Earthquake with magnitude of ML 1.6 on date 01-08-2020 and time 18:13:33 (Italy) in region 3 km SW Castel Giorgio (TR)

A magnitude ML 1.6 earthquake occured in region: 3 km SW Castel Giorgio (TR), on

  • 01-08-2020 16:13:33 (UTC)
  • 01-08-2020 18:13:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.69, 11.95 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
Castel Giorgio TR 3 2131 2131
San Lorenzo Nuovo VT 4 2091 4222
Bolsena VT 6 3991 8213
Grotte di Castro VT 7 2683 10896
Castel Viscardo TR 9 2938 13834
Gradoli VT 9 1353 15187
Acquapendente VT 10 5506 20693
Onano VT 11 995 21688
Porano TR 12 1966 23654
Latera VT 12 836 24490
Proceno VT 13 557 25047
Orvieto TR 13 20630 45677
Bagnoregio VT 14 3650 49327
Lubriano VT 14 909 50236
Allerona TR 14 1794 52030
Capodimonte VT 16 1731 53761
Marta VT 17 3499 57260
Valentano VT 17 2868 60128
Montefiascone VT 18 13432 73560
Ficulle TR 19 1669 75229
Sorano GR 20 3428 78657

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of Viterbo (67173 inhabitants)
59 Km W of Terni (111501 inhabitants)
59 Km SW of Perugia (166134 inhabitants)
68 Km N of Civitavecchia (52991 inhabitants)
68 Km W of Foligno (57155 inhabitants)
69 Km E of Grosseto (82087 inhabitants)
86 Km SE of Siena (53903 inhabitants)
87 Km S of Arezzo (99543 inhabitants)
99 Km NW of Roma (2864731 inhabitants)
99 Km NW of Guidonia Montecelio (88673 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
Reviewed
Rev100
ML 1.6 2020-08-01
16:13:33
42.69 11.95 10 2020-08-01
16:21:07
Sala Sismica INGV-Roma 81551421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-01 16:13:33 ± 0.11
Latitude 42.69 ± 0.00
Longitude 11.95 ± 0.01
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 81551421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 609
Semi-minor axis of confidence ellipse (meter) 415
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 306
Circular confidence region, given by single value of horizontal uncertainty (meter) 610
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 144
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.44606
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 81551421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-08-01 16:21:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
AC.VLO.HHZ. 2020-08-01T16:15:27.38 3.0 undecidable manual Pg 23.969999 0
IV.PANTE.HHZ. 2020-08-01T16:14:58.33 3.0 undecidable manual Pn -4.73 0
IV.SERS.HHZ. 2020-08-01T16:14:47.55 3.0 undecidable manual Pn -3.26 0
IV.ROSPO.HHZ. 2020-08-01T16:14:38.11 3.0 undecidable manual Sn -0.49 0
OX.DRE.HHZ. 2020-08-01T16:14:35.11 3.0 negative manual Pn 2.67 0
IV.SARZ.HHZ. 2020-08-01T16:14:33.41 3.0 undecidable manual Pg 6.33 0
SI.BOSI.HHZ. 2020-08-01T16:14:33.25 3.0 undecidable manual Pn -2.36 0
IV.BOB.HHZ. 2020-08-01T16:14:28.01 3.0 undecidable manual Pg 5.68 0
IV.MCRV.HHZ. 2020-08-01T16:14:20.72 3.0 positive manual Pn -1.73 0
IV.SBPO.HNZ. 2020-08-01T16:14:19.49 3.0 negative manual Pg 1.96 0
IV.VITU.HHZ. 2020-08-01T16:14:16.78 3.0 undecidable manual Pn 2.16 0
IV.MNTV.HNZ. 2020-08-01T16:14:15.61 3.0 undecidable manual Pn -3.66 0
IV.NDIM.HNZ. 2020-08-01T16:14:12.15 3.0 negative manual Pn -3.4 0
IV.RMP.HHZ. 2020-08-01T16:14:10.52 3.0 undecidable manual S 0.7 0
