Earthquake with magnitude of ML 1.1 on date 20-09-2019 and time 02:26:22 (Italy) in region 2 km S Preci (PG)

A magnitude ML 1.1 earthquake occured in region: 2 km S Preci (PG), on

  • 20-09-2019 00:26:22 (UTC)
  • 20-09-2019 02:26:22 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.86, 13.04 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 2 724 724
Norcia PG 8 4957 5681
Visso MC 9 1107 6788
Castelsantangelo sul Nera MC 10 281 7069
Sellano PG 10 1079 8148
Cerreto di Spoleto PG 11 1075 9223
Ussita MC 12 444 9667
Monte Cavallo MC 16 145 9812
Cascia PG 16 3217 13029
Vallo di Nera PG 18 364 13393
Poggiodomo PG 18 117 13510

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
46 Km NE of Terni (111501 inhabitants)
58 Km W of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
93 Km SW of Ancona (100861 inhabitants)
98 Km W of Montesilvano (53738 inhabitants)
99 Km N of Guidonia Montecelio (88673 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 2019-09-20
00:26:22
42.86 13.04 11 2019-09-20
00:39:53
Sala Sismica INGV-Roma 72574931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-20 00:26:22 ± 0.04
Latitude 42.86 ± 0.00
Longitude 13.04 ± 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 72574931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 295
Semi-minor axis of confidence ellipse (meter) 221
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.47394
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 72574931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-20 00:39:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2019-09-20T00:26:39.13 0.3 undecidable manual S 120 0.4739 50 0.15 69
IV.MTRA.EHE. 2019-09-20T00:26:33.22 0.3 undecidable manual S 111 0.2779 50 0.05 73
IV.TERO.HHZ. 2019-09-20T00:26:32.03 0.3 undecidable manual P 120 0.4739 50 0.03 70
IV.LNSS.HHE. 2019-09-20T00:26:32.54 0.3 undecidable manual S 181 0.2554 50 0.04 73
IV.MMO1.EHZ. 2019-09-20T00:26:31.02 0.1 undecidable manual S 79 0.2113 50 -0.19 96
IV.GAVE.EHZ. 2019-09-20T00:26:30.72 0.3 undecidable manual S 214 0.1988 50 -0.12 73
IV.FDMO.HHZ. 2019-09-20T00:26:30.12 0.3 undecidable manual S 10 0.1808 50 -0.19 72
IV.CESI.HHE. 2019-09-20T00:26:30.12 0.6 undecidable manual S 325 0.179 50 -0.12 49
IV.SMA1.EHE. 2019-09-20T00:26:29.47 0.3 undecidable manual P 137 0.3121 50 0.23 70
IV.LNSS.HHE. 2019-09-20T00:26:28.27 0.1 undecidable manual P 181 0.2554 50 0.01 98
IV.MML1.EHE. 2019-09-20T00:26:28.65 0.3 undecidable manual P 348 0.2608 50 0.29 69
IT.MTCL.HGE. 2019-09-20T00:26:28.86 0.3 undecidable manual S 347 0.1394 125 -0.2 73
IV.MTRA.EHE. 2019-09-20T00:26:28.57 0.1 undecidable manual P 111 0.2779 50 -0.08 97
IV.MC2.EHZ. 2019-09-20T00:26:28.59 0.1 undecidable manual S 63 0.1187 130 0.16 98
IV.T1299.EHE. 2019-09-20T00:26:28.52 0.3 undecidable manual P 142 0.2842 50 -0.24 70
IV.FDMO.HHZ. 2019-09-20T00:26:27.03 0.6 positive manual P 10 0.1808 50 0.04 50
IV.CESI.HHE. 2019-09-20T00:26:27.02 0.3 undecidable manual P 325 0.179 50 0.07 74
IV.GAVE.EHZ. 2019-09-20T00:26:27.41 0.6 undecidable manual P 214 0.1988 50 0.11 49
IV.MMO1.EHZ. 2019-09-20T00:26:27.45 0.6 undecidable manual P 79 0.2113 50 -0.06 49
IV.MC2.EHZ. 2019-09-20T00:26:26.18 0.6 negative manual P 63 0.1187 130 0.27 48
IV.NRCA.HHZ. 2019-09-20T00:26:26.60 0.1 undecidable manual S 115 0.0576 150 -0.27 97
IT.MTCL.HGE. 2019-09-20T00:26:26.31 0.1 undecidable manual P 347 0.1394 125 0.04 100
IV.FEMA.HNE. 2019-09-20T00:26:25.76 0.1 undecidable manual P 2 0.1043 134 0.1 99
IV.NRCA.HHZ. 2019-09-20T00:26:25.05 0.6 undecidable manual P 115 0.0576 150 0.04 51
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.3 0.00027223055 0.12 AML other m 2019-09-20T00:26:26.82
IV.NRCA.HHN. ML:1.4 0.00036680475 0.12 AML other m 2019-09-20T00:26:26.72
IV.NRCA.HNE. ML:1.2 0.00025551895 0.11 AML other m 2019-09-20T00:26:26.87
IV.NRCA.HNN. ML:1.4 0.0003353053 0.14 AML other m 2019-09-20T00:26:26.72
IV.FDMO.HHE. ML:0.6 2.916208E-5 0.2 AML other m 2019-09-20T00:26:30.61
IV.FDMO.HHN. ML:0.5 2.6102625E-5 0.1 AML other m 2019-09-20T00:26:30.45
IV.GAVE.EHE. ML:1 6.503154E-5 0.26 AML other m 2019-09-20T00:26:31.36
IV.GAVE.EHN. ML:0.9 5.40426425E-5 0.22 AML other m 2019-09-20T00:26:30.98
IV.GAVE.HNE. ML:1.3 0.00014120205 0.94 AML other m 2019-09-20T00:26:30.39
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