Earthquake with magnitude of ML 1.1 on date 31-07-2019 and time 19:08:04 (Italy) in region 1 km E Visso (MC)

A magnitude ML 1.1 earthquake occured in region: 1 km E Visso (MC), on

  • 31-07-2019 17:08:04 (UTC)
  • 31-07-2019 19:08:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.93, 13.1 at 12 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
Visso MC 1 1107 1107
Ussita MC 3 444 1551
Castelsantangelo sul Nera MC 6 281 1832
Preci PG 8 724 2556
Monte Cavallo MC 11 145 2701
Fiordimonte MC 12 202 2903
Bolognola MC 12 142 3045
Fiastra MC 13 559 3604
Acquacanina MC 13 121 3725
Pieve Torina MC 14 1458 5183
Pievebovigliana MC 15 866 6049
Sellano PG 15 1079 7128
Norcia PG 15 4957 12085
Muccia MC 18 915 13000
Montemonaco AP 19 604 13604
Montefortino FM 19 1178 14782
Cerreto di Spoleto PG 20 1075 15857
Sarnano MC 20 3264 19121

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
55 Km NE of Terni (111501 inhabitants)
58 Km NW of Teramo (54892 inhabitants)
61 Km E of Perugia (166134 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
97 Km W of Montesilvano (53738 inhabitants)
100 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 1.1 2019-07-31
17:08:04
42.93 13.1 12 2019-07-31
17:16:09
Sala Sismica INGV-Roma 71067041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-31 17:08:04 ± 0.06
Latitude 42.93 ± 0.00
Longitude 13.10 ± 0.01
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 71067041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 715
Semi-minor axis of confidence ellipse (meter) 200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 253
Circular confidence region, given by single value of horizontal uncertainty (meter) 720
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 16
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
Epicentral distance of station farthest from the epicenter (degree) 0.47754
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 71067041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-31 17:16:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2019-07-31T17:08:14.15 0.3 undecidable manual P 130 0.4775 91 0.04 69
IV.MML1.EHE. 2019-07-31T17:08:13.23 0.6 undecidable manual S 332 0.2077 95 0.11 49
IV.ASSB.HHZ. 2019-07-31T17:08:11.90 3.0 undecidable manual P 0.26 0
IV.FDMO.HHZ. 2019-07-31T17:08:10.09 0.3 undecidable manual S 353 0.107 118 -0.15 73
IV.MML1.EHE. 2019-07-31T17:08:09.60 0.3 undecidable manual P 332 0.2077 95 0.12 72
IT.MTCL.HGZ. 2019-07-31T17:08:09.94 0.3 undecidable manual S 310 0.0998 121 -0.12 73
IV.PF6.EHE. 2019-07-31T17:08:09.38 0.1 undecidable manual P 17 0.2176 95 -0.28 93
IV.FEMA.HNE. 2019-07-31T17:08:09.10 0.3 undecidable manual S 308 0.0513 147 0.07 75
IV.MC2.EHZ. 2019-07-31T17:08:09.19 0.6 undecidable manual S 107 0.0648 139 -0.07 50
IV.NRCA.HHZ. 2019-07-31T17:08:09.62 0.6 undecidable manual S 176 0.0971 123 -0.36 47
IV.GUMA.HHZ. 2019-07-31T17:08:09.65 0.3 undecidable manual P 52 0.214 95 0.05 73
IV.MMO1.EHZ. 2019-07-31T17:08:08.66 3.0 negative manual P 1 0
IV.CESI.HHZ. 2019-07-31T17:08:08.91 0.3 positive manual P 297 0.1646 99 0.16 73
IV.MNTT.EHZ. 2019-07-31T17:08:08.85 3.0 undecidable manual P 0
IV.MC2.EHZ. 2019-07-31T17:08:07.29 0.1 undecidable manual P 107 0.0648 139 0.04 100
IV.NRCA.HHZ. 2019-07-31T17:08:07.74 0.3 undecidable manual P 176 0.0971 123 0.07 74
IT.MTCL.HGZ. 2019-07-31T17:08:07.76 0.1 undecidable manual P 310 0.0998 121 0.05 100
IV.FDMO.HHZ. 2019-07-31T17:08:07.84 0.3 undecidable manual P 353 0.107 118 0.02 75
IV.FEMA.HNE. 2019-07-31T17:08:07.28 0.1 undecidable manual P 308 0.0513 147 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.2 0.000163724 0.128 AML other m 2019-07-31T17:08:10.34
IV.NRCA.HHN. ML:1.2 0.00017262525 0.128 AML other m 2019-07-31T17:08:11.23
IV.NRCA.HNE. ML:1.1 0.00014542175 0.1536 AML other m 2019-07-31T17:08:10.40
IV.NRCA.HNN. ML:1.2 0.00016210787 0.128 AML other m 2019-07-31T17:08:09.73
IV.MNTT.EHN. ML:2 0.00031613685 0.3328 AML other m 2019-07-31T17:08:15.24
IV.CESI.HHE. ML:0.9 6.579846E-5 0.1152 AML other m 2019-07-31T17:08:12.14
IV.CESI.HHN. ML:0.9 5.961291E-5 0.1408 AML other m 2019-07-31T17:08:12.09
IV.GUMA.HNE. ML:1.3 0.00012932264 0.4736 AML other m 2019-07-31T17:08:15.64
IV.GUMA.HHE. ML:1 6.734529E-5 0.2816 AML other m 2019-07-31T17:08:17.02
IV.GUMA.HHN. ML:1.3 0.00012834815 0.2944 AML other m 2019-07-31T17:08:13.89
IV.ASSB.HHE. ML:0.8 2.430928E-5 0.128 AML other m 2019-07-31T17:08:19.31
IV.ASSB.HHN. ML:0.8 2.5129295E-5 0.1536 AML other m 2019-07-31T17:08:18.11
IV.TERO.HHE. ML:0.6 1.0558985E-5 0.1664 AML other m 2019-07-31T17:08:21.65
IV.TERO.HHN. ML:0.6 1.0049579E-5 0.0768 AML other m 2019-07-31T17:08:23.01
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