Earthquake with magnitude of ML 1.0 on date 23-07-2019 and time 02:55:24 (Italy) in region 3 km SE Visso (MC)

A magnitude ML 1.0 earthquake occured in region: 3 km SE Visso (MC), on

  • 23-07-2019 00:55:24 (UTC)
  • 23-07-2019 02:55:24 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.91, 13.11 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
Visso MC 3 1107 1107
Castelsantangelo sul Nera MC 4 281 1388
Ussita MC 5 444 1832
Preci PG 7 724 2556
Norcia PG 13 4957 7513
Monte Cavallo MC 13 145 7658
Bolognola MC 14 142 7800
Fiordimonte MC 15 202 8002
Acquacanina MC 15 121 8123
Fiastra MC 15 559 8682
Sellano PG 15 1079 9761
Pieve Torina MC 16 1458 11219
Pievebovigliana MC 17 866 12085
Montemonaco AP 18 604 12689
Cerreto di Spoleto PG 19 1075 13764
Montefortino FM 19 1178 14942
Montegallo AP 20 523 15465

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
54 Km NE of Terni (111501 inhabitants)
56 Km NW of Teramo (54892 inhabitants)
63 Km E of Perugia (166134 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
95 Km W of Montesilvano (53738 inhabitants)
99 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 1.0 2019-07-23
00:55:24
42.91 13.11 11 2019-07-23
01:06:22
Sala Sismica INGV-Roma 70807611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-23 00:55:24 ± 0.04
Latitude 42.91 ± 0.00
Longitude 13.11 ± 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 70807611

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 235
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 243
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.05576
Epicentral distance of station farthest from the epicenter (degree) 0.42088
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 70807611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-23 01:06:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SMA1.EHZ. 2019-07-23T00:55:36.28 1.0 undecidable manual S 149 0.322 50 0.09 23
IV.MTRA.HNZ. 2019-07-23T00:55:34.21 0.6 undecidable manual S 126 0.2572 50 -0.06 48
IV.GAVE.HNZ. 2019-07-23T00:55:34.78 0.6 undecidable manual S 217 0.2689 50 0.18 47
IV.PF6.EHZ. 2019-07-23T00:55:33.63 0.3 undecidable manual S 15 0.2374 50 -0.04 72
IV.MML1.HNZ. 2019-07-23T00:55:33.31 0.6 undecidable manual S 333 0.2293 50 -0.13 47
IV.EL6.EHZ. 2019-07-23T00:55:33.02 1.0 positive manual P 359 0.4209 50 0.22 22
IV.SMA1.EHZ. 2019-07-23T00:55:31.10 0.3 undecidable manual P 149 0.322 50 -0.01 72
IV.MMO1.EHZ. 2019-07-23T00:55:31.14 0.6 undecidable manual S 93 0.1574 50 -0.16 48
IV.GAVE.HNZ. 2019-07-23T00:55:30.21 0.6 undecidable manual P 217 0.2689 50 0.01 48
IT.MTCL.HGZ. 2019-07-23T00:55:29.90 0.3 undecidable manual S 316 0.1187 130 -0.25 71
IV.MTRA.HNZ. 2019-07-23T00:55:29.94 0.3 undecidable manual P 126 0.2572 50 -0.06 72
IV.PF6.EHZ. 2019-07-23T00:55:29.58 0.3 undecidable manual P 15 0.2374 50 -0.08 72
IV.MML1.HNZ. 2019-07-23T00:55:29.60 0.3 undecidable manual P 333 0.2293 50 0.07 72
IV.MMO1.EHZ. 2019-07-23T00:55:28.34 0.3 undecidable manual P 93 0.1574 50 0.05 73
IV.MC2.EHZ. 2019-07-23T00:55:28.68 0.6 undecidable manual S 87 0.0558 151 0.1 49
IV.NRCA.HHZ. 2019-07-23T00:55:28.50 0.6 undecidable manual S 179 0.0746 143 -0.47 45
IV.FEMA.HNZ. 2019-07-23T00:55:28.88 0.3 undecidable manual S 320 0.071 145 0 75
IV.FEMA.HNZ. 2019-07-23T00:55:27.12 0.1 undecidable manual P 320 0.071 145 0.23 96
IT.MTCL.HGZ. 2019-07-23T00:55:27.65 0.3 undecidable manual P 316 0.1187 130 0.02 74
IV.NRCA.HHZ. 2019-07-23T00:55:26.96 0.1 undecidable manual P 179 0.0746 143 0.02 100
IV.MC2.EHZ. 2019-07-23T00:55:26.94 0.3 undecidable manual P 87 0.0558 151 0.22 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.000191 0.2 AML other m 2019-07-23T00:55:28.69
IV.NRCA.HHE. ML:1.2 0.0001853869 0.1 AML other m 2019-07-23T00:55:28.81
IV.NRCA.HNE. ML:1.3 0.0002355788 0.67 AML other m 2019-07-23T00:55:28.81
IV.NRCA.HNN. ML:1.2 0.00019788165 0.61 AML other m 2019-07-23T00:55:29.04
IV.SMA1.EHE. ML:0.4 1.09547505E-5 1.66 AML other m 2019-07-23T00:55:37.63
IV.SMA1.EHN. ML:0.4 1.03515595E-5 1.02 AML other m 2019-07-23T00:55:36.76
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