Earthquake with magnitude of ML 2.0 on date 08-11-2018 and time 06:27:51 (Italy) in region 3 km SW Castiglione d'Orcia (SI)

A magnitude ML 2.0 earthquake occured in region: 3 km SW Castiglione d'Orcia (SI), on

  • 08-11-2018 05:27:51 (UTC)
  • 08-11-2018 06:27:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.99, 11.59 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Castiglione d'Orcia SI 3 2346 2346
Seggiano GR 7 961 3307
San Quirico d'Orcia SI 8 2662 5969
Castel del Piano GR 11 4690 10659
Montalcino SI 11 5093 15752
Pienza SI 13 2107 17859
Arcidosso GR 13 4285 22144
Abbadia San Salvatore SI 14 6444 28588
Santa Fiora GR 17 2622 31210
Piancastagnaio SI 18 4230 35440
Radicofani SI 18 1097 36537
San Giovanni d'Asso SI 18 853 37390
Buonconvento SI 19 3173 40563
Cinigiano GR 19 2618 43181
Montepulciano SI 20 14097 57278

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km SE of Siena (53903 inhabitants)
46 Km NE of Grosseto (82087 inhabitants)
59 Km SW of Arezzo (99543 inhabitants)
67 Km W of Perugia (166134 inhabitants)
76 Km NW of Viterbo (67173 inhabitants)
91 Km SE of Firenze (382808 inhabitants)
91 Km W of Foligno (57155 inhabitants)
92 Km SE of Scandicci (50609 inhabitants)
99 Km W of Terni (111501 inhabitants)
Recent and historical Seismicity

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
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 1000 ML 2.0 2018-11-08
05:27:51
42.99 11.59 10 2019-06-04
09:16:03
Bollettino Sismico Italiano INGV 63980391
Rev 100 ML 2.1 2018-11-08
05:27:51
43 11.6 10 2018-11-08
05:37:08
Sala Sismica INGV-Roma 62887591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-08 05:27:51 ± 0.09
Latitude 42.99 ± 0.01
Longitude 11.59 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 63980391

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 604
Semi-minor axis of confidence ellipse (meter) 490
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 177
Circular confidence region, given by single value of horizontal uncertainty (meter) 600
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 54
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.85166
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 63980391
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-12-18 09:37:39

