INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of ML 0.7 on date 09-10-2018 and time 21:25:20 (Italy) in region 6 km NW Preci (PG)

A magnitude ML 0.7 earthquake occured in region: 6 km NW Preci (PG), on

  • 09-10-2018 19:25:20 (UTC)
  • 09-10-2018 21:25:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.93, 13 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
Visso MC 7 1107 1831
Monte Cavallo MC 7 145 1976
Sellano PG 8 1079 3055
Ussita MC 11 444 3499
Castelsantangelo sul Nera MC 13 281 3780
Pieve Torina MC 14 1458 5238
Cerreto di Spoleto PG 14 1075 6313
Fiordimonte MC 14 202 6515
Pievebovigliana MC 16 866 7381
Serravalle di Chienti MC 17 1070 8451
Norcia PG 17 4957 13408
Fiastra MC 17 559 13967
Muccia MC 18 915 14882
Acquacanina MC 18 121 15003
Bolognola MC 20 142 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
54 Km E of Perugia (166134 inhabitants)
65 Km W of Teramo (54892 inhabitants)
72 Km NW of L'Aquila (69753 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 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 0.7 2018-10-09
19:25:20
42.93 13 11 2018-10-09
19:36:33
Sala Sismica INGV-Roma 61777331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-09 19:25:20 ± 0.04
Latitude 42.93 ± 0.00
Longitude 13.00 ± 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 61777331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 342
Semi-minor axis of confidence ellipse (meter) 218
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 86
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.40649
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 61777331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-09 19:36:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.T1299.EHZ. 2018-10-09T19:25:57.48 3.0 undecidable manual S 0
IV.T1299.EHZ. 2018-10-09T19:25:55.88 3.0 undecidable manual P 0
IV.EL6.EHZ. 2018-10-09T19:25:35.01 0.6 undecidable manual S 10 0.4065 50 0.36 44
IV.ASSB.HHE. 2018-10-09T19:25:30.63 0.6 undecidable manual S 294 0.2761 50 -0.15 47
IV.GAVE.HNZ. 2018-10-09T19:25:30.08 0.6 undecidable manual S 199 0.2491 50 0.1 48
IV.EL6.EHZ. 2018-10-09T19:25:28.53 0.1 undecidable manual P 10 0.4065 50 0.02 94
IV.MML1.HNN. 2018-10-09T19:25:27.94 0.3 undecidable manual S 353 0.1862 50 -0.17 72
IV.ASSB.HHE. 2018-10-09T19:25:26.23 0.6 undecidable manual P 294 0.2761 50 -0.05 48
IV.FDMO.HHZ. 2018-10-09T19:25:26.09 0.6 undecidable manual S 30 0.1241 129 -0.16 48
IV.NRCA.HHE. 2018-10-09T19:25:26.09 0.6 undecidable manual S 139 0.125 128 -0.19 48
IV.CSP1.EHZ. 2018-10-09T19:25:25.31 0.3 positive manual P 42 0.2194 50 0 74
IV.CESI.HHZ. 2018-10-09T19:25:25.66 0.6 undecidable manual S 317 0.1052 133 -0.04 50
IV.GAVE.HNZ. 2018-10-09T19:25:25.81 0.1 undecidable manual P 199 0.2491 50 0 98
IV.MML1.HNN. 2018-10-09T19:25:24.65 0.3 undecidable manual P 353 0.1862 50 -0.09 73
IV.FEMA.HNE. 2018-10-09T19:25:24.36 0.3 undecidable manual S 45 0.0477 154 -0.01 76
IV.NRCA.HHE. 2018-10-09T19:25:23.68 0.1 undecidable manual P 139 0.125 128 0 100
IV.CESI.HHZ. 2018-10-09T19:25:23.48 0.1 undecidable manual P 317 0.1052 133 0.14 98
IV.FDMO.HHZ. 2018-10-09T19:25:23.67 0.1 undecidable manual P 30 0.1241 129 0.01 100
IV.FEMA.HNE. 2018-10-09T19:25:22.72 0.3 undecidable manual P 45 0.0477 154 0.14 74
IV.FOSV.EHZ. 2018-10-09T19:25:17.74 3.0 undecidable manual P -0.02 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.6 3.74E-5 0.18 AML other m 2018-10-09T19:25:26.20
IV.CESI.HHN. ML:0.7 4.89E-5 1.58 AML other m 2018-10-09T19:25:26.86
IV.FDMO.HHE. ML:0.6 4.125E-5 0.38 AML other m 2018-10-09T19:25:26.51
IV.CESI.HHE. ML:0.5 3.44E-5 0.56 AML other m 2018-10-09T19:25:25.98
IV.EL6.EHE. ML:0.8 1.90823625E-5 0.8192 AML other m 2018-10-09T19:25:35.49
IV.EL6.EHN. ML:1.1 3.514955E-5 0.1792 AML other m 2018-10-09T19:25:36.04
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