Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 18-11-2019 and time 20:13:42 (UTC) in region 6 km SW Castelsantangelo sul Nera (MC)

A magnitude ML 1.2 earthquake occured in region: 6 km SW Castelsantangelo sul Nera (MC), on

  • 18-11-2019 20:13:42 (UTC)
  • 18-11-2019 21:13:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.85, 13.12 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.

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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
Castelsantangelo sul Nera MC 6 281 281
Norcia PG 7 4957 5238
Preci PG 7 724 5962
Visso MC 9 1107 7069
Ussita MC 11 444 7513
Sellano PG 16 1079 8592
Cerreto di Spoleto PG 17 1075 9667
Cascia PG 17 3217 12884
Arquata del Tronto AP 17 1178 14062
Montegallo AP 18 523 14585
Montemonaco AP 18 604 15189
Monte Cavallo MC 19 145 15334
Bolognola MC 19 142 15476

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
53 Km W of Teramo (54892 inhabitants)
60 Km NW of L'Aquila (69753 inhabitants)
66 Km E of Perugia (166134 inhabitants)
92 Km SW of Ancona (100861 inhabitants)
92 Km W of Montesilvano (53738 inhabitants)
96 Km NE of Viterbo (67173 inhabitants)
100 Km NE of Guidonia Montecelio (88673 inhabitants)
100 Km W of Pescara (121014 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 1.2 2019-11-18
20:13:42		 42.85 13.12 10 2019-11-18
20:25:20		 Sala Sismica INGV-Roma 73910541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-11-18 20:13:42 ± 0.12
Latitude 42.85 ± 0.01
Longitude 13.12 ± 0.01
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 73910541

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 744
Semi-minor axis of confidence ellipse (meter) 135
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 219
Circular confidence region, given by single value of horizontal uncertainty (meter) 740
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 25
Number of defining phases 19
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
Epicentral distance of station farthest from the epicenter (degree) 0.28778
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.5
Num. used stations 8
Type of magnitude ML
Reference to an origin 73910541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-11-18 20:25:20
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ORI.HHZ. 2019-11-18T20:15:08.36 3.0 undecidable manual Sn 0.02 0
IV.VENL.HNZ. 2019-11-18T20:14:58.50 3.0 undecidable manual Sn 0.05 0
IV.NDIM.HHZ. 2019-11-18T20:14:49.31 3.0 undecidable manual Sn -0.24 0
IV.MTMR.EHZ. 2019-11-18T20:14:36.89 3.0 undecidable manual Sg 2.67 0
IV.BRSN.EHZ. 2019-11-18T20:14:34.81 3.0 undecidable manual Sg 3.97 0
IV.CSP1.EHZ. 2019-11-18T20:13:52.88 0.3 undecidable manual S 15 0.2509 50 -0.04 98
IV.MTRA.HNN. 2019-11-18T20:13:51.91 0.3 undecidable manual S 114 0.2257 112 -0.23 94
IV.CESI.HNE. 2019-11-18T20:13:51.78 0.3 undecidable manual S 315 0.2185 112 -0.1 97
IV.FDMO.HHZ. 2019-11-18T20:13:50.68 0.3 undecidable manual S 354 0.188 115 -0.12 97
IV.MMO1.EHZ. 2019-11-18T20:13:49.80 0.3 undecidable manual S 72 0.1628 119 -0.13 98
IV.SMA1.EHE. 2019-11-18T20:13:49.45 0.6 undecidable manual P 143 0.2716 50 0.46 59
IT.MTCL.HGZ. 2019-11-18T20:13:49.86 0.3 undecidable manual S 330 0.1673 118 -0.22 96
IV.MF5.EHZ. 2019-11-18T20:13:48.84 0.6 undecidable manual P 61 0.2878 50 -0.42 60
IV.MTRA.HNN. 2019-11-18T20:13:48.05 0.3 undecidable manual P 114 0.2257 112 -0.13 96
IV.CSP1.EHZ. 2019-11-18T20:13:48.59 0.3 undecidable manual P 15 0.2509 50 -0.04 98
IV.CESI.HNE. 2019-11-18T20:13:48.04 0.3 undecidable manual P 315 0.2185 112 0.01 99
IT.MTCL.HGZ. 2019-11-18T20:13:47.55 0.3 undecidable manual P 330 0.1673 118 0.55 88
IV.FDMO.HHZ. 2019-11-18T20:13:47.46 0.3 undecidable manual P 354 0.188 115 0.06 99
IV.MC2.EHZ. 2019-11-18T20:13:47.83 0.3 undecidable manual S 41 0.0818 137 0.38 94
IV.MMO1.EHZ. 2019-11-18T20:13:46.96 0.3 undecidable manual P 72 0.1628 119 0.06 99
IV.NRCA.HHZ. 2019-11-18T20:13:46.01 0.3 undecidable manual S 183 0.0162 170 -0.26 98
IV.MC2.EHZ. 2019-11-18T20:13:45.88 0.3 undecidable manual P 41 0.0818 137 0.41 93
IV.FEMA.HNZ. 2019-11-18T20:13:45.77 0.3 undecidable manual P 337 0.1223 126 -0.37 94
IV.NRCA.HHZ. 2019-11-18T20:13:44.94 0.3 undecidable manual P 183 0.0162 170 0.15 100
TV.SF04.EHZ. 2019-11-18T20:13:42.59 3.0 undecidable manual P 0.02 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:1.7 0.0010800245 0.0768 AML other m 2019-11-18T20:13:46.14
IV.NRCA.HNN. ML:1.5 0.00063330595 0.064 AML other m 2019-11-18T20:13:46.16
IV.NRCA.HHE. ML:1.8 0.001202239 0.064 AML other m 2019-11-18T20:13:46.09
IV.NRCA.HHN. ML:1.5 0.0006414264 0.0896 AML other m 2019-11-18T20:13:46.11
IV.FDMO.HHE. ML:0.8 3.861032E-5 2.24 AML other m 2019-11-18T20:13:52.68
IV.FDMO.HHN. ML:0.6 2.6634595E-5 1.6 AML other m 2019-11-18T20:13:52.73
IV.CSP1.EHE. ML:0.5 1.56838635E-5 0.96 AML other m 2019-11-18T20:13:53.12
IV.CSP1.EHN. ML:0.9 4.5810025E-5 3.4176 AML other m 2019-11-18T20:13:54.63
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
Waveforms Seismic signals in full SEED format Download