Earthquake with magnitude of ML 0.7 on date 18-09-2019 and time 22:20:16 (Italy) in region 2 km NE Norcia (PG)

A magnitude ML 0.7 earthquake occured in region: 2 km NE Norcia (PG), on

  • 18-09-2019 20:20:16 (UTC)
  • 18-09-2019 22:20:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8, 13.11 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 2 4957 4957
Preci PG 10 724 5681
Castelsantangelo sul Nera MC 11 281 5962
Cascia PG 12 3217 9179
Visso MC 14 1107 10286
Arquata del Tronto AP 16 1178 11464
Ussita MC 16 444 11908
Cerreto di Spoleto PG 16 1075 12983
Accumoli RI 16 667 13650
Poggiodomo PG 18 117 13767
Sellano PG 18 1079 14846
Montegallo AP 19 523 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
68 Km SE of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 inhabitants)
100 Km NW 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
Rev 100 ML 0.7 2019-09-18
20:20:16
42.8 13.11 11 2019-09-18
20:28:13
Sala Sismica INGV-Roma 72533141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-18 20:20:16 ± 0.07
Latitude 42.80 ± 0.00
Longitude 13.11 ± 0.01
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 72533141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 615
Semi-minor axis of confidence ellipse (meter) 195
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 84
Circular confidence region, given by single value of horizontal uncertainty (meter) 620
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 31
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.34534
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 12
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 72533141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-18 20:28:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MILN.HHZ. 2019-09-18T20:22:02.47 3.0 undecidable manual Sn -1.09 0
IV.MNTV.HNZ. 2019-09-18T20:21:39.06 3.0 undecidable manual Sn -0.2 0
IV.MPNC.HHZ. 2019-09-18T20:21:31.46 3.0 undecidable manual Pg 14.38 0
IV.PLLN.EHZ. 2019-09-18T20:21:26.14 3.0 negative manual Pg 9.55 0
IV.MSRU.HHZ. 2019-09-18T20:21:13.67 3.0 negative manual Pn -2.4 0
IV.VENL.HNZ. 2019-09-18T20:20:57.10 3.0 negative manual Pn 0.77 0
IV.PAOL.HHZ. 2019-09-18T20:20:37.18 3.0 negative manual Pn 0.03 0
IV.MURB.HNZ. 2019-09-18T20:20:31.20 3.0 undecidable manual Pg 1.8 0
IV.CAMP.HHE. 2019-09-18T20:20:28.94 0.6 undecidable manual S 141 0.3453 50 -0.17 48
IV.MML1.EHE. 2019-09-18T20:20:28.71 0.6 undecidable manual S 342 0.3265 50 0.16 48
IV.PF6.EHE. 2019-09-18T20:20:28.71 0.6 undecidable manual S 10 0.3399 50 -0.23 47
IV.CSP1.EHZ. 2019-09-18T20:20:27.66 0.6 undecidable manual S 13 0.2959 50 0 50
IV.SMA1.EHZ. 2019-09-18T20:20:26.42 0.3 undecidable manual S 136 0.2383 50 0.48 68
IV.FDMO.HHZ. 2019-09-18T20:20:25.53 0.6 undecidable manual S 356 0.2338 50 -0.27 48
IV.GAVE.EHZ. 2019-09-18T20:20:24.72 0.6 undecidable manual S 235 0.1952 50 0.06 50
IV.LNSS.HHE. 2019-09-18T20:20:24.67 0.6 undecidable manual S 195 0.2077 50 -0.36 47
IV.MML1.EHE. 2019-09-18T20:20:23.32 0.1 undecidable manual P 342 0.3265 50 -0.11 97
IV.CSP1.EHZ. 2019-09-18T20:20:23.10 0.6 positive manual P 13 0.2959 50 0.19 48
IV.PF6.EHE. 2019-09-18T20:20:23.76 0.1 undecidable manual P 10 0.3399 50 0.11 97
IV.CAMP.HHE. 2019-09-18T20:20:23.60 0.1 undecidable manual P 141 0.3453 50 -0.15 96
IV.RM33.EHE. 2019-09-18T20:20:23.01 0.1 undecidable manual P 166 0.304 50 -0.03 99
IV.MC2.EHZ. 2019-09-18T20:20:22.63 0.6 undecidable manual S 28 0.1214 129 0.16 50
IV.SMA1.EHZ. 2019-09-18T20:20:21.60 0.1 undecidable manual P 136 0.2383 50 -0.32 94
IV.FDMO.HHZ. 2019-09-18T20:20:21.88 0.1 undecidable manual P 356 0.2338 50 0.04 100
IV.GAVE.EHZ. 2019-09-18T20:20:21.62 1.0 negative manual P 235 0.1952 50 0.44 23
IV.LNSS.HHE. 2019-09-18T20:20:21.65 0.1 undecidable manual P 195 0.2077 50 0.26 96
IV.NRCA.HHZ. 2019-09-18T20:20:20.17 0.3 undecidable manual S 3 0.0297 163 -0.26 75
IV.MC2.EHZ. 2019-09-18T20:20:20.24 0.6 positive manual P 28 0.1214 129 0.32 48
IV.MMO1.EHZ. 2019-09-18T20:20:20.92 1.0 positive manual P 59 0.1844 50 -0.07 25
IV.NRCA.HHZ. 2019-09-18T20:20:18.96 1.0 undecidable manual P 3 0.0297 163 0.22 25
IV.VCEL.EHZ. 2019-09-18T20:20:16.43 3.0 negative manual P -0.08 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0 0.00065 0.14 AML other m 2019-09-18T20:20:20.32
IV.NRCA.HHE. ML:0 0.0007685 0.1 AML other m 2019-09-18T20:20:20.45
IV.SMA1.EHE. ML:0.7 2.8257295E-5 0.1792 AML other m 2019-09-18T20:20:27.51
IV.SMA1.EHN. ML:0.6 2.2056935E-5 0.1408 AML other m 2019-09-18T20:20:27.69
IV.GAVE.EHE. ML:0.7 3.748672E-5 0.1536 AML other m 2019-09-18T20:20:25.24
IV.GAVE.EHN. ML:0.6 3.0300895E-5 0.1408 AML other m 2019-09-18T20:20:25.50
IV.FDMO.HHE. ML:0.4 1.6496095E-5 0.1024 AML other m 2019-09-18T20:20:25.78
IV.FDMO.HHN. ML:0.6 2.507329E-5 0.1024 AML other m 2019-09-18T20:20:26.05
IV.CSP1.EHE. ML:0.8 2.7395904E-5 0.96 AML other m 2019-09-18T20:20:28.83
IV.CSP1.EHN. ML:1.1 5.6894285E-5 2.3296 AML other m 2019-09-18T20:20:28.42
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