Earthquake with magnitude of ML 1.2 on date 18-07-2019 and time 20:18:24 (Italy) in region 5 km SW Cetona (SI)

A magnitude ML 1.2 earthquake occured in region: 5 km SW Cetona (SI), on

  • 18-07-2019 18:18:24 (UTC)
  • 18-07-2019 20:18:24 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.94, 11.85 at 12 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
Cetona SI 5 2755 2755
Sarteano SI 7 4717 7472
San Casciano dei Bagni SI 7 1632 9104
Radicofani SI 8 1097 10201
Chiusi SI 12 8704 18905
Città della Pieve PG 13 7712 26617
Chianciano Terme SI 14 7105 33722
Abbadia San Salvatore SI 15 6444 40166
Fabro TR 16 2876 43042
Piancastagnaio SI 16 4230 47272
Monteleone d'Orvieto TR 17 1467 48739
Allerona TR 17 1794 50533
Montepulciano SI 18 14097 64630
Proceno VT 20 557 65187
Piegaro PG 20 3669 68856

Municipalities with at least 50000 inhabitants

An earthquake occurred to
48 Km W of Perugia (166134 inhabitants)
59 Km S of Arezzo (99543 inhabitants)
60 Km SE of Siena (53903 inhabitants)
61 Km NW of Viterbo (67173 inhabitants)
63 Km E of Grosseto (82087 inhabitants)
70 Km W of Foligno (57155 inhabitants)
77 Km NW of Terni (111501 inhabitants)
94 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 2019-07-18
18:18:24
42.93 11.85 12 2019-07-18
18:27:42
Sala Sismica INGV-Roma 70690421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-18 18:18:24 ± 0.1
Latitude 42.93 ± 0.01
Longitude 11.85 ± 0.00
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 70690421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 689
Semi-minor axis of confidence ellipse (meter) 595
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 155
Circular confidence region, given by single value of horizontal uncertainty (meter) 690
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 203
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) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.28509
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 70690421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-18 18:27:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MILN.HNZ. 2019-07-18T18:20:13.55 3.0 undecidable manual Sg 18.35 0
IV.HPAC.HHZ. 2019-07-18T18:20:11.09 3.0 positive manual Pg 25.73 0
IV.CMPR.HHZ. 2019-07-18T18:20:03.05 3.0 undecidable manual Sg 22.43 0
MN.BLY.HHZ. 2019-07-18T18:20:02.88 3.0 undecidable manual Sn -4.21 0
IV.EUCT.HNZ. 2019-07-18T18:19:49.22 3.0 undecidable manual Sn -1.76 0
IV.CORL.HHZ. 2019-07-18T18:19:43.81 3.0 undecidable manual Pg 19 0
IV.CSLB.HHZ. 2019-07-18T18:19:23.38 3.0 positive manual Pn -2.65 0
IV.SARZ.HHZ. 2019-07-18T18:19:19.69 3.0 positive manual Pg 11.6 0
IV.COLB.HHZ. 2019-07-18T18:19:16.33 3.0 undecidable manual Sn -0.65 0
CR.STON.BHZ. 2019-07-18T18:19:12.48 3.0 negative manual Pn -3.75 0
IV.BRSN.EHZ. 2019-07-18T18:19:06.63 3.0 undecidable manual Sg -1.68 0
IV.LMD.HHZ. 2019-07-18T18:19:05.96 3.0 undecidable manual Sg 1.49 0
IV.CMPR.HHZ. 2019-07-18T18:19:03.96 3.0 undecidable manual Pn -0.13 0
IV.CAVE.HHZ. 2019-07-18T18:18:57.92 3.0 negative manual Pg 1.66 0
IV.MELA.HHZ. 2019-07-18T18:18:52.30 3.0 negative manual Pn 0.34 0
IV.BRSN.EHZ. 2019-07-18T18:18:46.31 3.0 negative manual Pg 0.37 0
IV.MIDA.HHZ. 2019-07-18T18:18:46.69 3.0 undecidable manual Pn 2.48 0
IV.ARCI.HHZ. 2019-07-18T18:18:34.64 0.3 undecidable manual S 253 0.2851 92 -0.37 68
TV.SF01.EHZ. 2019-07-18T18:18:33.68 0.3 undecidable manual S 240 0.2419 93 -0.05 73
IV.CAFI.HHZ. 2019-07-18T18:18:32.62 3.0 negative manual Pg -0.6 0
TV.SF13.HHE. 2019-07-18T18:18:32.49 0.3 undecidable manual S 235 0.2032 94 -0.11 73
IV.MGAB.HHZ. 2019-07-18T18:18:32.24 0.3 undecidable manual S 96 0.1952 95 -0.1 72
IV.MCIV.CHE. 2019-07-18T18:18:32.46 0.3 undecidable manual S 219 0.2005 94 -0.04 74
IV.PE3.EHZ. 2019-07-18T18:18:31.30 3.0 positive manual Pn -6.62 0
IV.ARCI.HHZ. 2019-07-18T18:18:30.68 0.1 undecidable manual P 253 0.2851 92 0.28 92
TV.SF11.HHE. 2019-07-18T18:18:30.57 0.3 undecidable manual S 242 0.1403 103 -0.17 73
TV.SF01.EHZ. 2019-07-18T18:18:30.00 0.6 undecidable manual P 240 0.2419 93 0.33 46
IV.MCIV.CHE. 2019-07-18T18:18:29.07 0.1 undecidable manual P 219 0.2005 94 0.11 97
IV.SACS.HHZ. 2019-07-18T18:18:29.61 0.1 undecidable manual S 152 0.0971 121 0.05 100
TV.SF13.HHE. 2019-07-18T18:18:29.18 0.3 undecidable manual P 235 0.2032 94 0.17 72
TV.SF14.HHE. 2019-07-18T18:18:29.49 0.3 undecidable manual P 224 0.2482 93 -0.28 69
TV.SF04.EHZ. 2019-07-18T18:18:28.55 0.3 undecidable manual P 234 0.1691 97 0.12 73
TV.SF03.EHE. 2019-07-18T18:18:28.78 0.3 undecidable manual P 222 0.1772 96 0.21 72
IV.MGAB.HHZ. 2019-07-18T18:18:28.75 1.0 positive manual P 96 0.1952 95 -0.11 24
TV.SF11.HHE. 2019-07-18T18:18:27.92 0.3 undecidable manual P 242 0.1403 103 -0.02 75
IV.SACS.HHZ. 2019-07-18T18:18:27.16 0.1 undecidable manual P 152 0.0971 121 -0.1 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SACS.HHN. ML:1.3 0.0002415 1.06 AML other m 2019-07-18T18:18:30.16
IV.SACS.HHE. ML:1.4 0.0002605 0.52 AML other m 2019-07-18T18:18:30.24
IV.MGAB.HHN. ML:1.1 8.255E-5 0.52 AML other m 2019-07-18T18:18:32.98
IV.MGAB.HNN. ML:1.1 8.42E-5 1.52 AML other m 2019-07-18T18:18:32.98
IV.MGAB.HHE. ML:1.3 0.000125 0.58 AML other m 2019-07-18T18:18:34.62
IV.MGAB.HNE. ML:1.2 9.915E-5 0.58 AML other m 2019-07-18T18:18:34.62
IV.BRSN.EHN. ML:2.8 0.0003345 0.24 AML other m 2019-07-18T18:18:52.89
IV.BRSN.EHE. ML:2.9 0.000424 0.76 AML other m 2019-07-18T18:19:11.80
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