INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.5 on date 16-09-2018 and time 13:27:42 (Italy) in region 6 km S Preci (PG)

A magnitude ML 0.5 earthquake occured in region: 6 km S Preci (PG), on

  • 16-09-2018 11:27:42 (UTC)
  • 16-09-2018 13:27:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.83, 13.04 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
Preci PG 6 724 724
Norcia PG 6 4957 5681
Cerreto di Spoleto PG 10 1075 6756
Sellano PG 11 1079 7835
Castelsantangelo sul Nera MC 12 281 8116
Visso MC 12 1107 9223
Cascia PG 13 3217 12440
Ussita MC 15 444 12884
Poggiodomo PG 16 117 13001
Vallo di Nera PG 16 364 13365
Monte Cavallo MC 19 145 13510
Sant'Anatolia di Narco PG 20 564 14074

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
58 Km W of Teramo (54892 inhabitants)
61 Km NW of L'Aquila (69753 inhabitants)
61 Km SE of Perugia (166134 inhabitants)
89 Km NE of Viterbo (67173 inhabitants)
96 Km N of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
97 Km W of Montesilvano (53738 inhabitants)
98 Km N of Tivoli (56533 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 0.5 2018-09-16
11:27:42
42.83 13.04 11 2018-09-16
11:41:00
Sala Sismica INGV-Roma 61006831
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-16 11:27:42 ± 0.04
Latitude 42.83 ± 0.00
Longitude 13.04 ± 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 61006831

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 363
Semi-minor axis of confidence ellipse (meter) 226
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 118
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
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 12
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 61006831
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-16 11:41:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CLTA.HHZ. 2018-09-16T11:28:51.51 3.0 positive manual Pn -5.96 0
IV.RESU.HHZ. 2018-09-16T11:28:50.75 3.0 undecidable manual Pn -0.6 0
CR.STON.BHZ. 2018-09-16T11:28:35.44 3.0 positive manual Pn 1.28 0
IV.LNSS.HHE. 2018-09-16T11:27:52.22 0.6 undecidable manual S 180 0.2266 50 0.21 48
IV.MMO1.HNE. 2018-09-16T11:27:51.68 0.6 undecidable manual S 72 0.2221 50 -0.2 48
IV.CESI.HHZ. 2018-09-16T11:27:51.25 0.3 undecidable manual S 331 0.2005 50 0.03 75
IV.FDMO.HHZ. 2018-09-16T11:27:51.42 0.3 undecidable manual S 10 0.2095 50 -0.07 74
OB.GAVE.HNN. 2018-09-16T11:27:50.42 0.3 undecidable manual S 218 0.1736 119 0.01 76
IV.MC2.EHZ. 2018-09-16T11:27:49.27 0.3 undecidable manual S 54 0.1376 125 0.04 76
IV.MML1.HNZ. 2018-09-16T11:27:49.22 0.6 undecidable manual P 350 0.2878 50 0.08 49
IV.LNSS.HHE. 2018-09-16T11:27:48.18 0.1 undecidable manual P 180 0.2266 50 0.08 98
IV.FDMO.HHZ. 2018-09-16T11:27:47.81 0.3 undecidable manual P 10 0.2095 50 0.01 75
IV.MMO1.HNE. 2018-09-16T11:27:47.96 0.1 undecidable manual P 72 0.2221 50 -0.06 99
IV.CESI.HHZ. 2018-09-16T11:27:47.57 0.3 undecidable manual P 331 0.2005 50 -0.08 74
IV.NRCA.HHZ. 2018-09-16T11:27:46.89 0.3 undecidable manual S 86 0.0558 150 -0.18 75
IV.FEMA.HNE. 2018-09-16T11:27:46.52 0.1 undecidable manual P 4 0.1322 126 0.11 99
IV.MC2.EHZ. 2018-09-16T11:27:46.61 0.3 undecidable manual P 54 0.1376 125 0.12 74
OB.GAVE.HNN. 2018-09-16T11:27:46.85 0.3 undecidable manual P 218 0.1736 119 -0.33 71
IV.NRCA.HHZ. 2018-09-16T11:27:45.40 0.1 undecidable manual P 86 0.0558 150 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.1 0.0001725 1.86 AML other m 2018-09-16T11:27:47.97
IV.NRCA.HHE. ML:1.1 0.000194 0.1 AML other m 2018-09-16T11:27:47.17
IV.FDMO.HHE. ML:0.4 1.53E-5 0.22 AML other m 2018-09-16T11:27:51.60
IV.CESI.HHN. ML:0.7 3.405E-5 0.18 AML other m 2018-09-16T11:27:51.55
IV.FDMO.HHN. ML:0.5 1.98E-5 1.14 AML other m 2018-09-16T11:27:52.02
IV.CESI.HHE. ML:0.5 2.1E-5 0.98 AML other m 2018-09-16T11:27:52.56
IV.SARZ.HHE. ML:3.3 0.0001027 1.94 AML other m 2018-09-16T11:28:32.97
IV.SARZ.HHN. ML:3.2 9.925E-5 1.82 AML other m 2018-09-16T11:28:33.99
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