INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.2 on date 02-12-2018 and time 20:16:36 (Italy) in region 5 km SW Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 5 km SW Norcia (PG), on

  • 02-12-2018 19:16:36 (UTC)
  • 02-12-2018 20:16:36 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.75, 13.06 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 5 4957 4957
Cascia PG 5 3217 8174
Poggiodomo PG 11 117 8291
Cerreto di Spoleto PG 14 1075 9366
Preci PG 14 724 10090
Monteleone di Spoleto PG 14 599 10689
Vallo di Nera PG 16 364 11053
Accumoli RI 17 667 11720
Cittareale RI 17 482 12202
Castelsantangelo sul Nera MC 18 281 12483
Sant'Anatolia di Narco PG 18 564 13047
Sellano PG 19 1079 14126
Scheggino PG 19 461 14587
Arquata del Tronto AP 19 1178 15765
Visso MC 20 1107 16872

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km SE of Foligno (57155 inhabitants)
40 Km NE of Terni (111501 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
54 Km W of Teramo (54892 inhabitants)
67 Km SE of Perugia (166134 inhabitants)
87 Km E of Viterbo (67173 inhabitants)
88 Km NE of Guidonia Montecelio (88673 inhabitants)
90 Km N of Tivoli (56533 inhabitants)
93 Km W of Montesilvano (53738 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 2018-12-02
19:16:36
42.75 13.06 11 2018-12-02
19:50:04
Sala Sismica INGV-Roma 63588971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-02 19:16:36 ± 0.05
Latitude 42.75 ± 0.00
Longitude 13.06 ± 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 63588971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 529
Semi-minor axis of confidence ellipse (meter) 185
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 298
Circular confidence region, given by single value of horizontal uncertainty (meter) 530
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.28329
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 63588971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-12-02 19:50:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MNTV.HNZ. 2018-12-02T19:17:44.83 3.0 undecidable manual Sn -3.7 0
IV.VTIR.HHZ. 2018-12-02T19:17:34.54 3.0 undecidable manual Sn -0.23 0
IV.VBKN.HHZ. 2018-12-02T19:17:34.46 3.0 undecidable manual Sn 0.16 0
IV.COLB.HHZ. 2018-12-02T19:17:29.12 3.0 undecidable manual Sn -3.14 0
IV.BDI.HHZ. 2018-12-02T19:17:05.75 3.0 negative manual Pg -0.02 0
IV.RMP.HHZ. 2018-12-02T19:17:03.41 3.0 undecidable manual Sn -0.83 0
IV.PE3.EHZ. 2018-12-02T19:16:59.16 3.0 undecidable manual Sg -4.17 0
IV.BLLA.EHZ. 2018-12-02T19:16:55.25 3.0 undecidable manual Pg -0.34 0
IV.RCAV.EHZ. 2018-12-02T19:16:52.77 3.0 undecidable manual Pg 3.2 0
IV.CSP1.EHZ. 2018-12-02T19:16:48.85 3.0 undecidable manual S -0.94 0
IV.FDMO.HHZ. 2018-12-02T19:16:47.80 0.1 undecidable manual S 4 0.2833 50 -0.03 96
IV.MMO1.EHZ. 2018-12-02T19:16:46.64 0.1 undecidable manual S 53 0.2428 50 0 97
IV.MC2.EHZ. 2018-12-02T19:16:45.15 0.1 undecidable manual S 31 0.1835 50 0.28 94
IV.LNSS.HHZ. 2018-12-02T19:16:43.80 0.1 undecidable manual S 186 0.152 123 -0.13 98
IV.GAVE.EHZ. 2018-12-02T19:16:43.44 0.1 undecidable manual S 243 0.1367 126 -0.02 100
IV.FDMO.HHZ. 2018-12-02T19:16:43.12 0.1 undecidable manual P 4 0.2833 50 -0.11 94
IV.MMO1.EHZ. 2018-12-02T19:16:42.48 0.6 undecidable manual P 53 0.2428 50 -0.07 48
IV.SMA1.EHZ. 2018-12-02T19:16:42.63 1.0 negative manual P 121 0.2365 50 0.2 24
IV.LNSS.HHZ. 2018-12-02T19:16:41.04 0.1 positive manual P 186 0.152 123 0.06 99
IV.NRCA.HHZ. 2018-12-02T19:16:41.84 0.1 undecidable manual S 26 0.089 138 -0.22 99
IV.MC2.EHZ. 2018-12-02T19:16:41.67 1.0 negative manual P 31 0.1835 50 0.15 24
IV.NRCA.HHZ. 2018-12-02T19:16:40.01 0.1 positive manual P 26 0.089 138 0.1 98
IV.GAVE.EHZ. 2018-12-02T19:16:40.90 0.3 positive manual P 243 0.1367 126 0.19 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.000208 1.56 AML other m 2018-12-02T19:16:42.15
IV.NRCA.HHE. ML:1.2 0.000189 0.94 AML other m 2018-12-02T19:16:42.00
IV.LNSS.HHE. ML:1.3 0.0001785 0.1 AML other m 2018-12-02T19:16:44.07
IV.GAVE.EHE. ML:1.1 0.000104 1.5 AML other m 2018-12-02T19:16:44.78
IV.LNSS.HHN. ML:1.2 0.0001185 0.16 AML other m 2018-12-02T19:16:44.05
IV.GAVE.EHN. ML:1 9.725E-5 1.5 AML other m 2018-12-02T19:16:44.87
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