Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 17-11-2020 and time 18:10:47 (Italy) in region 2 km S Monteleone di Spoleto (PG)

A magnitude ML 1.9 earthquake occured in region: 2 km S Monteleone di Spoleto (PG), on

  • 17-11-2020 17:10:47 (UTC)
  • 17-11-2020 18:10:47 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.64, 12.95 at 9 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Monteleone di Spoleto PG 2 599 599
Leonessa RI 8 2435 3034
Poggiodomo PG 9 117 3151
Polino TR 10 233 3384
Cascia PG 11 3217 6601
Scheggino PG 13 461 7062
Ferentillo TR 13 1913 8975
Sant'Anatolia di Narco PG 14 564 9539
Rivodutri RI 15 1253 10792
Morro Reatino RI 15 373 11165
Poggio Bustone RI 16 2055 13220
Montefranco TR 16 1276 14496
Arrone TR 16 2763 17259
Vallo di Nera PG 17 364 17623
Labro RI 17 374 17997
Posta RI 17 694 18691
Cittareale RI 17 482 19173
Cantalice RI 19 2755 21928

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km E of Terni (111501 inhabitants)
41 Km SE of Foligno (57155 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
62 Km W of Teramo (54892 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
73 Km N of Guidonia Montecelio (88673 inhabitants)
73 Km E of Viterbo (67173 inhabitants)
76 Km N of Tivoli (56533 inhabitants)
91 Km NE of Roma (2864731 inhabitants)
99 Km W of Montesilvano (53738 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 1.9 2020-11-17
17:10:47		 42.63 12.95 9 2020-11-17
17:33:37		 Sala Sismica INGV-Roma 84805161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-17 17:10:47 ± 0.12
Latitude 42.63 ± 0.01
Longitude 12.95 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84805161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 990
Semi-minor axis of confidence ellipse (meter) 648
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 190
Circular confidence region, given by single value of horizontal uncertainty (meter) 990
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 132
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 17
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
Epicentral distance of station farthest from the epicenter (degree) 0.49283
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.5
Num. used stations 6
Type of magnitude ML
Reference to an origin 84805161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-17 17:33:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SALB.HHZ. 2020-11-17T17:12:40.86 3.0 undecidable manual Sg 7.59 0
IV.MAGA.HHZ. 2020-11-17T17:12:36.07 3.0 undecidable manual Sg 9.27 0
IV.CRND.HNZ. 2020-11-17T17:12:16.93 3.0 undecidable manual Sn -2.66 0
XK.GIZZ.HHZ. 2020-11-17T17:12:07.03 3.0 positive manual Pg 11.04 0
IV.MCRV.HHZ. 2020-11-17T17:12:07.08 3.0 undecidable manual Sg 4.93 0
XK.ALB1.HNZ. 2020-11-17T17:12:01.48 3.0 undecidable manual Pn 3.65 0
IV.TDS.HHZ. 2020-11-17T17:12:00.18 3.0 undecidable manual Pg 10.97 0
IV.IFOR.HHZ. 2020-11-17T17:11:53.86 3.0 undecidable manual Sg 2.25 0
IV.PAOL.HHZ. 2020-11-17T17:11:47.53 3.0 undecidable manual Sn -3.02 0
GU.RNCA.HHZ. 2020-11-17T17:11:41.81 3.0 positive manual Pn -0.29 0
IV.RIBO.EHZ.01 2020-11-17T17:11:13.89 3.0 positive manual P -1 0
IV.RMP.HHZ. 2020-11-17T17:11:05.21 3.0 negative manual P -1.1 0
IV.ASSB.HHZ. 2020-11-17T17:11:03.76 0.1 undecidable manual S 332 0.4605 50 -0.08 93
IV.VIVA.HHZ. 2020-11-17T17:11:03.67 3.0 negative manual P -3.59 0
IV.FDMO.HHZ. 2020-11-17T17:11:02.53 0.1 undecidable manual S 14 0.4137 50 0.07 94
IV.MMO1.EHZ. 2020-11-17T17:11:01.79 0.3 undecidable manual S 46 0.3822 50 0.26 68
IV.CESI.HHZ. 2020-11-17T17:11:01.25 0.3 undecidable manual S 355 0.3714 50 0.04 71
IV.SMA1.EHZ. 2020-11-17T17:10:58.47 0.3 undecidable manual S 91 0.2833 50 -0.12 71
IV.CESX.HHZ. 2020-11-17T17:10:57.56 0.6 undecidable manual S 264 0.2689 50 -0.61 42
IV.CSP1.EHZ. 2020-11-17T17:10:57.44 0.1 undecidable manual P 22 0.4928 50 0 93
IV.FDMO.HHZ. 2020-11-17T17:10:56.02 0.6 positive manual P 14 0.4137 50 -0.06 47
IV.ASSB.HHZ. 2020-11-17T17:10:56.67 0.1 undecidable manual P 332 0.4605 50 -0.2 90
IV.MMO1.EHZ. 2020-11-17T17:10:55.39 0.1 undecidable manual P 46 0.3822 50 -0.15 93
IV.CESX.HHZ. 2020-11-17T17:10:55.11 0.3 undecidable manual P 264 0.2689 50 1.51 41
IV.CESI.HHZ. 2020-11-17T17:10:55.26 0.1 undecidable manual P 355 0.3714 50 -0.09 94
IV.SMA1.EHZ. 2020-11-17T17:10:53.82 0.1 undecidable manual P 91 0.2833 50 -0.02 97
IV.MC2.EHZ. 2020-11-17T17:10:52.41 3.0 undecidable manual P -1.31 0
IV.LNSS.HHZ. 2020-11-17T17:10:51.51 0.6 undecidable manual S 116 0.0737 139 -0.14 49
IV.ARRO.EHZ. 2020-11-17T17:10:50.97 0.3 positive manual P 248 0.1466 120 -0.15 73
IV.LNSS.HHZ. 2020-11-17T17:10:49.91 0.1 negative manual P 116 0.0737 139 0.08 100
IV.GAVE.EHZ. 2020-11-17T17:10:49.87 0.3 undecidable manual P 324 0.071 140 0.08 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHN. ML:1.8 0.001041 0.38 AML other m 2020-11-17T17:10:51.90
IV.LNSS.HHE. ML:1.9 0.001305 0.64 AML other m 2020-11-17T17:10:52.13
IV.ARRO.EHE. ML:1.3 0.000171 0.34 AML other m 2020-11-17T17:10:53.76
IV.ARRO.EHN. ML:1.2 0.0001415 0.58 AML other m 2020-11-17T17:10:55.90
GU.RNCA.HHE. ML:2.6 2.48E-5 0.5 AML other m 2020-11-17T17:11:48.27
GU.RNCA.HHN. ML:2.6 2.505E-5 0.5 AML other m 2020-11-17T17:12:16.30
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