Earthquake with magnitude of ML 1.1 on date 20-07-2019 and time 20:29:46 (UTC) in region 4 km S Preci (PG)

A magnitude ML 1.1 earthquake occured in region: 4 km S Preci (PG), on

  • 20-07-2019 20:29:46 (UTC)
  • 20-07-2019 22:29:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.85, 13.04 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
Norcia PG 7 4957 5681
Visso MC 10 1107 6788
Sellano PG 11 1079 7867
Cerreto di Spoleto PG 11 1075 8942
Castelsantangelo sul Nera MC 11 281 9223
Ussita MC 14 444 9667
Cascia PG 14 3217 12884
Monte Cavallo MC 17 145 13029
Vallo di Nera PG 17 364 13393
Poggiodomo PG 17 117 13510

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
58 Km W of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
98 Km N of Guidonia Montecelio (88673 inhabitants)
98 Km W of Montesilvano (53738 inhabitants)
100 Km N of Tivoli (56533 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 2019-07-20
20:29:46
42.85 13.04 10 2019-07-20
20:37:37
Sala Sismica INGV-Roma 70746041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-20 20:29:46 ± 0.06
Latitude 42.85 ± 0.00
Longitude 13.04 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 70746041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 335
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48384
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 70746041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-20 20:37:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IT.VNF1.HGZ. 2019-07-20T20:30:37.65 3.0 undecidable manual S 0.08 0
IV.LAV9.HNZ. 2019-07-20T20:30:06.14 3.0 undecidable manual P -3.83 0
IV.EL6.EHZ. 2019-07-20T20:30:03.83 0.6 undecidable manual S 5 0.4838 50 0.65 40
IV.MF5.EHZ. 2019-07-20T20:29:59.49 0.6 undecidable manual S 65 0.3363 50 0.69 41
IV.RM33.EHZ. 2019-07-20T20:29:59.69 0.6 undecidable manual S 159 0.3606 50 0.17 47
IV.MOMA.HHE. 2019-07-20T20:29:59.37 0.6 undecidable manual S 263 0.3489 50 0.19 47
IV.ASSB.HHZ. 2019-07-20T20:29:58.56 0.6 undecidable manual S 305 0.3417 50 -0.41 45
IV.ARRO.EHZ. 2019-07-20T20:29:58.95 0.6 undecidable manual S 217 0.3363 50 0.16 47
IV.SMA1.EHZ. 2019-07-20T20:29:57.69 0.6 undecidable manual S 135 0.3049 50 -0.18 47
IV.MTRA.EHZ. 2019-07-20T20:29:56.74 0.6 undecidable manual S 109 0.2752 50 -0.24 47
IV.EL6.EHZ. 2019-07-20T20:29:55.79 0.1 undecidable manual P 5 0.4838 50 -0.17 91
IV.LNSS.HHZ. 2019-07-20T20:29:55.80 0.6 undecidable manual S 180 0.2437 50 -0.27 47
IV.SNTG.HHZ. 2019-07-20T20:29:54.52 0.1 undecidable manual P 350 0.4146 50 -0.25 91
IV.MOMA.HHE. 2019-07-20T20:29:54.33 0.6 undecidable manual P 263 0.3489 50 0.68 41
IV.GAVE.EHZ. 2019-07-20T20:29:54.18 0.6 undecidable manual S 215 0.1889 115 0.04 50
IV.MMO1.EHZ. 2019-07-20T20:29:54.71 0.6 undecidable manual S 76 0.2149 112 -0.34 46
IV.ASSB.HHZ. 2019-07-20T20:29:53.33 0.3 positive manual P 305 0.3417 50 -0.21 70
IV.FDMO.HHZ. 2019-07-20T20:29:53.97 0.6 undecidable manual S 10 0.1925 115 -0.29 47
IV.ARRO.EHZ. 2019-07-20T20:29:53.28 1.0 undecidable manual P 217 0.3363 50 -0.15 24
IV.MF5.EHZ. 2019-07-20T20:29:53.72 0.6 undecidable manual P 65 0.3363 50 0.29 46
IV.SMA1.EHZ. 2019-07-20T20:29:53.06 1.0 undecidable manual P 135 0.3049 50 0.17 24
IV.RM33.EHZ. 2019-07-20T20:29:53.77 1.0 undecidable manual P 159 0.3606 50 -0.08 24
IV.MTRA.EHZ. 2019-07-20T20:29:52.26 0.1 undecidable manual P 109 0.2752 50 -0.12 96
IV.MC2.EHZ. 2019-07-20T20:29:52.28 0.6 undecidable manual S 59 0.125 125 0.28 48
IV.MMO1.EHZ. 2019-07-20T20:29:51.18 0.1 undecidable manual P 76 0.2149 112 -0.09 98
IV.LNSS.HHZ. 2019-07-20T20:29:51.69 0.1 undecidable manual P 180 0.2437 50 -0.17 96
IV.FDMO.HHZ. 2019-07-20T20:29:50.74 0.1 positive manual P 10 0.1925 115 -0.07 99
IV.NRCA.HHZ. 2019-07-20T20:29:50.00 0.3 undecidable manual S 104 0.054 149 -0.1 76
IV.GAVE.EHZ. 2019-07-20T20:29:50.88 0.1 positive manual P 215 0.1889 115 0.14 97
IV.MC2.EHZ. 2019-07-20T20:29:49.78 0.3 positive manual P 59 0.125 125 0.27 72
IV.NRCA.HHZ. 2019-07-20T20:29:48.55 0.1 undecidable manual P 104 0.054 149 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:1.2 0.000115 0.12 AML other m 2019-07-20T20:29:54.45
IV.FDMO.HHN. ML:1.1 7.925E-5 0.22 AML other m 2019-07-20T20:29:54.57
IV.GAVE.EHN. ML:1.3 0.0001505 0.16 AML other m 2019-07-20T20:29:55.09
IV.GAVE.EHE. ML:1.2 0.0001215 0.44 AML other m 2019-07-20T20:29:56.10
IV.LNSS.HHE. ML:1.3 0.00010225 0.14 AML other m 2019-07-20T20:29:56.20
IV.LNSS.HHN. ML:1.4 0.0001365 0.16 AML other m 2019-07-20T20:29:56.32
IV.MTRA.EHE. ML:1.4 0.000131 0.3 AML other m 2019-07-20T20:29:57.27
IV.MTRA.EHN. ML:1.4 0.00011095 0.3 AML other m 2019-07-20T20:29:57.28
IV.ASSB.HHN. ML:1 4.15E-5 0.18 AML other m 2019-07-20T20:29:58.88
IV.ASSB.HHE. ML:1.1 4.325E-5 1.4 AML other m 2019-07-20T20:29:58.19
IV.ARRO.EHE. ML:0.8 2.67E-5 0.86 AML other m 2019-07-20T20:29:59.57
IV.ARRO.EHN. ML:0.8 2.43E-5 0.34 AML other m 2019-07-20T20:30:00.22
IV.SNTG.HHN. ML:0.8 1.895E-5 0.62 AML other m 2019-07-20T20:30:01.98
IV.SNTG.HHE. ML:0.9 2.425E-5 1.68 AML other m 2019-07-20T20:30:02.11
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