Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 16-02-2020 and time 22:29:55 (Italy) in region 4 km E Scillato (PA)

A magnitude ML 1.4 earthquake occured in region: 4 km E Scillato (PA), on

  • 16-02-2020 21:29:55 (UTC)
  • 16-02-2020 22:29:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.8480, 13.9480 at 11 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
Scillato PA 4 613 613
Caltavuturo PA 6 4017 4630
Polizzi Generosa PA 6 3407 8037
Collesano PA 8 4054 12091
Sclafani Bagni PA 9 426 12517
Castellana Sicula PA 11 3411 15928
Isnello PA 12 1589 17517
Cerda PA 13 5330 22847
Gratteri PA 14 963 23810
Petralia Sottana PA 14 2821 26631
Aliminusa PA 15 1236 27867
Petralia Soprana PA 15 3360 31227
Valledolmo PA 15 3594 34821
Blufi PA 16 1029 35850
Castelbuono PA 16 8943 44793
Montemaggiore Belsito PA 16 3365 48158
Campofelice di Roccella PA 17 7537 55695
Lascari PA 17 3588 59283
Bompietro PA 17 1401 60684
Sciara PA 18 2822 63506
Geraci Siculo PA 18 1945 65451
Resuttano CL 20 2038 67489

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km N of Caltanissetta (63360 inhabitants)
46 Km SE of Bagheria (55387 inhabitants)
59 Km SE of Palermo (674435 inhabitants)
68 Km NE of Agrigento (59770 inhabitants)
91 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 1.4 2020-02-16
21:29:55		 37.8478 13.9475 11 2020-07-18
21:08:32		 Bollettino Sismico Italiano INGV 78194241
Reviewed
Rev100 		ML 1.5 2020-02-16
21:29:54		 37.8497 13.9502 14 2020-02-16
21:33:55		 Sala Sismica INGV-Roma 76575901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-16 21:29:55 ± 0.22
Latitude 37.8478 ± 0.0135
Longitude 13.9475 ± 0.0137
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78194241

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1531
Semi-minor axis of confidence ellipse (meter) 870
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 335
Circular confidence region, given by single value of horizontal uncertainty (meter) 1530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 167
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.12501
Epicentral distance of station farthest from the epicenter (degree) 0.21854
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 78194241
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-14 12:26:46

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 76575901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-16 21:33:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.RESU.HHZ. 2020-02-16T21:30:04.51 0.6 undecidable manual S 157 24.2535 50 0.46 48
IV.PLLN.EHZ. 2020-02-16T21:30:04.71 0.6 undecidable manual S 47 23.4543 50 0.88 42
IV.ALJA.HHZ. 2020-02-16T21:30:03.57 0.6 undecidable manual S 237 20.2686 118 0.62 44
IV.CSLB.HHZ. 2020-02-16T21:30:01.01 0.6 undecidable manual S 44 13.875 128 -0.08 50
IV.PETRA.HHZ. 2020-02-16T21:30:01.40 0.3 undecidable manual S 96 14.7741 126 0.07 76
IV.PLLN.EHZ. 2020-02-16T21:30:00.07 0.1 undecidable manual P 47 23.4543 50 -0.03 96
IV.RESU.HHZ. 2020-02-16T21:30:00.03 0.1 undecidable manual P 157 24.2535 50 -0.2 93
IV.ALJA.HHZ. 2020-02-16T21:29:59.24 0.3 undecidable manual P 237 20.2686 118 -0.35 70
IV.PETRA.HHZ. 2020-02-16T21:29:58.36 0.1 positive manual P 96 14.7741 126 -0.3 94
IV.CSLB.HHZ. 2020-02-16T21:29:58.49 0.1 positive manual P 44 13.875 128 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHN. ML:1.6 0.00039749999999999996 0.66 AML other m 2020-02-16T21:30:03.35
IV.PETRA.HHE. ML:1.8 0.0005660000000000001 0.6 AML other m 2020-02-16T21:30:03.64
IV.CSLB.HHN. ML:1.1 0.00011949999999999999 0.6 AML other m 2020-02-16T21:30:03.75
IV.CSLB.HHE. ML:1.2 0.0001515 0.94 AML other m 2020-02-16T21:30:04.10
IV.RESU.HHN. ML:1.5 0.0001885 0.32 AML other m 2020-02-16T21:30:05.58
IV.RESU.HHE. ML:1.4 0.0001575 0.34 AML other m 2020-02-16T21:30:06.59
IV.PLLN.EHE. ML:1.3 0.000132 0.56 AML other m 2020-02-16T21:30:07.10
IV.PLLN.EHN. ML:1.4 0.00017649999999999998 0.98 AML other m 2020-02-16T21:30:09.34
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