Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 08-11-2018 and time 06:12:30 (Italy) in region 4 km SW Castiglione d'Orcia (SI)

A magnitude ML 2.2 earthquake occured in region: 4 km SW Castiglione d'Orcia (SI), on

  • 08-11-2018 05:12:30 (UTC)
  • 08-11-2018 06:12:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9770, 11.5810 at 12 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 4 2346 2346
Seggiano GR 6 961 3307
San Quirico d'Orcia SI 10 2662 5969
Castel del Piano GR 10 4690 10659
Montalcino SI 12 5093 15752
Arcidosso GR 12 4285 20037
Abbadia San Salvatore SI 13 6444 26481
Pienza SI 14 2107 28588
Santa Fiora GR 16 2622 31210
Piancastagnaio SI 17 4230 35440
Radicofani SI 18 1097 36537
Cinigiano GR 18 2618 39155
San Giovanni d'Asso SI 20 853 40008
Buonconvento SI 20 3173 43181

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km SE of Siena (53903 inhabitants)
45 Km NE of Grosseto (82087 inhabitants)
60 Km SW of Arezzo (99543 inhabitants)
67 Km W of Perugia (166134 inhabitants)
76 Km NW of Viterbo (67173 inhabitants)
91 Km W of Foligno (57155 inhabitants)
92 Km S of Firenze (382808 inhabitants)
93 Km SE of Scandicci (50609 inhabitants)
99 Km W of Terni (111501 inhabitants)
100 Km N of Civitavecchia (52991 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 2.2 2018-11-08
05:12:30		 42.9773 11.5813 12 2019-06-04
09:16:03		 Bollettino Sismico Italiano INGV 63965481
Reviewed
Rev100 		ML 2.3 2018-11-08
05:12:30		 42.9842 11.5902 10 2018-11-08
05:23:11		 Sala Sismica INGV-Roma 62886461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-08 05:12:30 ± 0.06
Latitude 42.9773 ± 0.0027
Longitude 11.5813 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 63965481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 112
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 39
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
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 59
Number of defining phases 56
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.10167
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 63965481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-12-17 11:04:24

