Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 08-11-2018 and time 06:57:17 (Italy) in region 3 km W Castiglione d'Orcia (SI)

A magnitude ML 2.3 earthquake occured in region: 3 km W Castiglione d'Orcia (SI), on

  • 08-11-2018 05:57:17 (UTC)
  • 08-11-2018 06:57:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.0140, 11.5780 at 4 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.

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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
San Quirico d'Orcia SI 6 2662 5008
Montalcino SI 9 5093 10101
Seggiano GR 10 961 11062
Pienza SI 11 2107 13169
Castel del Piano GR 14 4690 17859
San Giovanni d'Asso SI 16 853 18712
Buonconvento SI 16 3173 21885
Arcidosso GR 16 4285 26170
Abbadia San Salvatore SI 17 6444 32614
Montepulciano SI 19 14097 46711

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SE of Siena (53903 inhabitants)
47 Km NE of Grosseto (82087 inhabitants)
56 Km SW of Arezzo (99543 inhabitants)
67 Km W of Perugia (166134 inhabitants)
79 Km NW of Viterbo (67173 inhabitants)
88 Km SE of Firenze (382808 inhabitants)
89 Km SE of Scandicci (50609 inhabitants)
92 Km W of Foligno (57155 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.3 2018-11-08
05:57:17		 43.0143 11.5785 4 2019-06-04
09:16:07		 Bollettino Sismico Italiano INGV 64851201
Reviewed
Rev100 		ML 2.3 2018-11-08
05:57:18		 42.9777 11.5965 9 2018-11-08
06:11:40		 Sala Sismica INGV-Roma 62888421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-08 05:57:17 ± 0.08
Latitude 43.0143 ± 0.0036
Longitude 11.5785 ± 0.0049
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 64851201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 389
Semi-minor axis of confidence ellipse (meter) 321
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 52
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 54
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.06660
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 64851201
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-01-22 08:41:18

