Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 08-11-2018 and time 06:21:15 (Italy) in region 4 km SW Castiglione d'Orcia (SI)

A magnitude ML 2.4 earthquake occured in region: 4 km SW Castiglione d'Orcia (SI), on

  • 08-11-2018 05:21:15 (UTC)
  • 08-11-2018 06:21:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9820, 11.5790 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 9 2662 5969
Castel del Piano GR 10 4690 10659
Montalcino SI 12 5093 15752
Arcidosso GR 13 4285 20037
Pienza SI 14 2107 22144
Abbadia San Salvatore SI 14 6444 28588
Santa Fiora GR 17 2622 31210
Piancastagnaio SI 17 4230 35440
Cinigiano GR 18 2618 38058
Radicofani SI 18 1097 39155
Buonconvento SI 19 3173 42328
San Giovanni d'Asso SI 19 853 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)
59 Km SW of Arezzo (99543 inhabitants)
67 Km W of Perugia (166134 inhabitants)
76 Km NW of Viterbo (67173 inhabitants)
92 Km S of Firenze (382808 inhabitants)
92 Km W of Foligno (57155 inhabitants)
92 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 2.4 2018-11-08
05:21:15		 42.9817 11.5788 10 2019-06-04
09:16:03		 Bollettino Sismico Italiano INGV 63980021
Reviewed
Rev100 		ML 2.4 2018-11-08
05:21:15		 42.9977 11.5717 8 2018-11-08
05:30:28		 Sala Sismica INGV-Roma 62887151
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-08 05:21:15 ± 0.08
Latitude 42.9817 ± 0.0054
Longitude 11.5788 ± 0.0049
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 63980021

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 548
Semi-minor axis of confidence ellipse (meter) 420
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 181
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
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 71
Number of defining phases 63
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.09897
Number of stations at which the event was observed 42
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 58
Type of magnitude ML
Reference to an origin 62887151
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-11-08 05:30:28

