Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 17-11-2020 and time 09:30:42 (Italy) in region 5 km E Montone (PG)

A magnitude ML 1.9 earthquake occured in region: 5 km E Montone (PG), on

  • 17-11-2020 08:30:42 (UTC)
  • 17-11-2020 09:30:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.38, 12.39 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Montone PG 5 1680 1680
Pietralunga PG 8 2111 3791
Umbertide PG 10 16681 20472
Città di Castello PG 15 39913 60385
Gubbio PG 16 32216 92601
Monte Santa Maria Tiberina PG 19 1183 93784
Apecchio PU 20 1882 95666

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km N of Perugia (166134 inhabitants)
42 Km E of Arezzo (99543 inhabitants)
54 Km NW of Foligno (57155 inhabitants)
72 Km SW of Fano (60888 inhabitants)
72 Km SW of Pesaro (94582 inhabitants)
77 Km S of Rimini (147750 inhabitants)
84 Km S of Cesena (96758 inhabitants)
86 Km E of Siena (53903 inhabitants)
94 Km N of Terni (111501 inhabitants)
95 Km W of Ancona (100861 inhabitants)
97 Km S of Forlì (117913 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
08:30:42		 43.39 12.39 9 2020-11-17
08:38:15		 Sala Sismica INGV-Roma 84797991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-17 08:30:42 ± 0.05
Latitude 43.39 ± 0.00
Longitude 12.39 ± 0.00
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84797991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 417
Semi-minor axis of confidence ellipse (meter) 330
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
Circular confidence region, given by single value of horizontal uncertainty (meter) 420
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.01439
Epicentral distance of station farthest from the epicenter (degree) 0.6637
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 22
Type of magnitude ML
Reference to an origin 84797991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-17 08:38:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-11-17T08:31:01.42 0.6 undecidable manual S 96 0.5225 50 0.87 36
IV.CSP1.EHZ. 2020-11-17T08:30:55.32 0.6 negative manual P 116 0.6637 50 0.1 44
IV.PARC.HHZ. 2020-11-17T08:30:53.63 0.3 undecidable manual S 338 0.2842 50 0.13 71
IV.CESI.HHZ. 2020-11-17T08:30:53.07 0.1 positive manual P 135 0.5351 50 0.04 92
IV.CAFI.HHZ. 2020-11-17T08:30:53.98 0.3 undecidable manual S 260 0.3112 50 -0.31 68
IV.ATCC.EHZ. 2020-11-17T08:30:53.23 0.3 undecidable manual S 137 0.2716 50 0.1 71
IV.FRON.EHZ. 2020-11-17T08:30:53.07 0.3 undecidable manual S 62 0.2788 50 -0.27 69
IV.NARO.HHZ. 2020-11-17T08:30:52.70 0.3 undecidable manual S 32 0.2653 50 -0.24 70
IV.EL6.EHZ. 2020-11-17T08:30:52.87 0.6 undecidable manual P 96 0.5225 50 0.06 46
IV.ARVD.HHZ. 2020-11-17T08:30:51.05 0.3 negative manual P 74 0.4182 50 0.03 70
IV.PE3.EHZ. 2020-11-17T08:30:50.00 0.6 positive manual P 14 0.3202 50 0.65 41
IV.APEC.HHZ. 2020-11-17T08:30:50.01 0.3 undecidable manual S 8 0.1745 116 0.32 70
IV.ASSB.HHZ. 2020-11-17T08:30:50.23 0.6 positive manual P 150 0.3957 50 -0.41 44
IV.MURB.HHZ. 2020-11-17T08:30:49.22 0.3 undecidable manual S 141 0.1583 118 0.11 73
