Earthquake with magnitude of ML 1.0 on date 24-02-2020 and time 11:44:14 (Italy) in region 3 km S Polizzi Generosa (PA)

A magnitude ML 1.0 earthquake occured in region: 3 km S Polizzi Generosa (PA), on

  • 24-02-2020 10:44:14 (UTC)
  • 24-02-2020 11:44:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.79, 14.01 at 16 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
Polizzi Generosa PA 3 3407 3407
Castellana Sicula PA 4 3411 6818
Blufi PA 7 1029 7847
Petralia Sottana PA 8 2821 10668
Petralia Soprana PA 9 3360 14028
Bompietro PA 9 1401 15429
Caltavuturo PA 11 4017 19446
Scillato PA 12 613 20059
Resuttano CL 12 2038 22097
Sclafani Bagni PA 14 426 22523
Alimena PA 14 2032 24555
Geraci Siculo PA 15 1945 26500
Collesano PA 16 4054 30554
Valledolmo PA 16 3594 34148
Isnello PA 18 1589 35737
Gangi PA 18 6811 42548
Castelbuono PA 18 8943 51491
Vallelunga Pratameno CL 19 3461 54952

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km N of Caltanissetta (63360 inhabitants)
54 Km SE of Bagheria (55387 inhabitants)
65 Km NE of Agrigento (59770 inhabitants)
67 Km SE of Palermo (674435 inhabitants)
83 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 1.0 2020-02-24
10:44:14
37.79 14.01 16 2020-02-24
10:54:25
Sala Sismica INGV-Roma 76770541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-24 10:44:14 ± 0.33
Latitude 37.79 ± 0.02
Longitude 14.01 ± 0.04
Depth (km) 16 ± 5 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 76770541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3110
Semi-minor axis of confidence ellipse (meter) 2105
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 3110
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 197
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 6
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.20325
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 76770541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-24 10:54:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ACATE.EHZ. 2020-02-24T10:44:23.27 3.0 undecidable manual P 0
IV.CSLB.HHZ. 2020-02-24T10:44:21.54 0.3 undecidable manual S 15 0.1556 121 -0.01 75
IV.PETRA.HHZ. 2020-02-24T10:44:20.37 0.6 undecidable manual S 62 0.0971 138 0.15 49
IV.ALJA.HHZ. 2020-02-24T10:44:19.15 0.1 undecidable manual P 259 0.2032 112 0.03 100
IV.CLTA.HHZ. 2020-02-24T10:44:19.14 3.0 undecidable manual P 0
IV.GIB.HHZ. 2020-02-24T10:44:19.30 0.1 undecidable manual P 4 0.2032 112 0.18 97
IV.CSLB.HHZ. 2020-02-24T10:44:18.15 0.6 positive manual P 15 0.1556 121 -0.24 48
IV.PETRA.HHZ. 2020-02-24T10:44:17.46 0.3 undecidable manual P 62 0.0971 138 -0.17 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHN. ML:1.2 0.0001405 0.98 AML other m 2020-02-24T10:44:27.17
IV.CSLB.HHN. ML:0.8 4.51E-5 1.84 AML other m 2020-02-24T10:44:22.94
IV.PETRA.HHE. ML:1.2 0.00013986515 0.576 AML other m 2020-02-24T10:44:24.39
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