IV.LRP.EHZ. 2020-08-01T16:14:04.15 3.0 undecidable manual P 1.75 0
IV.CAFI.HHZ. 2020-08-01T16:13:56.91 3.0 undecidable manual S -4.19 0
IV.NRCA.HHZ. 2020-08-01T16:13:50.44 3.0 undecidable manual P 0.85 0
IV.MURB.HHZ. 2020-08-01T16:13:47.78 3.0 negative manual P -0.86 0
IV.CAFI.HHZ. 2020-08-01T16:13:46.79 3.0 positive manual P -2.84 0
TV.SF01.EHZ. 2020-08-01T16:13:45.78 0.3 undecidable manual S 293 0.3121 50 -0.07 72
TV.SF14.HHE. 2020-08-01T16:13:44.57 0.3 undecidable manual S 285 0.2572 50 0.33 69
IV.MGAB.HHZ. 2020-08-01T16:13:44.24 0.3 undecidable manual S 27 0.2527 50 0.15 72
TV.SF03.EHN. 2020-08-01T16:13:43.05 0.3 undecidable manual S 300 0.2275 111 -0.25 71
IV.MCIV.CHZ. 2020-08-01T16:13:42.79 0.6 undecidable manual S 294 0.2221 112 -0.33 46
IV.BARO.EHZ. 2020-08-01T16:13:42.85 0.6 positive manual P 171 0.4461 50 -0.24 45
IV.SACS.HNN. 2020-08-01T16:13:41.35 0.3 undecidable manual S 349 0.1637 119 0.28 71
TV.SF01.EHZ. 2020-08-01T16:13:41.31 1.0 undecidable manual P 293 0.3121 50 0.51 22
IV.LATE.HHZ. 2020-08-01T16:13:40.14 0.3 undecidable manual S 236 0.1331 124 0.09 74
TV.SF11.HHE. 2020-08-01T16:13:40.02 0.6 undecidable manual P 312 0.2698 50 -0.06 48
TV.SF13.HHE. 2020-08-01T16:13:40.17 0.3 undecidable manual P 298 0.277 50 -0.04 73
IV.MGAB.HHZ. 2020-08-01T16:13:39.26 0.6 positive manual P 27 0.2527 50 -0.52 44
TV.SF03.EHN. 2020-08-01T16:13:39.25 0.1 undecidable manual P 300 0.2275 111 -0.07 97
TV.SF14.HHE. 2020-08-01T16:13:39.79 0.3 undecidable manual P 285 0.2572 50 -0.08 73
IV.MCIV.CHZ. 2020-08-01T16:13:39.19 0.6 negative manual P 294 0.2221 112 -0.03 49
IV.SACS.HNN. 2020-08-01T16:13:38.04 0.1 undecidable manual P 349 0.1637 119 0 100
IV.LATE.HHZ. 2020-08-01T16:13:37.70 0.3 undecidable manual P 236 0.1331 124 0.25 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LATE.HHE. ML:1.7 0.0005095 0.24 AML other m 2020-08-01T16:13:41.86
IV.LATE.HHN. ML:1.8 0.0006185 1.26 AML other m 2020-08-01T16:13:42.22
IV.MCIV.CHE. ML:1.3 0.0001195 1.76 AML other m 2020-08-01T16:13:43.89
IV.MCIV.CHN. ML:1.2 0.00010175 0.52 AML other m 2020-08-01T16:13:44.87
IV.MGAB.HHN. ML:1.8 0.0003115 0.18 AML other m 2020-08-01T16:13:45.44
IV.MGAB.HNN. ML:1.8 0.0002885 0.18 AML other m 2020-08-01T16:13:45.44
IV.MGAB.HHE. ML:1.7 0.000277 1.54 AML other m 2020-08-01T16:13:45.79
IV.MGAB.HNE. ML:1.7 0.0002865 1.34 AML other m 2020-08-01T16:13:45.79
IV.BARO.EHE. ML:1.4 6.415E-5 0.32 AML other m 2020-08-01T16:13:51.45
IV.BARO.EHN. ML:1.4 7.025E-5 1.22 AML other m 2020-08-01T16:13:51.15
IV.MURB.HHE. ML:2.1 0.0001955 1.64 AML other m 2020-08-01T16:14:01.86
IV.MURB.HHN. ML:2.1 0.0001735 0.22 AML other m 2020-08-01T16:14:01.63
IV.NRCA.HHN. ML:1.3 1.955E-5 0.78 AML other m 2020-08-01T16:14:06.80
IV.NRCA.HHE. ML:1.2 1.475E-5 0.86 AML other m 2020-08-01T16:14:07.45
IV.SBPO.HNN. ML:4.6 0.00654 0.1 AML other m 2020-08-01T16:14:20.22
IV.SBPO.HNE. ML:5.2 0.0235 0.06 AML other m 2020-08-01T16:14:21.78
IV.SARZ.HHN. ML:3.2 0.00013 0.22 AML other m 2020-08-01T16:14:33.59
IV.SARZ.HHE. ML:3.1 0.00011325 1.66 AML other m 2020-08-01T16:14:37.90
IV.BOB.HHN. ML:3.2 0.0002115 0.06 AML other m 2020-08-01T16:15:09.11
IV.BOB.HHE. ML:3.4 0.0002775 0.14 AML other m 2020-08-01T16:15:09.27
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