IV.BADI.EHZ. 2020-11-17T08:30:49.41 0.3 undecidable manual S 320 0.1619 117 0.17 72
IV.ATCC.EHZ. 2020-11-17T08:30:48.37 0.1 negative manual P 137 0.2716 50 -0.15 94
IV.FRON.EHZ. 2020-11-17T08:30:48.42 0.3 undecidable manual P 62 0.2788 50 -0.22 70
IV.PARC.HHZ. 2020-11-17T08:30:48.65 0.3 undecidable manual P 338 0.2842 50 -0.08 72
IV.NARO.HHZ. 2020-11-17T08:30:48.19 0.6 positive manual P 32 0.2653 50 -0.22 47
IV.CAFI.HHZ. 2020-11-17T08:30:48.98 1.0 positive manual P 260 0.3112 50 -0.21 23
IV.ATMI.HHZ. 2020-11-17T08:30:47.10 0.3 undecidable manual S 239 0.1007 130 -0.17 73
IT.UMBT.HGZ. 2020-11-17T08:30:47.45 0.3 undecidable manual S 201 0.0872 134 0.57 66
IV.MURB.HHZ. 2020-11-17T08:30:46.21 0.1 positive manual P 141 0.1583 118 0.01 99
IV.BADI.EHZ. 2020-11-17T08:30:46.37 0.1 positive manual P 320 0.1619 117 0.09 98
IV.APEC.HHZ. 2020-11-17T08:30:46.70 0.1 positive manual P 8 0.1745 116 0.17 96
IV.ATPI.EHZ. 2020-11-17T08:30:46.15 0.3 undecidable manual S 10 0.0665 142 -0.19 73
IV.ATMI.HHZ. 2020-11-17T08:30:45.10 0.3 undecidable manual P 239 0.1007 130 -0.04 75
IT.UMBT.HGZ. 2020-11-17T08:30:45.17 0.3 undecidable manual P 201 0.0872 134 0.26 72
IV.ATPI.EHZ. 2020-11-17T08:30:44.66 0.1 undecidable manual P 10 0.0665 142 0.06 100
IV.ATVO.HHZ. 2020-11-17T08:30:44.93 0.1 undecidable manual S 103 0.0144 170 -0.57 89
IV.ATVO.HHZ. 2020-11-17T08:30:43.98 0.1 undecidable manual P 103 0.0144 170 -0.14 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHE. ML:0 0.003655 1.6 AML other m 2020-11-17T08:30:45.99
IV.ATVO.HHN. ML:0 0.004485 0.36 AML other m 2020-11-17T08:30:45.21
IV.ATPI.EHE. ML:2 0.001485 0.34 AML other m 2020-11-17T08:30:46.17
IV.ATPI.HNE. ML:2 0.00147 0.32 AML other m 2020-11-17T08:30:46.17
IV.ATPI.HNN. ML:1.9 0.001235 0.38 AML other m 2020-11-17T08:30:46.29
IV.ATPI.EHN. ML:1.9 0.001199 0.4 AML other m 2020-11-17T08:30:46.29
IV.ATMI.HHN. ML:1.7 0.000633 0.94 AML other m 2020-11-17T08:30:47.56
IV.ATMI.HHE. ML:1.6 0.0005665 1.28 AML other m 2020-11-17T08:30:47.06
IV.MURB.HNE. ML:2.1 0.001085 0.34 AML other m 2020-11-17T08:30:49.40
IV.MURB.HHE. ML:2.2 0.00135 0.2 AML other m 2020-11-17T08:30:49.46
IV.BADI.EHE. ML:2.2 0.0012195 0.98 AML other m 2020-11-17T08:30:49.52
IV.BADI.EHN. ML:2.1 0.0010295 0.1 AML other m 2020-11-17T08:30:49.95
IV.APEC.HHN. ML:1.8 0.0004795 0.2 AML other m 2020-11-17T08:30:50.12
IV.APEC.HHE. ML:1.8 0.000457 0.18 AML other m 2020-11-17T08:30:50.38
IV.MURB.HHN. ML:2.2 0.001515 1.38 AML other m 2020-11-17T08:30:50.06
IV.MURB.HNN. ML:2.3 0.00156 1.36 AML other m 2020-11-17T08:30:50.07
IV.FRON.EHN. ML:1.6 0.0001865 0.14 AML other m 2020-11-17T08:30:53.47
IV.FRON.EHE. ML:1.6 0.000171 0.1 AML other m 2020-11-17T08:30:53.45
IV.ATCC.EHN. ML:1.7 0.0002665 0.86 AML other m 2020-11-17T08:30:53.81
IV.ATCC.EHE. ML:1.8 0.000299 1.22 AML other m 2020-11-17T08:30:54.16
IV.CAFI.HHE. ML:1.6 0.0001785 0.28 AML other m 2020-11-17T08:30:54.27
IV.CAFI.HHN. ML:1.7 0.000194 0.42 AML other m 2020-11-17T08:30:54.32
IV.PARC.HHN. ML:1.8 0.000288 0.18 AML other m 2020-11-17T08:30:54.49
IV.PARC.HHE. ML:1.8 0.000306 0.2 AML other m 2020-11-17T08:30:54.53
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