943 49452
Mistretta ME 19 4791 54243
Pettineo ME 19 1350 55593
Polizzi Generosa PA 19 3407 59000
Tusa ME 20 2925 61925

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km NE of Caltanissetta (63360 inhabitants)
69 Km E of Bagheria (55387 inhabitants)
79 Km NE of Agrigento (59770 inhabitants)
82 Km N of Gela (75827 inhabitants)
83 Km E of Palermo (674435 inhabitants)
83 Km W of Catania (314555 inhabitants)
86 Km W of Acireale (52622 inhabitants)
99 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 		ML 1.5 2023-02-04
03:03:46		 37.8067 14.2212 5 2024-03-01
17:18:02		 Bollettino Sismico Italiano INGV 116086551
Reviewed
Rev100 		ML 1.5 2023-02-04
03:03:46		 37.8302 14.2443 5 2023-02-04
03:10:41		 Sala Sismica INGV-Roma 114033621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-04 03:03:46 ± 0.18
Latitude 37.8067 ± 0.0108
Longitude 14.2212 ± 0.0114
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116086551

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1060
Semi-minor axis of confidence ellipse (meter) 972
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 223
Circular confidence region, given by single value of horizontal uncertainty (meter) 1060.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.18346
Epicentral distance of station farthest from the epicenter (degree) 1.11156
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 116086551
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-05 10:01:19

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 114033621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-04 03:10:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2023-02-04T03:04:07.56 0.3 undecidable manual S 65 62.7927 50 0.63 57
IV.MSRU.HHZ. 2023-02-04T03:04:07.36 0.3 undecidable manual P 65 123.3876 50 -0.2 62
IV.AIO.HHZ. 2023-02-04T03:04:02.12 0.3 undecidable manual P 78 90.4428 50 -0.37 64
IV.MSFR.HHZ. 2023-02-04T03:04:01.28 0.6 undecidable manual S 52 41.0256 97 0.57 45
IV.RAFF.HHZ. 2023-02-04T03:03:58.43 0.3 undecidable manual P 169 65.9895 50 -0.29 68
IV.MUCR.HHZ. 2023-02-04T03:03:57.71 0.1 undecidable manual P 65 62.7927 50 -0.52 87
IV.CPTP.HHZ. 2023-02-04T03:03:56.41 0.3 undecidable manual P 187 44.622 96 1.07 54
IV.CMDO.HHZ. 2023-02-04T03:03:56.61 0.3 undecidable manual P 223 51.7038 50 0.09 71
IV.GIB.HHZ. 2023-02-04T03:03:56.41 0.3 undecidable manual S 320 26.5512 101 0.67 64
IV.PLLN.EHZ. 2023-02-04T03:03:54.35 0.3 undecidable manual S 342 21.7671 103 0.26 73
IV.MSFR.HHZ. 2023-02-04T03:03:54.10 0.3 undecidable manual P 52 41.0256 97 -0.54 64
IV.ALJA.HHZ. 2023-02-04T03:03:54.20 1.0 undecidable manual P 261 41.5251 97 -0.53 22
IV.CSLB.HHZ. 2023-02-04T03:03:53.69 0.3 undecidable manual S 315 20.3685 104 0.05 77
IV.GALF.HHZ. 2023-02-04T03:03:53.20 0.1 undecidable manual P 109 32.1456 99 0.34 98
IV.GIB.HHZ. 2023-02-04T03:03:51.90 0.1 undecidable manual P 320 26.5512 101 0.13 100
IV.PLLN.EHZ. 2023-02-04T03:03:50.47 0.1 undecidable manual P 342 21.7671 103 -0.35 96
IV.CSLB.HHZ. 2023-02-04T03:03:49.90 0.1 undecidable manual P 315 20.3685 104 -0.66 87
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSLB.HHN. ML:1.0 0.00009235 1.54 AML other m 2023-02-04T03:03:54.14
IV.CSLB.HHE. ML:1.1 0.00011245 0.54 AML other m 2023-02-04T03:03:56.41
IV.PLLN.EHE. ML:1.5 0.00024349999999999998 0.4 AML other m 2023-02-04T03:03:57.47
IV.PLLN.EHN. ML:1.7 0.0004115 0.38 AML other m 2023-02-04T03:03:58.40
IV.GIB.HHN. ML:1.5 0.0001785 0.44 AML other m 2023-02-04T03:03:59.52
IV.GIB.HHE. ML:1.6 0.00025 1.54 AML other m 2023-02-04T03:04:01.22
IV.MSFR.HHE. ML:1.2 0.00005075 0.58 AML other m 2023-02-04T03:04:04.45
IV.GALF.HHN. ML:1.9 0.000366 1.38 AML other m 2023-02-04T03:04:05.75
IV.GALF.HHE. ML:1.9 0.0003345 1.62 AML other m 2023-02-04T03:04:08.87
IV.MSFR.HHN. ML:1.3 0.0000629 0.42 AML other m 2023-02-04T03:04:08.34
IV.CPTP.HHE. ML:1.5 0.0001028 0.88 AML other m 2023-02-04T03:04:10.91
IV.MUCR.HHN. ML:1.5 0.00006565 0.32 AML other m 2023-02-04T03:04:11.34
IV.MUCR.HHE. ML:1.6 0.00007295 0.48 AML other m 2023-02-04T03:04:12.63
IV.CPTP.HHN. ML:1.6 0.0001234 0.78 AML other m 2023-02-04T03:04:15.48
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