INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.5 on date 13-01-2018 and time 04:43:31 (Italy) in region 7 km E Norcia (PG)

A magnitude ML 1.5 earthquake occured in region: 7 km E Norcia (PG), on

  • 13-01-2018 03:43:31 (UTC)
  • 13-01-2018 04:43:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.82, 13.16 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.

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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
Norcia PG 7 4957 4957
Castelsantangelo sul Nera MC 8 281 5238
Arquata del Tronto AP 12 1178 6416
Preci PG 12 724 7140
Visso MC 14 1107 8247
Ussita MC 14 444 8691
Montegallo AP 14 523 9214
Accumoli RI 16 667 9881
Montemonaco AP 16 604 10485
Cascia PG 17 3217 13702
Montefortino FM 20 1178 14880

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
48 Km W of Teramo (54892 inhabitants)
51 Km NE of Terni (111501 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
71 Km E of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
95 Km W of Pescara (121014 inhabitants)
97 Km NW of Chieti (51815 inhabitants)
98 Km E of Viterbo (67173 inhabitants)
98 Km NE of Guidonia Montecelio (88673 inhabitants)
100 Km NE 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 1.5 2018-01-13
03:43:31		 42.82 13.17 11 2018-01-13
04:03:45		 Sala Sismica INGV-Roma 53167321
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-01-13 03:43:31 ± 0.03
Latitude 42.82 ± 0.00
Longitude 13.17 ± 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 53167321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 283
Semi-minor axis of confidence ellipse (meter) 153
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 62
Circular confidence region, given by single value of horizontal uncertainty (meter) 280
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 77
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.03957
Epicentral distance of station farthest from the epicenter (degree) 0.37772
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 53167321
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-01-13 04:03:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2018-01-13T03:43:45.11 0.3 undecidable manual S 121 0.3777 50 0 71
IV.CAMP.HHZ. 2018-01-13T03:43:43.75 0.3 undecidable manual S 148 0.3363 50 -0.13 70
IV.RM33.EHZ. 2018-01-13T03:43:43.35 0.3 undecidable manual S 173 0.3139 50 0.15 70
IV.CSP1.EHZ. 2018-01-13T03:43:42.12 0.6 undecidable manual S 6 0.2725 50 0.14 47
IV.CESI.HHZ. 2018-01-13T03:43:41.77 0.6 undecidable manual S 314 0.2653 50 0 48
IV.LNSS.HHZ. 2018-01-13T03:43:41.01 0.3 undecidable manual S 203 0.2365 50 0.1 72
IV.T1299.EHZ. 2018-01-13T03:43:40.29 0.3 undecidable manual S 155 0.205 50 0.3 69
IV.T1221.EHZ. 2018-01-13T03:43:40.76 0.6 undecidable manual S 280 0.2365 50 -0.16 47
IV.FDMO.HHZ. 2018-01-13T03:43:40.42 0.6 undecidable manual S 345 0.223 50 -0.1 48
IV.SMA1.EHZ. 2018-01-13T03:43:40.52 0.3 undecidable manual S 147 0.2275 50 -0.13 71
IV.TERO.HHZ. 2018-01-13T03:43:39.13 0.1 undecidable manual P 121 0.3777 50 -0.18 91
IV.RM33.EHZ. 2018-01-13T03:43:38.14 0.1 undecidable manual P 173 0.3139 50 -0.07 95
IV.CAMP.HHZ. 2018-01-13T03:43:38.44 0.1 undecidable manual P 148 0.3363 50 -0.16 92
IV.CESI.HHZ. 2018-01-13T03:43:37.42 0.1 undecidable manual P 314 0.2653 50 0.04 96
IV.MMO1.EHZ. 2018-01-13T03:43:37.91 0.6 undecidable manual S 56 0.1421 124 -0.1 49
IV.CSP1.EHZ. 2018-01-13T03:43:37.54 0.6 undecidable manual P 6 0.2725 50 0.04 48
IV.LNSS.HHZ. 2018-01-13T03:43:36.86 0.1 undecidable manual P 203 0.2365 50 -0.02 97
IV.T1299.EHZ. 2018-01-13T03:43:36.46 0.1 undecidable manual P 155 0.205 50 0.11 96
IV.T1221.EHZ. 2018-01-13T03:43:36.97 1.0 undecidable manual P 280 0.2365 50 0.08 24
IV.FDMO.HHZ. 2018-01-13T03:43:36.66 0.6 negative manual P 345 0.223 50 0 49
IV.SMA1.EHZ. 2018-01-13T03:43:36.63 0.1 undecidable manual P 147 0.2275 50 -0.1 95
IV.MMO1.EHZ. 2018-01-13T03:43:35.28 0.1 undecidable manual P 56 0.1421 124 0.07 98
IV.NRCA.HHZ. 2018-01-13T03:43:35.07 0.6 undecidable manual S 289 0.0396 158 -0.34 47
IV.T1214.EHZ. 2018-01-13T03:43:35.92 0.6 undecidable manual S 152 0.0692 145 -0.05 50
IV.T1214.EHZ. 2018-01-13T03:43:34.22 0.3 negative manual P 152 0.0692 145 0.19 72
IV.MC2.EHZ. 2018-01-13T03:43:34.66 0.6 positive manual P 11 0.0926 136 0.3 47
IV.NRCA.HHZ. 2018-01-13T03:43:33.76 0.1 undecidable manual P 289 0.0396 158 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.5 0.0004585 0.12 AML other m 2018-01-13T03:43:35.16
IV.NRCA.HNE. ML:1.6 0.000674 0.2 AML other m 2018-01-13T03:43:35.36
IV.NRCA.HHE. ML:1.6 0.00067 0.2 AML other m 2018-01-13T03:43:35.26
IV.NRCA.HHN. ML:1.5 0.000518 0.9 AML other m 2018-01-13T03:43:35.67
IV.T1299.HNE. ML:1.5 0.0002145 0.4 AML other m 2018-01-13T03:43:39.28
IV.CESI.HHN. ML:1.3 0.00010055 1.82 AML other m 2018-01-13T03:43:41.03
IV.CESI.HHE. ML:1.3 9.455E-5 1.32 AML other m 2018-01-13T03:43:42.01
IV.T1299.HNN. ML:2.8 0.00365 0.42 AML other m 2018-01-13T03:43:43.52
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