Earthquake with magnitude of ML 1.2 on date 13-09-2019 and time 20:09:46 (Italy) in region 5 km N Proceno (VT)

A magnitude ML 1.2 earthquake occured in region: 5 km N Proceno (VT), on

  • 13-09-2019 18:09:46 (UTC)
  • 13-09-2019 20:09:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8, 11.82 at 8 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
Proceno VT 5 557 557
Acquapendente VT 8 5506 6063
San Casciano dei Bagni SI 9 1632 7695
Castell'Azzara GR 11 1476 9171
Radicofani SI 11 1097 10268
Piancastagnaio SI 12 4230 14498
Onano VT 12 995 15493
Allerona TR 13 1794 17287
Abbadia San Salvatore SI 14 6444 23731
San Lorenzo Nuovo VT 15 2091 25822
Grotte di Castro VT 15 2683 28505
Castel Viscardo TR 16 2938 31443
Sorano GR 16 3428 34871
Castel Giorgio TR 17 2131 37002
Fabro TR 17 2876 39878
Gradoli VT 18 1353 41231
Cetona SI 19 2755 43986
Santa Fiora GR 19 2622 46608
Latera VT 20 836 47444

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km NW of Viterbo (67173 inhabitants)
57 Km SW of Perugia (166134 inhabitants)
58 Km E of Grosseto (82087 inhabitants)
70 Km SE of Siena (53903 inhabitants)
73 Km W of Terni (111501 inhabitants)
74 Km S of Arezzo (99543 inhabitants)
74 Km W of Foligno (57155 inhabitants)
79 Km N of Civitavecchia (52991 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 1.2 2019-09-13
18:09:46
42.81 11.82 8 2019-09-13
18:20:02
Sala Sismica INGV-Roma 72372461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-13 18:09:46 ± 0.2
Latitude 42.81 ± 0.01
Longitude 11.82 ± 0.01
Depth (km) 8 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 72372461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 831
Semi-minor axis of confidence ellipse (meter) 467
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 178
Circular confidence region, given by single value of horizontal uncertainty (meter) 830
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 16
Number of defining phases 16
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) 0.07824
Epicentral distance of station farthest from the epicenter (degree) 0.23832
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 72372461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-13 18:20:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
TV.SF01.EHZ. 2019-09-13T18:09:53.71 0.6 undecidable manual S 272 0.1889 110 -0.17 48
TV.SF13.HHE. 2019-09-13T18:09:52.37 0.6 undecidable manual S 275 0.1484 115 -0.06 49
TV.SF04.EHZ. 2019-09-13T18:09:51.68 0.6 undecidable manual S 284 0.1214 120 0.17 48
TV.SF11.HHE. 2019-09-13T18:09:51.30 0.3 undecidable manual S 301 0.1214 120 -0.22 72
IV.MGAB.HHZ. 2019-09-13T18:09:51.37 0.6 negative manual P 63 0.2383 106 -0.27 46
IV.MCIV.CHZ. 2019-09-13T18:09:50.91 0.6 undecidable manual S 256 0.1097 122 -0.2 48
TV.SF03.EHE. 2019-09-13T18:09:50.89 0.6 undecidable manual S 269 0.0998 125 0.1 49
IV.LATE.HHZ. 2019-09-13T18:09:50.76 0.6 undecidable manual P 184 0.1916 110 0.1 48
TV.SF01.EHZ. 2019-09-13T18:09:50.78 0.1 undecidable manual P 272 0.1889 110 0.18 95
TV.SF14.HHE. 2019-09-13T18:09:49.47 0.1 undecidable manual P 252 0.1592 114 -0.52 89
IV.MCIV.CHZ. 2019-09-13T18:09:49.09 0.1 undecidable manual P 256 0.1097 122 0.09 98
TV.SF03.EHE. 2019-09-13T18:09:49.01 0.1 undecidable manual P 269 0.0998 125 0.2 96
TV.SF04.EHZ. 2019-09-13T18:09:49.56 0.1 undecidable manual P 284 0.1214 120 0.33 93
TV.SF11.HHE. 2019-09-13T18:09:49.17 0.1 undecidable manual P 301 0.1214 120 -0.06 99
TV.SF13.HHE. 2019-09-13T18:09:49.80 0.1 undecidable manual P 275 0.1484 115 0.04 99
IV.SACS.HHZ. 2019-09-13T18:09:48.48 0.1 positive manual P 56 0.0782 132 0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACS.HHE. ML:1.2 0.0002645 0.66 AML other m 2019-09-13T18:09:50.62
IV.MCIV.CHN. ML:1 0.000108 0.88 AML other m 2019-09-13T18:09:51.45
IV.SACS.HHN. ML:1 0.000162 0.4 AML other m 2019-09-13T18:09:51.89
TV.SF04.EHE. ML:1.2 0.000192 0.24 AML other m 2019-09-13T18:09:52.30
IV.MCIV.CHE. ML:1 0.0001225 0.22 AML other m 2019-09-13T18:09:52.82
TV.SF04.EHN. ML:1.2 0.0001755 0.9 AML other m 2019-09-13T18:09:52.72
TV.SF01.EHE. ML:1.2 0.0001109 0.7 AML other m 2019-09-13T18:09:54.87
TV.SF01.EHN. ML:1.3 0.0001425 1.82 AML other m 2019-09-13T18:09:54.02
IV.LATE.HHN. ML:1.4 0.0002025 1.04 AML other m 2019-09-13T18:09:55.04
IV.MGAB.HHE. ML:1.1 6.7E-5 1.42 AML other m 2019-09-13T18:09:57.86
IV.MGAB.HHN. ML:1.2 8.445E-5 0.88 AML other m 2019-09-13T18:09:57.85
IV.LATE.HHE. ML:1.3 0.0001589397 2.88 AML other m 2019-09-13T18:09:56.07
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