Earthquake with magnitude of ML 0.8 on date 24-05-2020 and time 04:40:48 (UTC) in region 2 km SW Castel Giorgio (TR)

A magnitude ML 0.8 earthquake occured in region: 2 km SW Castel Giorgio (TR), on

  • 24-05-2020 04:40:48 (UTC)
  • 24-05-2020 06:40:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.69, 11.97 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
Castel Giorgio TR 2 2131 2131
Bolsena VT 5 3991 6122
San Lorenzo Nuovo VT 5 2091 8213
Castel Viscardo TR 8 2938 11151
Grotte di Castro VT 8 2683 13834
Acquapendente VT 11 5506 19340
Gradoli VT 11 1353 20693
Porano TR 11 1966 22659
Orvieto TR 12 20630 43289
Bagnoregio VT 13 3650 46939
Lubriano VT 13 909 47848
Onano VT 13 995 48843
Latera VT 14 836 49679
Allerona TR 14 1794 51473
Proceno VT 14 557 52030
Capodimonte VT 16 1731 53761
Montefiascone VT 18 13432 67193
Marta VT 18 3499 70692
Valentano VT 18 2868 73560
Ficulle TR 18 1669 75229
Celleno VT 19 1355 76584
Fabro TR 20 2876 79460
Castiglione in Teverina VT 20 2329 81789

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NW of Viterbo (67173 inhabitants)
57 Km W of Terni (111501 inhabitants)
58 Km SW of Perugia (166134 inhabitants)
67 Km W of Foligno (57155 inhabitants)
68 Km N of Civitavecchia (52991 inhabitants)
70 Km E of Grosseto (82087 inhabitants)
87 Km S of Arezzo (99543 inhabitants)
87 Km SE of Siena (53903 inhabitants)
98 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 0.8 2020-05-24
04:40:48
42.69 11.97 11 2020-05-24
04:48:27
Sala Sismica INGV-Roma 79499861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-24 04:40:48 ± 0.18
Latitude 42.69 ± 0.01
Longitude 11.97 ± 0.01
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79499861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1007
Semi-minor axis of confidence ellipse (meter) 528
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 137
Circular confidence region, given by single value of horizontal uncertainty (meter) 1010
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 213
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.28778
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 79499861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-24 04:48:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.BRSN.EHZ. 2020-05-24T04:41:25.78 3.0 undecidable manual S -3.76 0
IV.FIR.HHZ. 2020-05-24T04:41:23.24 3.0 undecidable manual S -0.4 0
IV.MNTT.EHZ. 2020-05-24T04:41:21.39 3.0 undecidable manual S 3.72 0
IV.PE3.EHZ. 2020-05-24T04:41:14.04 3.0 undecidable manual S 1.12 0
IT.RMMM.HGZ. 2020-05-24T04:41:01.82 3.0 undecidable manual P 0.05 0
IV.PE3.EHZ. 2020-05-24T04:40:59.35 3.0 negative manual P 0.01 0
TV.SF13.HHN. 2020-05-24T04:40:59.28 0.3 undecidable manual S 297 0.2878 50 0.16 72
TV.SF14.HHZ. 2020-05-24T04:40:58.41 0.6 undecidable manual S 284 0.2698 50 -0.16 48
IV.MTRA.EHZ. 2020-05-24T04:40:58.76 3.0 undecidable manual P -0.42 0
TV.SF11.HHZ. 2020-05-24T04:40:58.50 0.3 undecidable manual S 310 0.2788 50 -0.34 69
IV.MGAB.HNE. 2020-05-24T04:40:58.01 0.3 undecidable manual S 25 0.2455 50 0.15 73
TV.SF04.EHZ. 2020-05-24T04:40:58.55 0.3 undecidable manual S 303 0.2698 50 -0.04 74
IV.SACS.HHZ. 2020-05-24T04:40:55.48 0.3 undecidable manual S 344 0.1655 120 0.12 74
TV.SF04.EHZ. 2020-05-24T04:40:54.03 0.3 undecidable manual P 303 0.2698 50 -0.09 73
IV.LATE.HHZ. 2020-05-24T04:40:54.65 0.3 undecidable manual S 238 0.1439 123 -0.03 76
TV.SF13.HHN. 2020-05-24T04:40:54.97 0.6 undecidable manual P 297 0.2878 50 0.55 44
TV.SF14.HHZ. 2020-05-24T04:40:54.76 0.6 undecidable manual P 284 0.2698 50 0.65 42
TV.SF11.HHZ. 2020-05-24T04:40:54.13 0.6 undecidable manual P 310 0.2788 50 -0.14 48
IV.MGAB.HNE. 2020-05-24T04:40:53.43 0.3 undecidable manual P 25 0.2455 50 -0.27 71
IV.SACS.HHZ. 2020-05-24T04:40:52.19 0.1 undecidable manual P 344 0.1655 120 -0.07 100
IV.LATE.HHZ. 2020-05-24T04:40:51.73 0.6 undecidable manual P 238 0.1439 123 -0.13 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LATE.HHE. ML:0.7 4.333742E-5 0.2016 AML other m 2020-05-24T04:40:57.72
IV.LATE.HHN. ML:0.9 7.1386125E-5 0.2816 AML other m 2020-05-24T04:40:57.83
IV.SACS.HHE. ML:0.8 5.06488E-5 0.2208 AML other m 2020-05-24T04:40:55.89
IV.SACS.HHN. ML:0.6 3.340506E-5 0.1408 AML other m 2020-05-24T04:40:55.66
IV.PE3.EHE. ML:2.2 0.000120441 2 AML other m 2020-05-24T04:41:20.29
IV.PE3.EHN. ML:2.2 0.0001092472 3.4176 AML other m 2020-05-24T04:41:16.86
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