Earthquake with magnitude of ML 1.3 on date 08-04-2020 and time 06:04:13 (Italy) in region 5 km W Geraci Siculo (PA)

A magnitude ML 1.3 earthquake occured in region: 5 km W Geraci Siculo (PA), on

  • 08-04-2020 04:04:13 (UTC)
  • 08-04-2020 06:04:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.86, 14.1 at 30 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
Geraci Siculo PA 5 1945 1945
Petralia Sottana PA 6 2821 4766
Petralia Soprana PA 7 3360 8126
Castelbuono PA 8 8943 17069
Castellana Sicula PA 10 3411 20480
Polizzi Generosa PA 10 3407 23887
San Mauro Castelverde PA 10 1701 25588
Gangi PA 12 6811 32399
Isnello PA 12 1589 33988
Blufi PA 12 1029 35017
Bompietro PA 13 1401 36418
Pollina PA 15 2974 39392
Collesano PA 15 4054 43446
Gratteri PA 16 963 44409
Scillato PA 17 613 45022
Tusa ME 19 2925 47947
Caltavuturo PA 19 4017 51964
Castel di Lucio ME 19 1294 53258
Alimena PA 19 2032 55290

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km N of Caltanissetta (63360 inhabitants)
57 Km E of Bagheria (55387 inhabitants)
70 Km E of Palermo (674435 inhabitants)
76 Km NE of Agrigento (59770 inhabitants)
90 Km N of Gela (75827 inhabitants)
96 Km W of Catania (314555 inhabitants)
98 Km W of Acireale (52622 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 1.3 2020-04-08
04:04:13
37.86 14.1 31 2020-04-08
04:57:53
Sala Sismica INGV-Roma 78005331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-08 04:04:13 ± 0.5
Latitude 37.86 ± 0.02
Longitude 14.10 ± 0.04
Depth (km) 31 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78005331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 3462
Semi-minor axis of confidence ellipse (meter) 1951
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
Circular confidence region, given by single value of horizontal uncertainty (meter) 3460
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 138
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.03327
Epicentral distance of station farthest from the epicenter (degree) 0.28419
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 78005331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-08 04:57:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLLN.EHZ. 2020-04-08T04:04:23.81 0.3 undecidable manual S 16 0.134 151 0.17 74
IV.GIB.HHZ. 2020-04-08T04:04:23.79 0.3 undecidable manual S 336 0.1385 151 0.09 75
IV.PETRA.HHZ. 2020-04-08T04:04:23.07 0.3 undecidable manual S 154 0.0333 172 0.37 73
IV.CSLB.HHZ. 2020-04-08T04:04:22.44 0.3 undecidable manual S 338 0.08 162 -0.56 68
IV.SCIAR.HHZ. 2020-04-08T04:04:21.26 0.3 undecidable manual P 286 0.2842 130 0.2 71
IV.PLLN.EHZ. 2020-04-08T04:04:19.62 0.6 undecidable manual P 16 0.134 151 0.22 49
IV.GIB.HHZ. 2020-04-08T04:04:19.62 0.6 undecidable manual P 336 0.1385 151 0.19 49
IV.CSLB.HHZ. 2020-04-08T04:04:18.81 0.1 negative manual P 338 0.08 162 -0.23 99
IV.PETRA.HHZ. 2020-04-08T04:04:18.66 0.1 negative manual P 154 0.0333 172 -0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSLB.HHE. ML:1.1 5.87E-5 0.24 AML other m 2020-04-08T04:04:22.47
IV.CSLB.HHN. ML:1.1 6.16E-5 0.38 AML other m 2020-04-08T04:04:22.48
IV.PETRA.HHE. ML:1.1 6.47E-5 0.48 AML other m 2020-04-08T04:04:23.32
IV.PETRA.HHN. ML:1.2 7.355E-5 0.46 AML other m 2020-04-08T04:04:23.63
IV.GIB.HHE. ML:1.5 0.00013355 1.02 AML other m 2020-04-08T04:04:24.07
IV.PLLN.EHE. ML:1.4 0.0001113 0.24 AML other m 2020-04-08T04:04:24.24
IV.PLLN.EHN. ML:1.6 0.000168 0.56 AML other m 2020-04-08T04:04:24.71
IV.GIB.HHN. ML:1.3 8.43E-5 1.02 AML other m 2020-04-08T04:04:25.27
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