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 42
Type of magnitude ML
Reference to an origin 62888421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-11-08 06:11:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ZONE.HHZ. 2018-11-08T05:58:52.28 3.0 undecidable manual Sg 8.74 0
IV.EUCT.HNZ. 2018-11-08T05:58:42.20 3.0 undecidable manual Sn 1.78 0
IV.GATE.HHZ. 2018-11-08T05:58:05.51 3.0 positive manual Pn 0.45 0
IV.MODR.HHZ. 2018-11-08T05:58:02.38 3.0 undecidable manual Pg 2.2 0
IV.LMD.HHZ. 2018-11-08T05:57:53.57 0.1 undecidable manual S 5 118.3926 50 0.09 82
IV.PIEI.HHZ. 2018-11-08T05:57:47.84 0.1 undecidable manual S 53 96.5256 50 0.2 84
IV.ASQU.HHZ. 2018-11-08T05:57:45.91 0.1 undecidable manual S 11 88.4448 50 0.42 81
IV.ATFO.HHZ. 2018-11-08T05:57:45.14 0.1 undecidable manual S 64 89.3439 50 -0.58 77
IV.RUFI.EHE. 2018-11-08T05:57:45.51 0.1 undecidable manual S 357 91.5417 50 -0.81 70
IV.ATPI.EHZ. 2018-11-08T05:57:44.44 0.1 undecidable manual S 54 82.3509 50 0.59 78
IV.MURB.HHZ. 2018-11-08T05:57:43.86 0.1 undecidable manual S 70 81.3519 50 0.25 85
IV.ATVO.HHZ. 2018-11-08T05:57:43.25 0.1 undecidable manual S 58 78.4659 50 0.44 83
IV.MAON.HHZ. 2018-11-08T05:57:41.88 0.1 undecidable manual S 209 74.5698 50 0.1 89
IV.CRE.HHZ. 2018-11-08T05:57:41.44 0.1 undecidable manual S 24 73.4709 50 -0.06 90
IV.LMD.HHZ. 2018-11-08T05:57:38.99 0.3 undecidable manual P 5 118.3926 50 0.61 54
IV.OSSC.HHZ. 2018-11-08T05:57:38.23 0.1 undecidable manual S 335 62.5929 50 -0.35 87
IV.TRIF.HHZ. 2018-11-08T05:57:36.86 0.1 undecidable manual S 282 55.8996 50 0.06 93
IV.CSNT.HHZ. 2018-11-08T05:57:36.49 0.1 undecidable manual S 335 55.9995 50 -0.33 88
IV.PIEI.HHZ. 2018-11-08T05:57:35.12 0.1 undecidable manual P 53 96.5256 50 0.11 85
IV.CAFI.HHZ. 2018-11-08T05:57:34.11 0.1 undecidable manual S 42 46.9197 94 0.01 96
IV.RUFI.EHE. 2018-11-08T05:57:34.88 0.1 undecidable manual P 357 91.5417 50 0.63 75
IV.ASQU.HHZ. 2018-11-08T05:57:34.10 0.1 undecidable manual P 11 88.4448 50 0.33 83
IV.PARC.HHZ. 2018-11-08T05:57:33.72 0.1 undecidable manual P 37 88.245 50 -0.02 88
IV.ASSB.HHE. 2018-11-08T05:57:33.21 0.1 undecidable manual P 88 87.6456 50 -0.44 81
IV.MOMA.HHZ. 2018-11-08T05:57:33.19 0.1 undecidable manual P 106 83.8494 50 0.12 87
IV.SSP9.EHZ. 2018-11-08T05:57:32.44 0.1 undecidable manual P 36 76.4679 50 0.52 81
IV.RIBO.EHZ. 2018-11-08T05:57:32.51 0.1 undecidable manual S 261 43.8228 95 -0.49 87
IV.ATPI.EHZ. 2018-11-08T05:57:32.80 0.1 undecidable manual P 54 82.3509 50 -0.02 89
IV.ATFO.HHZ. 2018-11-08T05:57:32.97 0.1 undecidable manual P 64 89.3439 50 -0.93 67
IV.MURB.HHZ. 2018-11-08T05:57:32.24 0.1 undecidable manual P 70 81.3519 50 -0.44 82
IV.ATVO.HHZ. 2018-11-08T05:57:32.28 0.1 undecidable manual P 58 78.4659 50 0.05 90
IV.MAON.HHZ. 2018-11-08T05:57:31.49 0.1 undecidable manual P 209 74.5698 50 -0.14 89
IV.CRE.HHZ. 2018-11-08T05:57:31.76 0.1 undecidable manual P 24 73.4709 50 0.29 86
IV.FROS.HHZ. 2018-11-08T05:57:31.48 0.1 undecidable manual S 303 40.5261 95 -0.38 90
IV.OSSC.HHZ. 2018-11-08T05:57:29.54 0.1 undecidable manual P 335 62.5929 50 -0.24 89
IV.ATTE.HHZ. 2018-11-08T05:57:29.85 0.1 undecidable manual P 72 65.9895 50 -0.46 84
IV.TRIF.HHZ. 2018-11-08T05:57:29.16 0.1 undecidable manual P 282 55.8996 50 0.41 87
IV.CSNT.HHZ. 2018-11-08T05:57:28.27 0.1 undecidable manual P 335 55.9995 50 -0.5 85
TV.SF14.HHZ. 2018-11-08T05:57:27.58 0.1 undecidable manual S 174 28.9488 97 -0.29 93
TV.SF03.EHZ. 2018-11-08T05:57:26.03 0.1 undecidable manual S 160 25.0527 98 -0.5 90
IV.FROS.HHZ. 2018-11-08T05:57:26.14 0.1 undecidable manual P 303 40.5261 95 0.24 92
