Earthquake with magnitude of ML 0.8 on date 20-07-2019 and time 03:17:58 (Italy) in region 4 km NW Preci (PG)

A magnitude ML 0.8 earthquake occured in region: 4 km NW Preci (PG), on

  • 20-07-2019 01:17:58 (UTC)
  • 20-07-2019 03:17:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9, 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
Preci PG 4 724 724
Sellano PG 6 1079 1803
Visso MC 8 1107 2910
Monte Cavallo MC 10 145 3055
Cerreto di Spoleto PG 11 1075 4130
Ussita MC 12 444 4574
Castelsantangelo sul Nera MC 13 281 4855
Norcia PG 14 4957 9812
Pieve Torina MC 16 1458 11270
Fiordimonte MC 17 202 11472
Vallo di Nera PG 18 364 11836
Pievebovigliana MC 19 866 12702
Serravalle di Chienti MC 19 1070 13772
Fiastra MC 20 559 14331

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
55 Km E of Perugia (166134 inhabitants)
64 Km W of Teramo (54892 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
91 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 0.8 2019-07-20
01:17:58
42.9 13 10 2019-07-20
01:40:59
Sala Sismica INGV-Roma 70724131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-20 01:17:58 ± 0.1
Latitude 42.90 ± 0.01
Longitude 13.00 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 70724131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 695
Semi-minor axis of confidence ellipse (meter) 490
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 168
Circular confidence region, given by single value of horizontal uncertainty (meter) 690
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.43257
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 70724131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-20 01:40:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
TV.SF04.EHZ. 2019-07-20T01:18:31.11 3.0 undecidable manual S -2.33 0
IV.EL6.EHZ. 2019-07-20T01:18:14.42 0.1 undecidable manual S 10 0.4326 50 0.04 93
IV.MF5.EHZ. 2019-07-20T01:18:12.48 0.1 undecidable manual S 76 0.3471 50 0.63 82
IV.MOMA.HHZ. 2019-07-20T01:18:11.61 0.1 undecidable manual S 253 0.3292 50 0.29 91
IV.SNTG.HHZ. 2019-07-20T01:18:11.92 0.1 undecidable manual S 353 0.3543 50 -0.14 93
IV.ASSB.HHZ. 2019-07-20T01:18:09.80 0.1 undecidable manual S 299 0.2851 50 -0.21 93
IV.MMO1.EHZ. 2019-07-20T01:18:08.02 0.1 undecidable manual S 91 0.2401 50 -0.64 83
IV.EL6.EHZ. 2019-07-20T01:18:07.73 0.6 negative manual P 10 0.4326 50 -0.09 46
IV.GAVE.EHZ. 2019-07-20T01:18:07.94 0.1 undecidable manual S 200 0.2239 112 -0.21 94
IV.MOMA.HHZ. 2019-07-20T01:18:06.44 0.6 positive manual P 253 0.3292 50 0.39 44
IV.SNTG.HHZ. 2019-07-20T01:18:06.67 1.0 undecidable manual P 353 0.3543 50 0.19 23
IV.MF5.EHZ. 2019-07-20T01:18:06.69 1.0 positive manual P 76 0.3471 50 0.34 22
IV.ASSB.HHZ. 2019-07-20T01:18:04.99 0.6 undecidable manual P 299 0.2851 50 -0.31 46
IV.NRCA.HHZ. 2019-07-20T01:18:04.28 0.1 undecidable manual S 129 0.1088 130 -0.02 100
IV.GAVE.EHZ. 2019-07-20T01:18:04.25 0.3 positive manual P 200 0.2239 112 0.03 73
IV.MMO1.EHZ. 2019-07-20T01:18:04.36 0.6 negative manual P 91 0.2401 50 -0.16 47
IV.CESI.HHZ. 2019-07-20T01:18:02.40 1.0 undecidable manual P 326 0.1232 126 0.15 24
IV.NRCA.HHZ. 2019-07-20T01:18:02.16 0.1 negative manual P 129 0.1088 130 0.16 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.5 3.04E-5 0.76 AML other m 2019-07-20T01:18:02.68
IV.NRCA.HHN. ML:1.1 0.0001545 0.18 AML other m 2019-07-20T01:18:04.35
IV.NRCA.HHE. ML:1.1 0.000147 0.06 AML other m 2019-07-20T01:18:04.56
IV.CESI.HHN. ML:0.6 4.185E-5 0.22 AML other m 2019-07-20T01:18:05.33
IV.GAVE.EHE. ML:1.2 9.27E-5 0.16 AML other m 2019-07-20T01:18:08.31
IV.GAVE.EHN. ML:1 6.19E-5 0.18 AML other m 2019-07-20T01:18:09.11
IV.ASSB.HHE. ML:0.7 2.465E-5 0.7 AML other m 2019-07-20T01:18:10.00
IV.ASSB.HHN. ML:0.6 2.095E-5 0.74 AML other m 2019-07-20T01:18:10.50
IV.MOMA.HHN. ML:0.6 1.71E-5 0.64 AML other m 2019-07-20T01:18:12.07
IV.SNTG.HHE. ML:0.6 1.51E-5 0.8 AML other m 2019-07-20T01:18:12.44
IV.SNTG.HHN. ML:0.6 1.52E-5 0.9 AML other m 2019-07-20T01:18:12.00
IV.MOMA.HHE. ML:0.7 1.75E-5 0.18 AML other m 2019-07-20T01:18:12.92
TV.SF04.EHN. ML:1.4 1.805E-5 0.42 AML other m 2019-07-20T01:18:40.02
TV.SF04.EHE. ML:1.2 1.35E-5 0.42 AML other m 2019-07-20T01:18:45.84
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