Earthquake with magnitude of ML 1.5 on date 20-02-2020 and time 21:04:51 (Italy) in region 4 km W Polizzi Generosa (PA)

A magnitude ML 1.5 earthquake occured in region: 4 km W Polizzi Generosa (PA), on

  • 20-02-2020 20:04:51 (UTC)
  • 20-02-2020 21:04:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.83, 13.96 at 10 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 4 3407 3407
Scillato PA 5 613 4020
Caltavuturo PA 6 4017 8037
Sclafani Bagni PA 9 426 8463
Castellana Sicula PA 9 3411 11874
Collesano PA 10 4054 15928
Petralia Sottana PA 12 2821 18749
Isnello PA 13 1589 20338
Blufi PA 14 1029 21367
Petralia Soprana PA 14 3360 24727
Valledolmo PA 15 3594 28321
Cerda PA 15 5330 33651
Gratteri PA 15 963 34614
Bompietro PA 16 1401 36015
Aliminusa PA 16 1236 37251
Castelbuono PA 16 8943 46194
Montemaggiore Belsito PA 17 3365 49559
Geraci Siculo PA 18 1945 51504
Resuttano CL 18 2038 53542
Lascari PA 19 3588 57130
Campofelice di Roccella PA 19 7537 64667
Sciara PA 20 2822 67489
Vallelunga Pratameno CL 20 3461 70950

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km N of Caltanissetta (63360 inhabitants)
48 Km SE of Bagheria (55387 inhabitants)
61 Km SE of Palermo (674435 inhabitants)
67 Km NE of Agrigento (59770 inhabitants)
89 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 1.5 2020-02-20
20:04:51
37.83 13.96 10 2020-07-18
21:08:28
Bollettino Sismico Italiano INGV 77539071
Reviewed
Rev100
ML 1.5 2020-02-20
20:04:51
37.81 13.96 9 2020-02-20
20:16:42
Sala Sismica INGV-Roma 76680751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-20 20:04:51 ± 0.16
Latitude 37.83 ± 0.01
Longitude 13.96 ± 0.01
Depth (km) 10 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77539071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 881
Semi-minor axis of confidence ellipse (meter) 800
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 324
Circular confidence region, given by single value of horizontal uncertainty (meter) 880
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 15
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.12411
Epicentral distance of station farthest from the epicenter (degree) 0.51981
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 77539071
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-24 17:54:38

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 76680751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-20 20:16:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CORL.HHE. 2020-02-20T20:05:02.72 0.3 undecidable manual P 277 0.5198 50 0.61 63
IV.PLLN.EHZ. 2020-02-20T20:05:01.20 0.3 undecidable manual S 42 0.2176 50 0.44 70
IV.ALJA.HHZ. 2020-02-20T20:05:00.10 0.6 undecidable manual S 243 0.1808 117 0.54 44
IV.RESU.HHZ. 2020-02-20T20:05:00.67 0.6 undecidable manual S 157 0.1996 115 0.45 46
IV.CMDO.HHZ. 2020-02-20T20:05:00.07 0.6 undecidable manual P 196 0.3822 50 0.32 46
IV.SOLUN.HHZ. 2020-02-20T20:04:59.95 0.6 undecidable manual P 308 0.4245 50 -0.52 42
IV.GIB.HHZ. 2020-02-20T20:04:59.57 0.6 undecidable manual S 19 0.1682 119 0.45 46
IV.CSLB.HHZ. 2020-02-20T20:04:58.60 0.6 undecidable manual S 37 0.1322 125 0.64 43
IV.PETRA.HHZ. 2020-02-20T20:04:57.70 0.3 undecidable manual S 89 0.1241 127 0.01 76
IV.PLLN.EHZ. 2020-02-20T20:04:56.70 0.3 undecidable manual P 42 0.2176 50 -0.24 71
IV.RESU.HHZ. 2020-02-20T20:04:56.56 0.3 undecidable manual P 157 0.1996 115 -0.06 75
IV.GIB.HHZ. 2020-02-20T20:04:55.89 0.1 positive manual P 19 0.1682 119 -0.1 100
IV.ALJA.HHZ. 2020-02-20T20:04:55.73 0.1 undecidable manual P 243 0.1808 117 -0.51 91
IV.CSLB.HHZ. 2020-02-20T20:04:54.88 0.1 positive manual P 37 0.1322 125 -0.44 94
IV.PETRA.HHZ. 2020-02-20T20:04:54.86 0.1 positive manual P 89 0.1241 127 -0.31 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHE. ML:1.7 0.0005735 0.64 AML other m 2020-02-20T20:05:01.42
IV.GIB.HHN. ML:1.7 0.000431 0.5 AML other m 2020-02-20T20:05:00.76
IV.PETRA.HHN. ML:1.7 0.000506 0.96 AML other m 2020-02-20T20:05:01.63
IV.RESU.HHN. ML:1.4 0.00018 0.64 AML other m 2020-02-20T20:05:02.53
IV.CSLB.HHN. ML:1.1 0.0001262587 0.6656 AML other m 2020-02-20T20:04:59.49
IV.ALJA.HHN. ML:1.6 0.0002654943 0.2304 AML other m 2020-02-20T20:05:00.98
IV.GIB.HHE. ML:1.6 0.0003196204 0.2944 AML other m 2020-02-20T20:05:02.36
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