Earthquake with magnitude of ML 1.0 on date 13-10-2020 and time 16:21:47 (UTC) in region 3 km S Norcia (PG)

A magnitude ML 1.0 earthquake occured in region: 3 km S Norcia (PG), on

  • 13-10-2020 16:21:47 (UTC)
  • 13-10-2020 18:21:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.76, 13.1 at 11 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
Norcia PG 3 4957 4957
Cascia PG 9 3217 8174
Preci PG 14 724 8898
Accumoli RI 14 667 9565
Poggiodomo PG 15 117 9682
Castelsantangelo sul Nera MC 15 281 9963
Arquata del Tronto AP 16 1178 11141
Cerreto di Spoleto PG 16 1075 12216
Cittareale RI 17 482 12698
Monteleone di Spoleto PG 18 599 13297
Visso MC 19 1107 14404
Vallo di Nera PG 20 364 14768
Sellano PG 20 1079 15847

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SE of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
97 Km W of Pescara (121014 inhabitants)
99 Km W of Chieti (51815 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 1.0 2020-10-13
16:21:47
42.76 13.1 11 2020-10-13
16:26:08
Sala Sismica INGV-Roma 83758531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-13 16:21:47 ± 0.04
Latitude 42.76 ± 0.00
Longitude 13.10 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83758531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 430
Semi-minor axis of confidence ellipse (meter) 86
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 288
Circular confidence region, given by single value of horizontal uncertainty (meter) 430
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2716
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 83758531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-13 16:26:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VIVA.HHZ. 2020-10-13T16:22:05.37 3.0 undecidable manual P -0.07 0
IV.FAGN.HHZ. 2020-10-13T16:22:00.59 3.0 negative manual P 0.4 0
IV.RM33.EHZ. 2020-10-13T16:21:58.14 0.6 undecidable manual S 162 0.268 50 0.09 49
IV.FDMO.HHZ. 2020-10-13T16:21:58.05 0.6 undecidable manual S 358 0.2716 50 -0.1 47
IV.LNSS.HHZ. 2020-10-13T16:21:55.09 0.6 undecidable manual S 196 0.1682 50 0.01 50
IV.GAVE.EHZ. 2020-10-13T16:21:55.24 0.3 undecidable manual S 245 0.17 50 0.11 75
IV.MC2.EHZ. 2020-10-13T16:21:54.97 0.6 undecidable manual S 23 0.1592 50 0.14 49
IV.RM33.EHZ. 2020-10-13T16:21:53.56 0.6 positive manual P 162 0.268 50 -0.09 48
IV.FDMO.HHZ. 2020-10-13T16:21:53.73 1.0 negative manual P 358 0.2716 50 0.02 24
IV.GAVE.EHZ. 2020-10-13T16:21:52.24 1.0 undecidable manual P 245 0.17 50 0.28 24
IV.NRCA.HHZ. 2020-10-13T16:21:52.19 0.3 undecidable manual S 7 0.0692 145 -0.12 76
IV.MC2.EHZ. 2020-10-13T16:21:51.95 0.6 positive manual P 23 0.1592 50 0.16 49
IV.LNSS.HHZ. 2020-10-13T16:21:51.95 0.1 undecidable manual P 196 0.1682 50 0.01 100
IV.NRCA.HHZ. 2020-10-13T16:21:50.40 0.6 undecidable manual P 7 0.0692 145 0.06 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1 0.00014816215 0.0768 AML other m 2020-10-13T16:21:52.37
IV.NRCA.HHN. ML:0.8 9.4198165E-5 0.1408 AML other m 2020-10-13T16:21:52.29
IV.NRCA.HNE. ML:1 0.00013443475 0.0768 AML other m 2020-10-13T16:21:52.33
IV.NRCA.HNN. ML:1 0.000121263275 0.576 AML other m 2020-10-13T16:21:57.08
IV.LNSS.HHE. ML:0.8 4.3522795E-5 0.1024 AML other m 2020-10-13T16:21:55.93
IV.LNSS.HHN. ML:0.7 3.3312935E-5 0.1408 AML other m 2020-10-13T16:21:55.59
IV.LNSS.HNE. ML:1.4 0.0001740308 0.8448 AML other m 2020-10-13T16:21:52.80
IV.LNSS.HNN. ML:1.2 0.000118619585 0.832 AML other m 2020-10-13T16:21:53.59
IV.GAVE.EHE. ML:0.6 3.23599E-5 0.1792 AML other m 2020-10-13T16:21:55.80
IV.GAVE.EHN. ML:0.6 2.7546125E-5 0.1152 AML other m 2020-10-13T16:21:55.57
IV.GAVE.HNE. ML:1.2 0.0001103367125 0.896 AML other m 2020-10-13T16:22:03.27
IV.GAVE.HNN. ML:1.5 0.0002451539 0.8576 AML other m 2020-10-13T16:22:04.59
IV.RM33.EHE. ML:0.6 2.2444147E-5 0.9216 AML other m 2020-10-13T16:22:02.14
IV.RM33.EHN. ML:0.5 1.34688035E-5 0.768 AML other m 2020-10-13T16:22:07.14
IV.RM33.HNE. ML:1.5 0.00014113543 0.6528 AML other m 2020-10-13T16:22:07.32
IV.RM33.HNN. ML:1.5 0.00015807455 0.5376 AML other m 2020-10-13T16:21:58.16
IV.FDMO.HHE. ML:0.5 1.46536535E-5 0.2304 AML other m 2020-10-13T16:21:58.24
IV.FDMO.HHN. ML:0.5 1.28622925E-5 0.2944 AML other m 2020-10-13T16:21:58.23
IV.FAGN.HHE. ML:1.2 3.117242E-5 0.5248 AML other m 2020-10-13T16:22:15.72
IV.FAGN.HHN. ML:1.2 2.439448E-5 0.4608 AML other m 2020-10-13T16:22:08.47
IV.VIVA.HHE. ML:3.3 0.0015601865 0.064 AML other m 2020-10-13T16:22:12.78
IV.VIVA.HHN. ML:3.1 0.00101611135 0.064 AML other m 2020-10-13T16:22:11.15
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download