INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 1.1 on date 07-10-2018 and time 20:52:20 (Italy) in region 10 km NW Sellano (PG)

A magnitude ML 1.1 earthquake occured in region: 10 km NW Sellano (PG), on

  • 07-10-2018 18:52:20 (UTC)
  • 07-10-2018 20:52:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.96, 12.85 at 16 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
Sellano PG 10 1079 1079
Foligno PG 12 57155 58234
Monte Cavallo MC 13 145 58379
Trevi PG 13 8469 66848
Valtopina PG 13 1398 68246
Serravalle di Chienti MC 15 1070 69316
Spello PG 15 8645 77961
Cerreto di Spoleto PG 17 1075 79036
Nocera Umbra PG 17 5839 84875
Campello sul Clitunno PG 17 2442 87317
Preci PG 18 724 88041
Montefalco PG 18 5679 93720
Pieve Torina MC 18 1458 95178
Visso MC 20 1107 96285

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km E of Foligno (57155 inhabitants)
41 Km E of Perugia (166134 inhabitants)
48 Km NE of Terni (111501 inhabitants)
77 Km W of Teramo (54892 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
97 Km SE of Arezzo (99543 inhabitants)
99 Km S of Fano (60888 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 1.1 2018-10-07
18:52:20
42.96 12.85 17 2018-10-07
19:05:37
Sala Sismica INGV-Roma 61707251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-07 18:52:20 ± 0.06
Latitude 42.96 ± 0.00
Longitude 12.85 ± 0.00
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 61707251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 230
Semi-minor axis of confidence ellipse (meter) 60
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 195
Circular confidence region, given by single value of horizontal uncertainty (meter) 230
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.05486
Epicentral distance of station farthest from the epicenter (degree) 0.35253
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 15
Type of magnitude ML
Reference to an origin 61707251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-07 19:05:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.EHZ. 2018-10-07T18:52:33.52 0.1 undecidable manual S 101 0.3525 102 0.07 94
IV.CSP1.EHZ. 2018-10-07T18:52:31.71 0.3 undecidable manual S 64 0.286 105 0.16 70
IV.MOMA.HHZ. 2018-10-07T18:52:31.07 0.3 undecidable manual S 232 0.2626 107 0.19 69
IV.GAVE.EHZ. 2018-10-07T18:52:31.09 0.1 undecidable manual S 174 0.2743 106 -0.11 95
IV.NRCA.HHZ. 2018-10-07T18:52:29.99 0.1 undecidable manual S 124 0.2311 111 -0.01 97
IV.ASSB.HHZ. 2018-10-07T18:52:28.12 0.1 undecidable manual S 299 0.1628 122 -0.06 98
IV.MML1.HNZ. 2018-10-07T18:52:28.44 0.3 undecidable manual S 30 0.1718 120 0.03 73
IV.FDMO.HHZ. 2018-10-07T18:52:28.59 0.3 undecidable manual S 67 0.1853 118 -0.16 71
IV.FOSV.EHN. 2018-10-07T18:52:27.84 0.3 undecidable manual P 348 0.3363 102 0.16 69
IV.FEMA.HNE. 2018-10-07T18:52:27.84 0.3 undecidable manual S 91 0.143 127 0.14 72
IV.MMO1.EHZ. 2018-10-07T18:52:27.92 0.6 undecidable manual P 101 0.3525 102 -0.02 47
IV.MOMA.HHZ. 2018-10-07T18:52:26.36 0.6 undecidable manual P 232 0.2626 107 -0.1 47
IV.GAVE.EHZ. 2018-10-07T18:52:26.60 0.6 positive manual P 174 0.2743 106 -0.04 48
IV.CSP1.EHZ. 2018-10-07T18:52:26.85 1.0 negative manual P 64 0.286 105 0.01 24
IV.MC2.EHZ. 2018-10-07T18:52:26.29 0.1 undecidable manual P 102 0.2509 109 0.02 96
IV.FDMO.HHZ. 2018-10-07T18:52:25.10 0.1 undecidable manual P 67 0.1853 118 -0.13 95
IV.CESI.HHZ. 2018-10-07T18:52:25.99 0.1 undecidable manual S 43 0.0549 156 -0.05 100
IV.NRCA.HHZ. 2018-10-07T18:52:25.81 0.1 negative manual P 124 0.2311 111 -0.14 94
IV.ASSB.HHZ. 2018-10-07T18:52:24.89 0.1 undecidable manual P 299 0.1628 122 0 98
IV.FEMA.HNE. 2018-10-07T18:52:24.66 0.1 undecidable manual P 91 0.143 127 0.03 98
IV.MML1.HNZ. 2018-10-07T18:52:24.99 0.1 undecidable manual P 30 0.1718 120 -0.04 97
IV.CESI.HHZ. 2018-10-07T18:52:23.71 0.3 positive manual P 43 0.0549 156 0.05 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.9 8.0266785E-5 0.1536 AML other m 2018-10-07T18:52:26.44
IV.CESI.HHE. ML:1 8.8864265E-5 0.2176 AML other m 2018-10-07T18:52:26.23
IV.ASSB.HHN. ML:1 7.464484E-5 0.1792 AML other m 2018-10-07T18:52:28.38
IV.ASSB.HHE. ML:1 5.8100535E-5 0.1024 AML other m 2018-10-07T18:52:28.45
IV.FDMO.HHN. ML:1.3 0.000110103925 0.2048 AML other m 2018-10-07T18:52:28.86
IV.FDMO.HHE. ML:1.1 6.952372E-5 0.1024 AML other m 2018-10-07T18:52:29.03
IV.NRCA.HHE. ML:1 4.4743835E-5 0.1664 AML other m 2018-10-07T18:52:31.44
IV.NRCA.HHN. ML:1 5.5491615E-5 0.1024 AML other m 2018-10-07T18:52:30.73
IV.MOMA.HHN. ML:0.8 2.2891285E-5 0.1792 AML other m 2018-10-07T18:52:31.87
IV.MOMA.HHE. ML:1 4.3947275E-5 0.1792 AML other m 2018-10-07T18:52:31.64
IV.GAVE.EHN. ML:1.3 8.3513455E-5 0.2048 AML other m 2018-10-07T18:52:32.12
IV.GAVE.HNE. ML:1.5 0.00013670515 0.1536 AML other m 2018-10-07T18:52:31.49
IV.GAVE.EHE. ML:1.4 0.00011272095 0.1408 AML other m 2018-10-07T18:52:31.41
IV.CSP1.EHE. ML:1 4.1729861E-5 0.1664 AML other m 2018-10-07T18:52:32.51
IV.CSP1.EHN. ML:1.3 8.128787E-5 0.2688 AML other m 2018-10-07T18:52:31.97
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