Earthquake with magnitude of ML 1.7 on date 17-11-2020 and time 21:09:44 (Italy) in region 3 km NW Geraci Siculo (PA)

A magnitude ML 1.7 earthquake occured in region: 3 km NW Geraci Siculo (PA), on

  • 17-11-2020 20:09:44 (UTC)
  • 17-11-2020 21:09:44 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.88, 14.14 at 10 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 3 1945 1945
San Mauro Castelverde PA 6 1701 3646
Castelbuono PA 7 8943 12589
Petralia Sottana PA 9 2821 15410
Petralia Soprana PA 10 3360 18770
Gangi PA 11 6811 25581
Pollina PA 13 2974 28555
Isnello PA 14 1589 30144
Castellana Sicula PA 14 3411 33555
Tusa ME 14 2925 36480
Polizzi Generosa PA 15 3407 39887
Castel di Lucio ME 15 1294 41181
Bompietro PA 15 1401 42582
Blufi PA 15 1029 43611
Pettineo ME 16 1350 44961
Gratteri PA 18 963 45924
Motta d'Affermo ME 18 739 46663
Collesano PA 18 4054 50717

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km N of Caltanissetta (63360 inhabitants)
59 Km E of Bagheria (55387 inhabitants)
73 Km E of Palermo (674435 inhabitants)
80 Km NE of Agrigento (59770 inhabitants)
91 Km N of Gela (75827 inhabitants)
93 Km W of Catania (314555 inhabitants)
95 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
Reviewed
Rev100
ML 1.7 2020-11-17
20:09:44
37.88 14.14 10 2020-11-17
20:16:40
Sala Sismica INGV-Roma 84806101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-17 20:09:44 ± 0.14
Latitude 37.88 ± 0.01
Longitude 14.14 ± 0.02
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84806101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1552
Semi-minor axis of confidence ellipse (meter) 864
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 274
Circular confidence region, given by single value of horizontal uncertainty (meter) 1550
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.59895
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 84806101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-17 20:16:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MUCR.HHE. 2020-11-17T20:10:05.90 0.6 undecidable manual S 74 0.5989 50 0.45 41
IV.MTGR.HHZ. 2020-11-17T20:10:02.56 3.0 undecidable manual P -5.38 0
IV.IFIL.HHZ. 2020-11-17T20:09:59.98 3.0 positive manual P 0.98 0
IV.IACL.HHZ. 2020-11-17T20:09:58.94 3.0 positive manual P 1.08 0
IV.MUCR.HHE. 2020-11-17T20:09:56.46 0.1 undecidable manual P 74 0.5989 50 -0.34 84
IV.SOLUN.HHZ. 2020-11-17T20:09:55.55 3.0 positive manual P -2.19 0
IV.GALF.HHZ. 2020-11-17T20:09:53.40 0.1 undecidable manual P 117 0.3777 50 0.39 87
IV.MSFR.HHZ. 2020-11-17T20:09:52.55 0.1 undecidable manual P 67 0.3858 50 -0.6 81
IV.SCIAR.HHZ. 2020-11-17T20:09:51.72 3.0 positive manual Pg -1.71 0
IV.RESU.HHZ. 2020-11-17T20:09:51.22 0.3 undecidable manual P 196 0.2455 50 0.47 66
IV.PLLN.EHZ. 2020-11-17T20:09:50.90 0.1 undecidable manual S 1 0.1097 129 0.47 90
IV.CSLB.HHZ. 2020-11-17T20:09:49.76 0.1 undecidable manual S 310 0.0854 136 0.01 99
IV.PLLN.EHZ. 2020-11-17T20:09:48.08 0.1 positive manual P 1 0.1097 129 -0.05 98
IV.PETRA.HHZ. 2020-11-17T20:09:48.99 0.1 undecidable manual S 203 0.054 149 -0.01 100
IV.GIB.HHZ. 2020-11-17T20:09:48.61 0.1 undecidable manual P 320 0.1403 122 -0.08 97
IV.PETRA.HHZ. 2020-11-17T20:09:47.13 0.1 negative manual P 203 0.054 149 -0.17 97
IV.CSLB.HHZ. 2020-11-17T20:09:47.57 0.1 negative manual P 310 0.0854 136 -0.16 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHN. ML:1.9 0.00133 0.56 AML other m 2020-11-17T20:09:49.25
IV.PETRA.HHE. ML:1.7 0.000756 0.26 AML other m 2020-11-17T20:09:49.72
IV.CSLB.HHE. ML:1.6 0.0004735 1.4 AML other m 2020-11-17T20:09:49.88
IV.CSLB.HHN. ML:1.4 0.0003705 1.22 AML other m 2020-11-17T20:09:50.25
IV.PLLN.EHN. ML:2.2 0.0018 1.54 AML other m 2020-11-17T20:09:52.82
IV.PLLN.EHE. ML:2.1 0.00143 0.44 AML other m 2020-11-17T20:09:53.37
IV.GIB.HHN. ML:1.7 0.0004895 0.32 AML other m 2020-11-17T20:09:54.62
IV.GIB.HHE. ML:1.6 0.0003735 1.18 AML other m 2020-11-17T20:09:57.74
IV.RESU.HHN. ML:1.6 0.0002395 0.68 AML other m 2020-11-17T20:09:58.96
IV.RESU.HHE. ML:1.5 0.0001825 0.5 AML other m 2020-11-17T20:09:58.72
IV.SCIAR.HHN. ML:1.4 0.0001135 1.28 AML other m 2020-11-17T20:10:01.85
IV.SCIAR.HHE. ML:1.4 9.21E-5 1.16 AML other m 2020-11-17T20:10:02.58
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