ML:2.3

Field Value
Value 2.3
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 62886461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-11-08 05:23:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IMI.HHZ. 2018-11-08T05:13:52.36 3.0 undecidable manual Sn 1.43 0
IV.MILN.HNZ. 2018-11-08T05:13:51.76 3.0 undecidable manual Sn -2.93 0
IV.CERA.HHZ. 2018-11-08T05:13:07.70 3.0 undecidable manual Pn -0.06 0
IV.FDMO.HHZ. 2018-11-08T05:13:05.90 0.3 undecidable manual S 86 122.2887 90 0.49 56
IV.SEI.HHZ. 2018-11-08T05:13:05.11 0.3 undecidable manual S 352 120.7902 90 0.11 62
IV.PARC.HHZ. 2018-11-08T05:12:57.35 0.1 undecidable manual S 35 91.4418 91 0.19 85
IV.ASQU.HHZ. 2018-11-08T05:12:57.66 0.1 undecidable manual S 10 92.4408 90 0.23 85
IV.RUFI.EHE. 2018-11-08T05:12:57.49 0.1 undecidable manual S 357 95.6376 90 -0.8 67
IV.ATPI.EHZ. 2018-11-08T05:12:55.72 0.1 undecidable manual S 51 84.6486 91 0.38 83
IV.MURB.HHZ. 2018-11-08T05:12:54.89 0.1 undecidable manual S 67 82.6506 91 0.06 88
IV.MOMA.HHZ. 2018-11-08T05:12:54.63 0.1 undecidable manual S 103 82.6506 91 -0.18 86
IV.CRE.HHZ. 2018-11-08T05:12:52.75 0.1 undecidable manual S 23 77.1672 91 -0.61 76
IV.ATTE.HHZ. 2018-11-08T05:12:50.35 0.1 undecidable manual S 68 67.1772 91 -0.34 85
IV.PII.HHZ. 2018-11-08T05:12:50.73 0.1 undecidable manual P 314 118.6923 90 0.72 72
IV.FDMO.HHZ. 2018-11-08T05:12:50.62 0.3 undecidable manual P 86 122.2887 90 0.05 62
IV.ATVA.EHE. 2018-11-08T05:12:50.59 0.1 undecidable manual S 59 66.0894 91 0.2 89
IV.SEI.HHZ. 2018-11-08T05:12:50.28 0.3 undecidable manual P 352 120.7902 90 -0.06 60
IV.OSSC.HHZ. 2018-11-08T05:12:50.51 0.1 undecidable manual S 336 66.378 91 0.03 90
IV.CSNT.HHZ. 2018-11-08T05:12:48.39 0.1 undecidable manual S 337 59.7957 91 -0.33 85
IV.TRIF.HHZ. 2018-11-08T05:12:47.30 0.1 undecidable manual S 286 57.0984 91 -0.7 73
IV.RUFI.EHE. 2018-11-08T05:12:46.85 0.1 undecidable manual P 357 95.6376 90 0.39 82
IV.ASQU.HHZ. 2018-11-08T05:12:46.25 0.1 undecidable manual P 10 92.4408 90 0.29 84
IV.MAGO.HHZ. 2018-11-08T05:12:45.13 0.1 undecidable manual P 294 81.6516 91 0.83 74
IV.ASSB.HHN. 2018-11-08T05:12:45.86 0.3 undecidable manual P 85 87.6456 91 0.63 58
IV.PARC.HHZ. 2018-11-08T05:12:45.79 0.1 undecidable manual P 35 91.4418 91 -0.02 86
IV.MOMA.HHZ. 2018-11-08T05:12:45.00 0.1 undecidable manual P 103 82.6506 91 0.55 80
IV.LATE.HHZ. 2018-11-08T05:12:44.45 0.1 undecidable manual S 156 44.2224 91 -0.11 92
IV.ATPI.EHZ. 2018-11-08T05:12:44.65 0.1 undecidable manual P 51 84.6486 91 -0.11 86
IV.RIBO.EHZ.01 2018-11-08T05:12:44.06 0.1 undecidable manual S 266 43.5231 91 -0.32 87
IV.MURB.HHZ. 2018-11-08T05:12:44.93 0.1 undecidable manual P 67 82.6506 91 0.47 82
IV.FROS.HHZ. 2018-11-08T05:12:43.60 0.1 undecidable manual S 307 43.0236 91 -0.64 77
IV.CRE.HHZ. 2018-11-08T05:12:43.83 0.1 undecidable manual P 23 77.1672 91 0.22 87
IV.ATVO.HHZ. 2018-11-08T05:12:43.86 0.1 undecidable manual P 56 80.4639 91 -0.26 84
IV.MAON.HHZ. 2018-11-08T05:12:43.57 0.1 undecidable manual P 211 71.1732 91 0.89 73
IV.ATVA.EHE. 2018-11-08T05:12:41.40 0.1 undecidable manual P 59 66.0894 91 -0.5 81
IV.TRIF.HHZ. 2018-11-08T05:12:41.22 0.1 negative manual P 286 57.0984 91 0.7 82
IV.OSSC.HHZ. 2018-11-08T05:12:41.48 0.1 undecidable manual P 336 66.378 91 -0.47 80
IV.ATTE.HHZ. 2018-11-08T05:12:41.89 0.1 undecidable manual P 68 67.1772 91 -0.18 88
IV.CSNT.HHZ. 2018-11-08T05:12:40.31 0.1 positive manual P 337 59.7957 91 -0.63 76
IV.LATE.HHZ. 2018-11-08T05:12:39.02 0.1 positive manual P 156 44.2224 91 0.49 88
TV.SF03.EHN. 2018-11-08T05:12:38.06 0.1 undecidable manual S 156 21.1677 95 -0.34 92
