Earthquake with magnitude of ML 1.0 on date 17-10-2019 and time 04:39:32 (Italy) in region 2 km E San Lorenzo Nuovo (VT)

A magnitude ML 1.0 earthquake occured in region: 2 km E San Lorenzo Nuovo (VT), on

  • 17-10-2019 02:39:32 (UTC)
  • 17-10-2019 04:39:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.68, 11.93 at 13 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
San Lorenzo Nuovo VT 2 2091 2091
Grotte di Castro VT 5 2683 4774
Castel Giorgio TR 5 2131 6905
Bolsena VT 7 3991 10896
Gradoli VT 7 1353 12249
Acquapendente VT 8 5506 17755
Onano VT 9 995 18750
Castel Viscardo TR 10 2938 21688
Latera VT 10 836 22524
Proceno VT 11 557 23081
Porano TR 14 1966 25047
Allerona TR 15 1794 26841
Capodimonte VT 15 1731 28572
Orvieto TR 15 20630 49202
Bagnoregio VT 15 3650 52852
Valentano VT 16 2868 55720
Lubriano VT 16 909 56629
Marta VT 17 3499 60128
Sorano GR 18 3428 63556
Montefiascone VT 18 13432 76988

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of Viterbo (67173 inhabitants)
60 Km SW of Perugia (166134 inhabitants)
60 Km W of Terni (111501 inhabitants)
67 Km N of Civitavecchia (52991 inhabitants)
67 Km E of Grosseto (82087 inhabitants)
70 Km W of Foligno (57155 inhabitants)
86 Km SE of Siena (53903 inhabitants)
87 Km S of Arezzo (99543 inhabitants)
99 Km NW of Roma (2864731 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 2019-10-17
02:39:32
42.69 11.93 13 2019-10-17
03:01:45
Sala Sismica INGV-Roma 73297131
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-17 02:39:32 ± 0.33
Latitude 42.69 ± 0.01
Longitude 11.93 ± 0.01
Depth (km) 13 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 73297131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1565
Semi-minor axis of confidence ellipse (meter) 1006
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 314
Circular confidence region, given by single value of horizontal uncertainty (meter) 1560
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 201
Number of associated phases, regardless of their use for origin computation 9
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2644
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 73297131
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-17 03:01:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RCAV.EHZ. 2019-10-17T02:39:53.45 3.0 undecidable manual P -0.02 0
IV.MGAB.HHZ. 2019-10-17T02:39:43.28 0.6 undecidable manual S 31 0.2644 96 0.24 64
TV.SF04.EHZ. 2019-10-17T02:39:42.40 0.6 undecidable manual S 307 0.2482 96 -0.16 65
IV.SACS.HHZ. 2019-10-17T02:39:40.23 0.6 undecidable manual S 355 0.1646 105 0.11 67
IV.MGAB.HHZ. 2019-10-17T02:39:38.38 0.3 undecidable manual P 31 0.2644 96 -0.3 94
IV.LATE.HHZ. 2019-10-17T02:39:38.65 0.3 undecidable manual S 232 0.116 119 -0.14 100
TV.SF04.EHZ. 2019-10-17T02:39:38.57 0.3 undecidable manual P 307 0.2482 96 0.17 97
IV.SACS.HHZ. 2019-10-17T02:39:36.88 0.3 positive manual P 355 0.1646 105 -0.12 100
IV.LATE.HHZ. 2019-10-17T02:39:36.48 0.3 undecidable manual P 232 0.116 119 0.25 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACS.HHE. ML:0.9 6.67E-5 0.46 AML other m 2019-10-17T02:39:40.37
IV.SACS.HHN. ML:0.9 5.335E-5 0.48 AML other m 2019-10-17T02:39:41.17
IV.LATE.HHE. ML:0.9 8.155E-5 0.64 AML other m 2019-10-17T02:39:42.16
IV.LATE.HHN. ML:1.2 0.0001455 0.64 AML other m 2019-10-17T02:39:43.87
IV.MGAB.HHE. ML:1 4.75E-5 1.2 AML other m 2019-10-17T02:39:44.37
IV.MGAB.HHN. ML:1 4.44E-5 0.54 AML other m 2019-10-17T02:39:45.40
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