IV.CAFI.HHZ. 2018-11-08T05:57:26.88 0.1 undecidable manual P 42 46.9197 94 -0.31 90
IV.RIBO.EHZ. 2018-11-08T05:57:26.82 0.1 undecidable manual P 261 43.8228 95 0.26 91
IV.MCIV.HHZ. 2018-11-08T05:57:26.78 0.1 undecidable manual S 163 27.3504 97 -0.55 88
IV.LATE.HHZ. 2018-11-08T05:57:26.96 0.1 positive manual P 157 48.1185 94 -0.46 87
IV.ARCI.HHZ. 2018-11-08T05:57:25.21 0.1 undecidable manual S 205 19.869 100 0.45 92
TV.SF13.HHZ. 2018-11-08T05:57:25.33 0.1 undecidable manual S 171 21.9669 99 -0.16 97
TV.SF01.EHZ. 2018-11-08T05:57:25.65 0.1 undecidable manual S 183 22.4553 99 -0.01 100
TV.SF04.EHZ. 2018-11-08T05:57:24.98 0.1 undecidable manual S 161 20.868 100 -0.14 98
TV.SF11.HHZ. 2018-11-08T05:57:24.07 0.1 undecidable manual S 153 18.0708 101 -0.09 99
IV.MCIV.HHZ. 2018-11-08T05:57:23.47 0.1 positive manual P 163 27.3504 97 0.19 96
TV.SF03.EHZ. 2018-11-08T05:57:23.12 0.1 positive manual P 160 25.0527 98 0.29 94
TV.SF14.HHZ. 2018-11-08T05:57:23.35 0.1 positive manual P 174 28.9488 97 -0.25 94
TV.SF13.HHZ. 2018-11-08T05:57:22.65 0.1 positive manual P 171 21.9669 99 0.43 92
TV.SF01.EHZ. 2018-11-08T05:57:22.75 0.1 positive manual P 183 22.4553 99 0.43 92
TV.SF04.EHZ. 2018-11-08T05:57:22.39 0.1 positive manual P 161 20.868 100 0.38 93
IV.ARCI.HHZ. 2018-11-08T05:57:22.39 0.1 positive manual P 205 19.869 100 0.59 88
TV.SF11.HHZ. 2018-11-08T05:57:21.86 0.1 undecidable manual P 153 18.0708 101 0.4 93
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSNT.HHN. ML:2.2 0.0003682127 0.1984 AML other m 2018-11-08T05:57:37.29
IV.ARCI.HHN. ML:2.6 0.003555992 0.2624 AML other m 2018-11-08T05:57:26.10
TV.SF01.EHN. ML:2.7 0.0037008944999999994 0.5408 AML other m 2018-11-08T05:57:28.50
IV.MCIV.HHE. ML:2.6 0.002097283 0.336 AML other m 2018-11-08T05:57:29.59
IV.MCIV.HHN. ML:2.6 0.0021450174999999997 0.352 AML other m 2018-11-08T05:57:28.57
IV.FROS.HHN. ML:2.6 0.0014538905 0.208 AML other m 2018-11-08T05:57:32.96
IV.CAFI.HNN. ML:2.2 0.0004052721335 0.4384 AML other m 2018-11-08T05:57:35.01
IV.CAFI.HHE. ML:2.2 0.00040353675 0.48 AML other m 2018-11-08T05:57:34.24
IV.LATE.HHE. ML:2.2 0.00039519910000000003 0.4 AML other m 2018-11-08T05:57:35.43
IV.CSNT.HHE. ML:2.4 0.0005808666 0.2592 AML other m 2018-11-08T05:57:36.99
IV.OSSC.HNN. ML:2.2 0.00032708985 0.3488 AML other m 2018-11-08T05:57:39.59
IV.OSSC.HNE. ML:2.1 0.00027595105 0.3584 AML other m 2018-11-08T05:57:39.42
IV.OSSC.HHE. ML:2.2 0.00029863445 0.3584 AML other m 2018-11-08T05:57:39.59
IV.OSSC.HHN. ML:2.2 0.0002960699 0.3584 AML other m 2018-11-08T05:57:39.42
IV.CRE.HHN. ML:2.3 0.0003294258 0.2592 AML other m 2018-11-08T05:57:42.73
IV.ATVO.HHN. ML:2.3 0.0002933093 0.5632 AML other m 2018-11-08T05:57:46.63
IV.ATVO.HHE. ML:2.2 0.00023738745 0.4992 AML other m 2018-11-08T05:57:45.29
IV.SSP9.EHE. ML:2.4 0.00041122825 0.56 AML other m 2018-11-08T05:57:47.80
IV.ATPI.EHN. ML:2.4 0.00030078675 0.4384 AML other m 2018-11-08T05:57:49.02
IV.ATFO.HHN. ML:2.5 0.00034800989999999996 0.4 AML other m 2018-11-08T05:57:50.29
IV.ATFO.HHE. ML:2.4 0.0002788465 0.5408 AML other m 2018-11-08T05:57:50.55
IV.PARC.HHN. ML:2.3 0.0002228818 0.4192 AML other m 2018-11-08T05:57:51.60
IV.ASQU.HHE. ML:2.5 0.0004014559 0.32 AML other m 2018-11-08T05:57:46.66
IV.PIEI.HHN. ML:2.1 0.000143687185 0.5408 AML other m 2018-11-08T05:57:53.44
IV.PIEI.HHE. ML:2.1 0.00012049762 0.32 AML other m 2018-11-08T05:57:53.43
IV.LMD.HHN. ML:2.0 0.000083574345 0.6816 AML other m 2018-11-08T05:57:56.92
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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 miniseed + resp format Download