Earthquake with magnitude of ML 0.8 on date 21-10-2018 and time 02:02:09 (Italy) in region 3 km E Norcia (PG)

A magnitude ML 0.8 earthquake occured in region: 3 km E Norcia (PG), on

  • 21-10-2018 00:02:09 (UTC)
  • 21-10-2018 02:02:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.79, 13.13 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.

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 3 4957 4957
Castelsantangelo sul Nera MC 12 281 5238
Preci PG 12 724 5962
Cascia PG 13 3217 9179
Arquata del Tronto AP 14 1178 10357
Accumoli RI 14 667 11024
Visso MC 16 1107 12131
Ussita MC 17 444 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 18 1075 14173
Poggiodomo PG 18 117 14290
Cittareale RI 19 482 14772
Sellano PG 20 1079 15851
Montemonaco AP 20 604 16455

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km W of Pescara (121014 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
98 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 0.8 2018-10-21
00:02:09
42.79 13.13 10 2018-10-21
00:09:02
Sala Sismica INGV-Roma 62154941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-21 00:02:09 ± 0.04
Latitude 42.79 ± 0.00
Longitude 13.13 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 62154941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 198
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 81
Circular confidence region, given by single value of horizontal uncertainty (meter) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.04407
Epicentral distance of station farthest from the epicenter (degree) 0.78331
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 62154941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-21 00:09:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FOSV.EHZ. 2018-10-21T00:02:28.96 0.6 undecidable manual S 332 0.5711 50 0.1 45
IV.FRON.EHZ. 2018-10-21T00:02:28.14 3.0 undecidable manual S 338 0.7833 50 -7.02 0
IV.ASSB.HHZ. 2018-10-21T00:02:24.81 0.6 undecidable manual S 306 0.4281 50 0.19 45
IV.FRON.EHZ. 2018-10-21T00:02:23.99 0.1 undecidable manual P 338 0.7833 50 -0.21 83
IV.MF5.EHZ. 2018-10-21T00:02:21.38 0.6 undecidable manual S 51 0.3094 50 0.28 45
IV.RM33.EHN. 2018-10-21T00:02:20.44 0.6 undecidable manual S 168 0.2896 50 -0.07 47
IV.FOSV.EHZ. 2018-10-21T00:02:20.71 0.1 undecidable manual P 332 0.5711 50 0.15 88
IV.CESI.HHZ. 2018-10-21T00:02:19.77 0.6 undecidable manual S 322 0.2707 50 -0.19 46
IV.FDMO.HHZ. 2018-10-21T00:02:19.13 0.6 undecidable manual S 352 0.2464 50 -0.12 47
IV.ASSB.HHZ. 2018-10-21T00:02:18.02 0.3 undecidable manual P 306 0.4281 50 -0.09 69
IV.SMA1.EHZ. 2018-10-21T00:02:18.19 0.6 undecidable manual S 137 0.2194 112 -0.16 47
IV.MTRA.EHZ. 2018-10-21T00:02:17.33 0.6 undecidable manual S 100 0.197 114 -0.21 47
IV.GAVE.EHZ. 2018-10-21T00:02:17.57 0.6 undecidable manual S 240 0.2014 114 -0.15 47
IV.LNSS.HHE. 2018-10-21T00:02:17.86 0.6 undecidable manual S 200 0.2005 114 0.17 47
IV.T1299.EHE. 2018-10-21T00:02:17.72 0.6 undecidable manual S 145 0.1925 115 0.34 46
IV.MF5.EHZ. 2018-10-21T00:02:16.43 1.0 undecidable manual P 51 0.3094 50 0.35 22
IV.MMO1.EHZ. 2018-10-21T00:02:16.56 0.6 undecidable manual S 53 0.1781 117 -0.34 46
IV.FEMA.HNE. 2018-10-21T00:02:16.78 0.6 undecidable manual S 340 0.1808 116 -0.2 47
IV.CESI.HHZ. 2018-10-21T00:02:15.35 0.1 undecidable manual P 322 0.2707 50 -0.07 95
IV.RM33.EHN. 2018-10-21T00:02:15.58 0.1 undecidable manual P 168 0.2896 50 -0.16 93
IV.MC2.EHZ. 2018-10-21T00:02:15.66 0.6 undecidable manual S 19 0.1259 125 0.48 45
IV.SMA1.EHZ. 2018-10-21T00:02:14.41 0.6 positive manual P 137 0.2194 112 -0.08 48
IV.T1299.EHE. 2018-10-21T00:02:14.10 0.1 undecidable manual P 145 0.1925 115 0.16 95
IV.FDMO.HHZ. 2018-10-21T00:02:14.86 1.0 negative manual P 352 0.2464 50 -0.15 24
IV.FEMA.HNE. 2018-10-21T00:02:14.02 0.1 undecidable manual P 340 0.1808 116 0.31 92
IV.GAVE.EHZ. 2018-10-21T00:02:14.27 1.0 negative manual P 240 0.2014 114 0.14 24
IV.LNSS.HHE. 2018-10-21T00:02:14.15 0.1 undecidable manual P 200 0.2005 114 0.04 97
IV.MC2.EHZ. 2018-10-21T00:02:13.03 1.0 negative manual P 19 0.1259 125 0.37 23
IV.MMO1.EHZ. 2018-10-21T00:02:13.55 0.6 undecidable manual P 53 0.1781 117 -0.1 48
IV.MTRA.EHZ. 2018-10-21T00:02:13.93 0.3 undecidable manual P 100 0.197 114 -0.1 72
IV.NRCA.HNZ. 2018-10-21T00:02:12.56 0.6 undecidable manual S 342 0.0441 154 -0.5 45
IV.NRCA.HNZ. 2018-10-21T00:02:11.48 0.1 positive manual P 342 0.0441 154 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.9 0.001295 0.08 AML other m 2018-10-21T00:02:12.62
IV.NRCA.HNE. ML:1.9 0.00128 0.08 AML other m 2018-10-21T00:02:12.62
IV.NRCA.HHN. ML:2 0.00154 0.06 AML other m 2018-10-21T00:02:12.62
IV.NRCA.HNN. ML:1.9 0.001355 0.08 AML other m 2018-10-21T00:02:12.61
IV.MTRA.EHN. ML:0.7 3.605E-5 0.2 AML other m 2018-10-21T00:02:18.25
IV.MTRA.EHE. ML:0.8 4.355E-5 1.34 AML other m 2018-10-21T00:02:18.23
IV.GAVE.EHN. ML:0.8 4.29E-5 1.12 AML other m 2018-10-21T00:02:18.82
IV.FDMO.HHN. ML:0.7 2.355E-5 0.56 AML other m 2018-10-21T00:02:19.19
IV.SMA1.EHE. ML:0.9 4.97E-5 1.22 AML other m 2018-10-21T00:02:19.89
IV.CESI.HHE. ML:0.7 2.54E-5 0.38 AML other m 2018-10-21T00:02:20.27
IV.FDMO.HHE. ML:0.7 2.28E-5 0.92 AML other m 2018-10-21T00:02:20.72
IV.CESI.HHN. ML:0.9 3.46E-5 0.4 AML other m 2018-10-21T00:02:20.47
IV.GAVE.EHE. ML:0.9 5.335E-5 0.98 AML other m 2018-10-21T00:02:21.31
IV.SMA1.EHN. ML:0.8 3.83E-5 1.6 AML other m 2018-10-21T00:02:23.82
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