Earthquake with magnitude of ML 1.6 on date 23-02-2020 and time 14:36:25 (Italy) in region 5 km SE Scillato (PA)

A magnitude ML 1.6 earthquake occured in region: 5 km SE Scillato (PA), on

  • 23-02-2020 13:36:25 (UTC)
  • 23-02-2020 14:36:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.83, 13.95 at 20 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Scillato PA 5 613 613
Polizzi Generosa PA 5 3407 4020
Caltavuturo PA 5 4017 8037
Sclafani Bagni PA 8 426 8463
Castellana Sicula PA 10 3411 11874
Collesano PA 10 4054 15928
Petralia Sottana PA 13 2821 18749
Isnello PA 14 1589 20338
Valledolmo PA 14 3594 23932
Cerda PA 14 5330 29262
Blufi PA 14 1029 30291
Petralia Soprana PA 15 3360 33651
Aliminusa PA 15 1236 34887
Gratteri PA 15 963 35850
Bompietro PA 16 1401 37251
Montemaggiore Belsito PA 16 3365 40616
Castelbuono PA 17 8943 49559
Resuttano CL 18 2038 51597
Geraci Siculo PA 18 1945 53542
Sciara PA 19 2822 56364
Campofelice di Roccella PA 19 7537 63901
Lascari PA 19 3588 67489
Vallelunga Pratameno CL 20 3461 70950

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km N of Caltanissetta (63360 inhabitants)
47 Km SE of Bagheria (55387 inhabitants)
60 Km SE of Palermo (674435 inhabitants)
66 Km NE of Agrigento (59770 inhabitants)
89 Km N of Gela (75827 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.6 2020-02-23
13:36:25
37.83 13.95 20 2020-02-23
13:49:29
Sala Sismica INGV-Roma 76753911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-23 13:36:25 ± 0.32
Latitude 37.83 ± 0.01
Longitude 13.95 ± 0.01
Depth (km) 20 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76753911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1272
Semi-minor axis of confidence ellipse (meter) 722
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 337
Circular confidence region, given by single value of horizontal uncertainty (meter) 1270
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41818
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 76753911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-23 13:49:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EMCN.HNZ. 2020-02-23T13:36:57.72 3.0 undecidable manual Sn -0.01 0
IV.PLLN.EHZ. 2020-02-23T13:36:35.51 0.6 undecidable manual S 44 0.2221 120 0.55 45
IV.RESU.HHZ. 2020-02-23T13:36:35.03 0.3 undecidable manual S 155 0.2032 123 0.55 65
IV.SOLUN.HHE. 2020-02-23T13:36:34.15 0.1 undecidable manual P 309 0.4182 104 0.15 93
IV.GIB.HHZ. 2020-02-23T13:36:34.18 0.3 undecidable manual S 21 0.17 129 0.5 69
IV.ALJA.HHZ. 2020-02-23T13:36:33.92 0.1 undecidable manual S 242 0.1745 128 0.13 97
IV.PETRA.HHZ. 2020-02-23T13:36:32.52 0.1 undecidable manual S 89 0.1313 137 -0.32 95
IV.RESU.HHZ. 2020-02-23T13:36:31.04 0.6 negative manual P 155 0.2032 123 0.45 45
IV.GIB.HHZ. 2020-02-23T13:36:30.16 0.1 undecidable manual P 21 0.17 129 0.04 100
IV.PLLN.EHZ. 2020-02-23T13:36:30.92 0.1 undecidable manual P 44 0.2221 120 0.06 99
IV.ALJA.HHZ. 2020-02-23T13:36:29.89 0.1 undecidable manual P 242 0.1745 128 -0.29 96
IV.CSLB.HHZ. 2020-02-23T13:36:29.22 0.1 undecidable manual P 39 0.1367 136 -0.48 92
IV.PETRA.HHZ. 2020-02-23T13:36:29.15 0.1 undecidable manual P 89 0.1313 137 -0.49 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GIB.HHN. ML:1.7 0.0003145 1.64 AML other m 2020-02-23T13:36:34.86
IV.GIB.HHE. ML:1.5 0.000202 0.34 AML other m 2020-02-23T13:36:35.61
IV.PETRA.HHE. ML:1.8 0.0004075 0.54 AML other m 2020-02-23T13:36:35.35
IV.RESU.HHN. ML:1.6 0.0002025 0.32 AML other m 2020-02-23T13:36:36.29
IV.RESU.HHE. ML:1.6 0.0001845 0.56 AML other m 2020-02-23T13:36:37.06
IV.PETRA.HHN. ML:1.7 0.000362 0.38 AML other m 2020-02-23T13:36:38.23
IV.ALJA.HHN. ML:1.4 0.00015588885 0.4352 AML other m 2020-02-23T13:36:36.55
IV.PLLN.EHN. ML:1.5 0.0001656778 0.4992 AML other m 2020-02-23T13:36:40.42
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download