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 29
Type of magnitude ML
Reference to an origin 62887591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-11-08 05:37:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FIAM.HHZ. 2018-11-08T05:28:35.73 3.0 undecidable manual S 0.13 0
IV.RUFI.EHE. 2018-11-08T05:28:19.19 0.1 undecidable manual S 356 0.8517 50 -0.33 81
IV.ASQU.HHE. 2018-11-08T05:28:19.03 0.3 undecidable manual S 10 0.822 50 0.39 60
IV.ATPI.EHZ. 2018-11-08T05:28:16.92 0.3 undecidable manual S 52 0.7527 50 0.31 62
IV.MURB.HHZ. 2018-11-08T05:28:16.07 0.1 undecidable manual S 68 0.7374 50 -0.08 88
IV.ATLO.EHE. 2018-11-08T05:28:14.42 0.1 undecidable manual S 61 0.6826 50 -0.09 89
IV.ATTE.HHN. 2018-11-08T05:28:11.32 0.3 undecidable manual S 69 0.598 50 -0.7 57
IV.OSSC.HHZ. 2018-11-08T05:28:11.53 0.1 undecidable manual S 335 0.59 50 -0.24 88
IV.ATVA.EHE. 2018-11-08T05:28:11.87 0.1 undecidable manual S 60 0.5873 50 0.18 89
IV.TRIF.HHZ. 2018-11-08T05:28:10.20 0.1 undecidable manual S 284 0.5153 50 0.65 79
IV.CSNT.HHZ. 2018-11-08T05:28:09.16 0.1 undecidable manual S 336 0.5306 50 -0.86 73
IV.ASSB.HHN. 2018-11-08T05:28:07.52 0.3 undecidable manual P 86 0.786 50 0.88 51
IV.RUFI.EHE. 2018-11-08T05:28:07.73 0.1 undecidable manual P 356 0.8517 50 -0.03 86
IV.ASQU.HHE. 2018-11-08T05:28:07.66 0.3 undecidable manual P 10 0.822 50 0.41 60
IV.CAFI.HHZ. 2018-11-08T05:28:06.84 0.1 undecidable manual S 39 0.4398 50 -0.48 86
IV.ATPI.EHZ. 2018-11-08T05:28:06.30 0.3 undecidable manual P 52 0.7527 50 0.22 64
IV.MURB.HHZ. 2018-11-08T05:28:06.50 0.1 undecidable manual P 68 0.7374 50 0.69 75
IV.MOMA.HNZ. 2018-11-08T05:28:06.70 0.1 undecidable manual P 104 0.7437 50 0.78 71
IV.RIBO.EHZ. 2018-11-08T05:28:05.69 0.1 undecidable manual S 265 0.3966 50 -0.35 89
IV.MAON.HHZ. 2018-11-08T05:28:05.12 0.1 negative manual P 211 0.652 50 0.78 73
IV.FROS.HHZ. 2018-11-08T05:28:05.13 0.1 undecidable manual S 305 0.384 50 -0.54 85
IV.CRE.HHZ. 2018-11-08T05:28:05.23 0.1 undecidable manual P 23 0.6844 50 0.33 84
IV.ATLO.EHE. 2018-11-08T05:28:04.80 0.1 undecidable manual P 61 0.6826 50 -0.06 89
IV.ATVA.EHE. 2018-11-08T05:28:03.26 0.1 undecidable manual P 60 0.5873 50 0.03 91
IV.ATTE.HHN. 2018-11-08T05:28:03.79 0.3 undecidable manual P 69 0.598 50 0.36 64
IV.OSSC.HHZ. 2018-11-08T05:28:02.95 0.1 undecidable manual P 335 0.59 50 -0.34 86
IV.TRIF.HHZ. 2018-11-08T05:28:02.70 0.1 negative manual P 284 0.5153 50 0.7 78
IV.CSNT.HHZ. 2018-11-08T05:28:01.79 0.1 undecidable manual P 336 0.5306 50 -0.48 84
TV.SF14.HHN. 2018-11-08T05:28:00.24 0.1 undecidable manual S 175 0.2338 50 -0.98 73
IV.CAFI.HHZ. 2018-11-08T05:28:00.43 0.1 undecidable manual P 39 0.4398 50 -0.28 89
IV.RIBO.EHZ. 2018-11-08T05:28:00.37 0.1 undecidable manual P 265 0.3966 50 0.39 88
IV.LATE.HHZ. 2018-11-08T05:28:00.55 0.1 undecidable manual P 157 0.4065 50 0.4 88
IV.FROS.HHZ. 2018-11-08T05:27:59.69 0.1 negative manual P 305 0.384 50 -0.08 94
TV.SF03.EHN. 2018-11-08T05:27:59.58 0.1 undecidable manual S 158 0.1988 115 -0.58 87
TV.SF01.EHZ. 2018-11-08T05:27:59.60 0.1 undecidable manual S 185 0.1772 118 0.2 96
TV.SF13.HHN. 2018-11-08T05:27:58.92 0.1 undecidable manual S 172 0.1709 119 -0.29 94
IV.ARCI.HHZ. 2018-11-08T05:27:58.84 0.1 undecidable manual S 211 0.1583 121 0.06 99
TV.SF04.EHZ. 2018-11-08T05:27:58.40 0.1 undecidable manual S 160 0.1619 120 -0.49 90
IV.MCIV.HHZ. 2018-11-08T05:27:57.05 0.1 positive manual P 162 0.2194 50 0.1 97
TV.SF11.HHZ. 2018-11-08T05:27:57.70 0.1 undecidable manual S 150 0.1376 124 -0.4 93
TV.SF03.EHN. 2018-11-08T05:27:56.70 0.1 positive manual P 158 0.1988 115 0.12 97
TV.SF01.EHZ. 2018-11-08T05:27:56.31 0.1 positive manual P 185 0.1772 118 0.17 96
TV.SF14.HHN. 2018-11-08T05:27:56.93 0.1 positive manual P 175 0.2338 50 -0.26 94
TV.SF13.HHN. 2018-11-08T05:27:56.24 0.1 positive manual P 172 0.1709 119 0.21 96
TV.SF04.EHZ. 2018-11-08T05:27:55.99 0.1 undecidable manual P 160 0.1619 120 0.14 97
IV.ARCI.HHZ. 2018-11-08T05:27:55.96 0.1 positive manual P 211 0.1583 121 0.18 97
TV.SF11.HHZ. 2018-11-08T05:27:55.36 0.1 undecidable manual P 150 0.1376 124 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARCI.HHE. ML:2.2 0.0012180255 0.2592 AML other m 2018-11-08T05:27:59.03
IV.ARCI.HHN. ML:2.4 0.002097921 0.2592 AML other m 2018-11-08T05:27:59.63
TV.SF04.EHE. ML:2.7 0.0037110205 0.1792 AML other m 2018-11-08T05:27:59.56
TV.SF04.EHN. ML:2.8 0.0046683815 0.16 AML other m 2018-11-08T05:27:58.59
TV.SF01.EHN. ML:2.7 0.0036875605 0.2016 AML other m 2018-11-08T05:28:00.19
TV.SF01.EHE. ML:2.5 0.0023564955 0.2176 AML other m 2018-11-08T05:28:00.21
IV.MCIV.HHN. ML:2.2 0.0009986637 0.2304 AML other m 2018-11-08T05:28:01.47
IV.FROS.HHE. ML:2 0.0002998553 0.16 AML other m 2018-11-08T05:28:07.60
IV.RIBO.EHE.01 ML:2.4 0.0007239706 0.1984 AML other m 2018-11-08T05:28:07.76
IV.CAFI.HHN. ML:1.7 0.00012787985 0.2208 AML other m 2018-11-08T05:28:08.16
IV.LATE.HHE. ML:1.8 0.000206105 0.32 AML other m 2018-11-08T05:28:08.97
IV.OSSC.HHE. ML:1.8 0.00012992357 0.1824 AML other m 2018-11-08T05:28:13.09
IV.OSSC.HNN. ML:2 0.00019123355 0.3808 AML other m 2018-11-08T05:28:13.34
IV.OSSC.HNE. ML:1.9 0.0001590083 0.3392 AML other m 2018-11-08T05:28:12.90
IV.OSSC.HHN. ML:1.9 0.00015829425 0.32 AML other m 2018-11-08T05:28:12.90
IV.CRE.HHE. ML:1.9 0.000112923445 0.24 AML other m 2018-11-08T05:28:16.09
IV.CRE.HHN. ML:2.1 0.00018489215 0.24 AML other m 2018-11-08T05:28:16.23
IV.MURB.HNE. ML:2.6 0.0005452282 0.4192 AML other m 2018-11-08T05:28:21.37
IV.MURB.HHE. ML:2.6 0.00056849355 0.4416 AML other m 2018-11-08T05:28:21.37
IV.MURB.HNN. ML:2.8 0.00090800085 0.2816 AML other m 2018-11-08T05:28:19.65
IV.MURB.HHN. ML:2.8 0.0009077585 0.2816 AML other m 2018-11-08T05:28:19.65
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
Waveforms Seismic signals in full SEED format Download