INGVCENTRO​NAZIONALE​TERREMOTI
Sala Sismica

Earthquake with magnitude of Md 0.8 on date 24-06-2018 and time 05:06:59 (Italy) in region 4 km NE Sorano (GR)

A magnitude Md 0.8 earthquake occured in region: 4 km NE Sorano (GR), on

  • 24-06-2018 03:06:59 (UTC)
  • 24-06-2018 05:06:59 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.72, 11.74 at 5 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
Sorano GR 4 3428 3428
Onano VT 7 995 4423
Castell'Azzara GR 8 1476 5899
Proceno VT 9 557 6456
Pitigliano GR 11 3818 10274
Acquapendente VT 11 5506 15780
Grotte di Castro VT 12 2683 18463
Latera VT 12 836 19299
Gradoli VT 12 1353 20652
San Lorenzo Nuovo VT 14 2091 22743
Piancastagnaio SI 16 4230 26973
Semproniano GR 16 1059 28032
Valentano VT 17 2868 30900
Santa Fiora GR 18 2622 33522
Farnese VT 18 1527 35049
Ischia di Castro VT 19 2326 37375
Abbadia San Salvatore SI 19 6444 43819
Castel Giorgio TR 20 2131 45950

Municipalities with at least 50000 inhabitants

An earthquake occurred to
45 Km NW of Viterbo (67173 inhabitants)
51 Km E of Grosseto (82087 inhabitants)
69 Km SW of Perugia (166134 inhabitants)
69 Km N of Civitavecchia (52991 inhabitants)
75 Km SE of Siena (53903 inhabitants)
76 Km W of Terni (111501 inhabitants)
83 Km W of Foligno (57155 inhabitants)
85 Km S of Arezzo (99543 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 Md 0.8 2018-06-24
03:06:59
42.71 11.74 5 2018-06-24
03:13:24
Sala Sismica INGV-Roma 58086971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-06-24 03:06:59 ± 0.18
Latitude 42.71 ± 0.01
Longitude 11.74 ± 0.01
Depth (km) 5 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 58086971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 993
Semi-minor axis of confidence ellipse (meter) 769
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 311
Circular confidence region, given by single value of horizontal uncertainty (meter) 990
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 318
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.16188
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 6
Magnitude information

Md:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 6
Type of magnitude Md
Reference to an origin 58086971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-06-24 03:13:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.GRAM.HHZ. 2018-06-24T03:07:36.50 3.0 undecidable manual Pg 8.79 0
IV.APEC.HHZ. 2018-06-24T03:07:06.62 3.0 negative manual P -0.01 0
TV.SF04.EHZ. 2018-06-24T03:07:05.36 0.6 undecidable manual S 334 0.134 109 -0.06 49
TV.SF13.HHE. 2018-06-24T03:07:05.61 0.6 undecidable manual S 320 0.1367 109 0.12 49
IV.RMP.HHZ. 2018-06-24T03:07:05.37 3.0 positive manual Pn 0.01 0
TV.SF14.HHE. 2018-06-24T03:07:04.18 0.6 undecidable manual S 294 0.1007 115 -0.04 50
TV.SF01.EHZ. 2018-06-24T03:07:03.97 1.0 negative manual P 307 0.1619 106 0.27 23
IV.MCIV.HHZ. 2018-06-24T03:07:03.66 0.6 undecidable manual S 324 0.0791 120 0.18 49
TV.SF03.EHZ. 2018-06-24T03:07:03.83 0.6 undecidable manual S 336 0.0971 115 -0.25 48
TV.SF04.EHZ. 2018-06-24T03:07:03.04 1.0 undecidable manual P 334 0.134 109 -0.07 25
TV.SF13.HHE. 2018-06-24T03:07:03.14 0.1 undecidable manual P 320 0.1367 109 -0.01 100
TV.SF14.HHE. 2018-06-24T03:07:02.29 0.1 undecidable manual P 294 0.1007 115 -0.12 98
IV.MCIV.HHZ. 2018-06-24T03:07:02.16 0.6 undecidable manual P 324 0.0791 120 0.17 49
TV.SF03.EHZ. 2018-06-24T03:07:02.36 0.1 undecidable manual P 336 0.0971 115 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MCIV.HHZ. Md:0.6 5 END duration s
TV.SF04.EHZ. Md:0.8 6 END duration s
TV.SF01.EHZ. Md:1 7 END duration s
TV.SF03.EHZ. Md:0.8 6 END duration s
TV.SF13.HHE. Md:0.8 6 END duration s
TV.SF14.HHE. Md:0.8 6 END duration s
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