Earthquake with magnitude of ML 0.7 on date 20-10-2019 and time 21:04:06 (UTC) in region 7 km SW Preci (PG)

A magnitude ML 0.7 earthquake occured in region: 7 km SW Preci (PG), on

  • 20-10-2019 21:04:06 (UTC)
  • 20-10-2019 23:04:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.83, 13.01 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 7 724 724
Cerreto di Spoleto PG 7 1075 1799
Norcia PG 8 4957 6756
Sellano PG 10 1079 7835
Cascia PG 12 3217 11052
Vallo di Nera PG 13 364 11416
Visso MC 14 1107 12523
Poggiodomo PG 14 117 12640
Castelsantangelo sul Nera MC 14 281 12921
Ussita MC 17 444 13365
Sant'Anatolia di Narco PG 17 564 13929
Campello sul Clitunno PG 19 2442 16371
Monte Cavallo MC 19 145 16516
Scheggino PG 19 461 16977
Monteleone di Spoleto PG 20 599 17576

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km SE of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
59 Km SE of Perugia (166134 inhabitants)
60 Km W of Teramo (54892 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
87 Km NE of Viterbo (67173 inhabitants)
95 Km N of Guidonia Montecelio (88673 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
100 Km W of Montesilvano (53738 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 2019-10-20
21:04:06
42.83 13.01 10 2019-10-20
21:11:42
Sala Sismica INGV-Roma 73362031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-20 21:04:06 ± 0.11
Latitude 42.83 ± 0.00
Longitude 13.01 ± 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 73362031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 729
Semi-minor axis of confidence ellipse (meter) 143
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 730
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 163
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.07914
Epicentral distance of station farthest from the epicenter (degree) 0.35163
Number of stations at which the event was observed 9
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 8
Type of magnitude ML
Reference to an origin 73362031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-20 21:11:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RM33.EHZ. 2019-10-20T21:04:19.79 0.6 undecidable manual S 154 0.3516 50 0.1 48
IV.CSP1.EHZ. 2019-10-20T21:04:18.44 0.6 undecidable manual S 28 0.3031 50 0.19 47
IV.MMO1.EHZ. 2019-10-20T21:04:16.17 0.6 undecidable manual S 72 0.2455 50 -0.38 45
IV.FDMO.HHZ. 2019-10-20T21:04:15.52 0.1 undecidable manual S 16 0.2185 50 -0.24 93
IV.LNSS.HHZ. 2019-10-20T21:04:15.85 0.3 undecidable manual S 174 0.2239 50 -0.06 72
IV.RM33.EHZ. 2019-10-20T21:04:14.44 1.0 positive manual P 154 0.3516 50 0.25 23
IV.CESI.HNZ. 2019-10-20T21:04:14.71 0.6 undecidable manual S 337 0.1943 116 -0.27 47
IT.MTCL.HGZ. 2019-10-20T21:04:13.91 0.6 undecidable manual S 358 0.1682 119 -0.18 48
IV.MC2.EHZ. 2019-10-20T21:04:13.84 0.1 undecidable manual S 57 0.1583 121 0.09 96
IV.CSP1.EHZ. 2019-10-20T21:04:13.33 0.1 undecidable manual P 28 0.3031 50 -0.03 95
IV.MMO1.EHZ. 2019-10-20T21:04:12.33 0.1 undecidable manual P 72 0.2455 50 -0.05 96
IV.FDMO.HHZ. 2019-10-20T21:04:11.72 0.1 undecidable manual P 16 0.2185 50 -0.2 94
IV.LNSS.HHZ. 2019-10-20T21:04:11.93 0.1 undecidable manual P 174 0.2239 50 -0.08 96
IV.NRCA.HHZ. 2019-10-20T21:04:11.34 0.1 undecidable manual S 84 0.0791 140 -0.04 100
IT.MTCL.HGZ. 2019-10-20T21:04:11.89 0.1 undecidable manual P 358 0.1682 119 0.94 75
IV.CESI.HNZ. 2019-10-20T21:04:11.41 0.1 undecidable manual P 337 0.1943 116 -0.06 97
IV.MC2.EHZ. 2019-10-20T21:04:10.96 0.1 undecidable manual P 57 0.1583 121 0.2 95
IV.NRCA.HHZ. 2019-10-20T21:04:09.52 0.1 undecidable manual P 84 0.0791 140 0.13 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1 0.000135 0.68 AML other m 2019-10-20T21:04:11.41
IV.NRCA.HHE. ML:0.9 0.000115 0.16 AML other m 2019-10-20T21:04:11.46
IV.FDMO.HHN. ML:0.7 2.755E-5 0.16 AML other m 2019-10-20T21:04:15.97
IV.FDMO.HHE. ML:0.8 3.895E-5 0.12 AML other m 2019-10-20T21:04:16.05
IV.CSP1.EHE. ML:0.6 1.35531E-5 1.4976 AML other m 2019-10-20T21:04:19.01
IV.CSP1.EHN. ML:0.8 2.729944E-5 1.6896 AML other m 2019-10-20T21:04:18.48
IV.RM33.EHE. ML:0.6 1.2605725E-5 0.2432 AML other m 2019-10-20T21:04:21.93
IV.RM33.EHN. ML:0.4 1.15754695E-5 0.5632 AML other m 2019-10-20T21:04:19.58
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