Earthquake with magnitude of ML 1.7 on date 20-02-2020 and time 02:42:07 (Italy) in region 3 km W Polizzi Generosa (PA)

A magnitude ML 1.7 earthquake occured in region: 3 km W Polizzi Generosa (PA), on

  • 20-02-2020 01:42:07 (UTC)
  • 20-02-2020 02:42:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.83, 13.96 at 12 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
Polizzi Generosa PA 3 3407 3407
Scillato PA 6 613 4020
Caltavuturo PA 7 4017 8037
Castellana Sicula PA 9 3411 11448
Sclafani Bagni PA 10 426 11874
Collesano PA 11 4054 15928
Petralia Sottana PA 12 2821 18749
Blufi PA 13 1029 19778
Petralia Soprana PA 13 3360 23138
Isnello PA 14 1589 24727
Bompietro PA 15 1401 26128
Valledolmo PA 15 3594 29722
Cerda PA 16 5330 35052
Gratteri PA 16 963 36015
Castelbuono PA 16 8943 44958
Aliminusa PA 17 1236 46194
Geraci Siculo PA 17 1945 48139
Resuttano CL 17 2038 50177
Montemaggiore Belsito PA 18 3365 53542
Lascari PA 19 3588 57130
Campofelice di Roccella PA 20 7537 64667
Alimena PA 20 2032 66699
Vallelunga Pratameno CL 20 3461 70160

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km N of Caltanissetta (63360 inhabitants)
49 Km SE of Bagheria (55387 inhabitants)
62 Km SE of Palermo (674435 inhabitants)
66 Km NE of Agrigento (59770 inhabitants)
88 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
ML 1.7 2020-02-20
01:42:07
37.83 13.96 12 2020-07-18
21:08:26
Bollettino Sismico Italiano INGV 77355341
Reviewed
Rev100
ML 1.8 2020-02-20
01:42:06
37.81 13.98 23 2020-02-20
01:50:26
Sala Sismica INGV-Roma 76660101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-20 01:42:07 ± 0.18
Latitude 37.83 ± 0.01
Longitude 13.96 ± 0.01
Depth (km) 12 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77355341

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 913
Semi-minor axis of confidence ellipse (meter) 666
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 308
Circular confidence region, given by single value of horizontal uncertainty (meter) 910
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.11871
Epicentral distance of station farthest from the epicenter (degree) 0.43078
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 77355341
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-07 21:53:35

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 76660101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-20 01:50:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLLN.EHZ. 2020-02-20T01:42:16.86 0.6 undecidable manual S 40 0.2167 92 0.61 40
IV.SOLUN.HHE. 2020-02-20T01:42:16.34 0.3 undecidable manual P 308 0.4308 91 0.18 67
IV.ALJA.HHZ. 2020-02-20T01:42:15.92 0.6 undecidable manual S 245 0.1844 93 0.64 41
IV.GIB.HHZ. 2020-02-20T01:42:15.22 0.6 undecidable manual S 17 0.17 94 0.36 45
IV.RESU.HHZ. 2020-02-20T01:42:15.98 0.6 undecidable manual S 158 0.1943 93 0.39 45
IV.CMDO.HHZ. 2020-02-20T01:42:14.42 0.6 undecidable manual P 197 0.3804 91 -0.87 39
IV.CSLB.HHZ. 2020-02-20T01:42:13.31 0.3 undecidable manual S 34 0.1322 102 -0.45 71
IV.PETRA.HHE. 2020-02-20T01:42:13.48 0.3 undecidable manual S 87 0.1187 108 0.11 72
IV.RESU.HHZ. 2020-02-20T01:42:12.34 0.3 undecidable manual P 158 0.1943 93 0.23 70
IV.PLLN.EHZ. 2020-02-20T01:42:12.57 0.3 undecidable manual P 40 0.2167 92 0.07 71
IV.ALJA.HHZ. 2020-02-20T01:42:11.49 0.3 undecidable manual P 245 0.1844 93 -0.44 70
IV.GIB.HHZ. 2020-02-20T01:42:11.78 0.3 undecidable manual P 17 0.17 94 0.09 72
IV.PETRA.HHE. 2020-02-20T01:42:10.77 0.1 undecidable manual P 87 0.1187 108 -0.06 100
IV.CSLB.HHZ. 2020-02-20T01:42:10.70 0.1 positive manual P 34 0.1322 102 -0.36 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSLB.HHN. ML:1.4 0.000241154 0.26 AML other m 2020-02-20T01:42:16.28
IV.GIB.HHN. ML:1.9 0.000669592 0.5 AML other m 2020-02-20T01:42:16.55
IV.ALJA.HHN. ML:1.8 0.00044035555 0.24 AML other m 2020-02-20T01:42:16.76
IV.CSLB.HHE. ML:1.4 0.0002356578 0.26 AML other m 2020-02-20T01:42:17.18
IV.GIB.HHE. ML:1.8 0.0004233217 1.6 AML other m 2020-02-20T01:42:17.18
IV.RESU.HHN. ML:1.6 0.0002755739 0.72 AML other m 2020-02-20T01:42:19.13
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