IV.FROS.HHZ. 2018-11-08T05:12:38.25 0.1 undecidable manual P 307 43.0236 91 -0.1 92
TV.SF14.HHN. 2018-11-08T05:12:38.64 0.1 undecidable manual S 174 24.753 93 -0.74 78
IV.RIBO.EHZ.01 2018-11-08T05:12:38.89 0.1 undecidable manual P 266 43.5231 91 0.46 89
IV.MCIV.HHZ. 2018-11-08T05:12:38.56 0.1 undecidable manual S 161 23.3544 94 -0.44 89
IV.CAFI.HHZ. 2018-11-08T05:12:38.83 0.1 undecidable manual P 38 49.9167 91 -0.58 81
IV.ARCI.HHZ. 2018-11-08T05:12:37.51 0.1 undecidable manual S 212 16.3725 101 0.37 95
TV.SF01.EHZ. 2018-11-08T05:12:37.65 0.1 undecidable manual S 185 18.3705 97 -0.03 98
TV.SF13.HHN. 2018-11-08T05:12:37.39 0.1 undecidable manual S 170 17.871 98 -0.16 96
TV.SF11.HHZ. 2018-11-08T05:12:36.18 0.1 undecidable manual S 147 14.4744 106 -0.46 91
TV.SF04.EHZ. 2018-11-08T05:12:36.86 0.1 undecidable manual S 158 16.9719 100 -0.44 90
IV.MCIV.HHZ. 2018-11-08T05:12:35.54 0.1 positive manual P 161 23.3544 94 0.22 96
TV.SF03.EHN. 2018-11-08T05:12:35.19 0.1 positive manual P 156 21.1677 95 0.21 97
TV.SF14.HHN. 2018-11-08T05:12:35.42 0.1 positive manual P 174 24.753 93 -0.12 95
TV.SF13.HHN. 2018-11-08T05:12:34.71 0.1 positive manual P 170 17.871 98 0.23 97
TV.SF04.EHZ. 2018-11-08T05:12:34.43 0.1 undecidable manual P 158 16.9719 100 0.09 100
IV.ARCI.HHZ. 2018-11-08T05:12:34.47 0.1 positive manual P 212 16.3725 101 0.22 98
TV.SF01.EHZ. 2018-11-08T05:12:34.81 0.1 positive manual P 185 18.3705 97 0.25 97
TV.SF11.HHZ. 2018-11-08T05:12:33.85 0.1 undecidable manual P 147 14.4744 106 -0.11 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARCI.HHE. ML:2.3 0.0016275445 0.3392 AML other m 2018-11-08T05:12:36.44
IV.MCIV.HHE. ML:2.4 0.0016111119999999998 0.5024 AML other m 2018-11-08T05:12:39.75
IV.FROS.HHN. ML:2.5 0.00103913335 0.1664 AML other m 2018-11-08T05:12:44.78
IV.CAFI.HHN. ML:1.9 0.00020178455000000002 0.3008 AML other m 2018-11-08T05:12:46.39
IV.CAFI.HNE. ML:2.1 0.00029826055000000003 0.4384 AML other m 2018-11-08T05:12:46.30
IV.RIBO.EHE.01 ML:2.6 0.00123329275 0.1984 AML other m 2018-11-08T05:12:46.32
IV.LATE.HHE. ML:2.1 0.0003818368 0.24 AML other m 2018-11-08T05:12:45.91
IV.CSNT.HHE. ML:2.2 0.00035531745 0.2368 AML other m 2018-11-08T05:12:49.09
IV.CSNT.HHN. ML:2.2 0.00030045835 0.2624 AML other m 2018-11-08T05:12:49.39
IV.TRIF.HHE. ML:2.3 0.00044511785000000005 0.208 AML other m 2018-11-08T05:12:50.08
IV.OSSC.HHE. ML:2.0 0.0001948178 0.3392 AML other m 2018-11-08T05:12:51.68
IV.OSSC.HNN. ML:2.0 0.00018890572 0.32 AML other m 2018-11-08T05:12:51.67
IV.OSSC.HNE. ML:2.1 0.0002102223 0.4512 AML other m 2018-11-08T05:12:52.14
IV.OSSC.HHN. ML:2.0 0.00017132185 0.4224 AML other m 2018-11-08T05:12:51.53
IV.ATTE.HHE. ML:2.3 0.00037274645 0.48 AML other m 2018-11-08T05:12:53.73
IV.MAON.HHN. ML:1.9 0.00011903385 0.8 AML other m 2018-11-08T05:12:57.40
IV.MAON.HHE. ML:1.9 0.00012006822999999999 0.4576 AML other m 2018-11-08T05:12:57.20
IV.CRE.HHE. ML:2.1 0.0001711476 0.2976 AML other m 2018-11-08T05:12:57.37
IV.CRE.HHN. ML:2.2 0.00024057155 0.2816 AML other m 2018-11-08T05:12:57.20
IV.ATVO.HHE. ML:2.2 0.00022925725 0.4416 AML other m 2018-11-08T05:13:00.66
IV.ATVO.HHN. ML:2.3 0.00028181665 0.4 AML other m 2018-11-08T05:12:59.82
IV.ATPI.EHN. ML:2.3 0.000237401 0.48 AML other m 2018-11-08T05:13:00.85
IV.MOMA.HHN. ML:1.9 0.00010440352 0.4832 AML other m 2018-11-08T05:13:01.82
IV.PARC.HHE. ML:2.1 0.00015476115 0.4384 AML other m 2018-11-08T05:13:03.61
IV.PARC.HHN. ML:2.2 0.00015929475 0.6592 AML other m 2018-11-08T05:13:03.65
IV.ASQU.HHE. ML:2.5 0.0003205062 0.3424 AML other m 2018-11-08T05:12:58.72
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