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 63980021
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-12-18 08:29:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
RF.GEPF.HHZ. 2018-11-08T05:22:59.17 3.0 undecidable manual Sg 8.93 0
MN.TRI.HHZ. 2018-11-08T05:22:52.57 3.0 undecidable manual Sg 10.4 0
IV.MILN.HHZ. 2018-11-08T05:22:36.69 3.0 undecidable manual Sn -2.58 0
IV.NDIM.HHZ. 2018-11-08T05:22:11.32 3.0 undecidable manual Sn -2.21 0
IV.PAOL.HHZ. 2018-11-08T05:22:09.34 3.0 positive manual Pg 7.4 0
IV.CAPR.HNZ. 2018-11-08T05:22:08.10 3.0 undecidable manual Pg 7.32 0
IV.SFI.EHZ. 2018-11-08T05:21:45.95 0.1 undecidable manual S 12 104.6175 50 0.14 85
IV.ASQU.HHZ. 2018-11-08T05:21:42.76 0.1 undecidable manual S 11 92.0412 50 0.33 84
IV.RUFI.EHE. 2018-11-08T05:21:42.51 0.1 undecidable manual S 357 95.1381 50 -0.76 72
IV.PARC.HHZ. 2018-11-08T05:21:42.32 0.1 undecidable manual S 36 91.1421 50 0.12 88
IV.ATFO.HHZ. 2018-11-08T05:21:42.26 0.1 undecidable manual S 62 90.9423 50 0.11 88
IV.ASSB.HHZ. 2018-11-08T05:21:41.76 0.1 undecidable manual S 85 87.8454 50 0.44 82
IV.ATPI.EHZ. 2018-11-08T05:21:40.46 0.1 undecidable manual S 52 84.4488 50 0.04 90
IV.ATVO.HHZ. 2018-11-08T05:21:39.84 0.1 undecidable manual S 56 80.364 50 0.52 82
IV.MURB.HHZ. 2018-11-08T05:21:39.30 0.1 undecidable manual S 67 82.6506 50 -0.64 78
IV.SSP9.EHZ. 2018-11-08T05:21:39.60 0.1 undecidable manual S 34 79.4649 50 0.53 82
IV.BADI.EHE. 2018-11-08T05:21:39.18 0.3 undecidable manual S 42 79.4649 50 0.09 68
IV.CRE.HHZ. 2018-11-08T05:21:38.26 0.1 undecidable manual S 23 76.8675 50 -0.12 90
IV.EL6.EHZ. 2018-11-08T05:21:36.08 3.0 undecidable manual P -0.88 0
IV.ATMC.EHE. 2018-11-08T05:21:36.52 0.1 undecidable manual S 44 71.5728 50 -0.46 85
IV.LMD.HHZ. 2018-11-08T05:21:35.98 0.1 undecidable manual P 5 121.989 50 0.48 76
IV.ATVA.EHE. 2018-11-08T05:21:35.38 0.1 undecidable manual S 60 65.9895 50 -0.11 92
IV.ATTE.HHZ. 2018-11-08T05:21:35.03 0.1 undecidable manual S 69 67.1772 50 -0.78 76
IV.TOLF.HHZ. 2018-11-08T05:21:34.93 3.0 negative manual P 0.38 0
IV.OSSC.HHZ. 2018-11-08T05:21:34.86 0.1 undecidable manual S 336 65.8896 50 -0.59 82
IV.PE3.EHZ. 2018-11-08T05:21:33.79 0.1 undecidable manual P 43 108.4137 50 0.38 80
IV.CSNT.HHZ. 2018-11-08T05:21:33.49 0.1 undecidable manual S 337 59.2962 50 -0.21 91
IV.SFI.EHZ. 2018-11-08T05:21:33.25 0.1 undecidable manual P 12 104.6175 50 0.42 80
IV.TRIF.HHZ. 2018-11-08T05:21:32.71 0.1 undecidable manual S 285 56.7987 50 -0.32 90
IV.ATFO.HHZ. 2018-11-08T05:21:31.14 0.1 undecidable manual P 62 90.9423 50 0.42 82
IV.ASQU.HHZ. 2018-11-08T05:21:31.14 0.1 undecidable manual P 11 92.0412 50 0.26 85
IV.ASSB.HHZ. 2018-11-08T05:21:31.07 0.1 undecidable manual P 85 87.8454 50 0.83 71
IV.RUFI.EHE. 2018-11-08T05:21:31.63 0.1 undecidable manual P 357 95.1381 50 0.26 84
IV.PARC.HHZ. 2018-11-08T05:21:30.67 0.1 undecidable manual P 36 91.1421 50 -0.08 88
IV.ATPI.EHZ. 2018-11-08T05:21:29.85 0.1 undecidable manual P 52 84.4488 50 0.13 89
IV.LATE.HHZ. 2018-11-08T05:21:29.71 0.1 undecidable manual S 156 44.7219 50 -0.1 96
IV.BADI.EHE. 2018-11-08T05:21:29.60 0.3 undecidable manual P 42 79.4649 50 0.65 59
IV.MOMA.HHZ. 2018-11-08T05:21:29.90 0.1 undecidable manual P 103 82.9503 50 0.42 84
IV.MURB.HHZ. 2018-11-08T05:21:29.42 0.1 undecidable manual P 67 82.6506 50 -0.02 91
IV.SSP9.EHZ. 2018-11-08T05:21:29.33 0.1 undecidable manual P 34 79.4649 50 0.39 85
IV.RIBO.EHZ.01 2018-11-08T05:21:29.20 0.1 undecidable manual S 265 43.3233 50 -0.25 93
IV.FROS.HHZ. 2018-11-08T05:21:28.94 0.1 undecidable manual S 307 42.5241 50 -0.3 93
IV.CRE.HHZ. 2018-11-08T05:21:28.67 0.1 undecidable manual P 23 76.8675 50 0.13 90
IV.ATVO.HHZ. 2018-11-08T05:21:28.92 0.1 undecidable manual P 56 80.364 50 -0.16 89
IV.MAON.HHZ. 2018-11-08T05:21:28.41 0.1 undecidable manual P 211 71.4729 50 0.7 77
IV.ATMC.EHE. 2018-11-08T05:21:27.37 0.1 undecidable manual P 44 71.5728 50 -0.37 86
IV.ATVA.EHE. 2018-11-08T05:21:26.24 0.1 undecidable manual P 60 65.9895 50 -0.63 81
IV.TRIF.HHZ. 2018-11-08T05:21:26.00 0.1 undecidable manual P 285 56.7987 50 0.55 85
IV.OSSC.HHZ. 2018-11-08T05:21:26.46 0.1 undecidable manual P 336 65.8896 50 -0.39 87
IV.ATTE.HHZ. 2018-11-08T05:21:26.64 0.1 undecidable manual P 69 67.1772 50 -0.41 86
IV.CSNT.HHZ. 2018-11-08T05:21:25.17 0.1 undecidable manual P 337 59.2962 50 -0.67 80
IV.LATE.HHZ. 2018-11-08T05:21:24.02 0.1 undecidable manual P 156 44.7219 50 0.43 90
TV.SF14.HHN. 2018-11-08T05:21:23.58 0.1 undecidable manual S 173 25.2525 111 -0.92 77
IV.RIBO.EHZ.01 2018-11-08T05:21:23.76 0.1 undecidable manual P 265 43.3233 50 0.38 91
IV.FROS.HHZ. 2018-11-08T05:21:23.11 0.1 positive manual P 307 42.5241 50 -0.15 95
IV.CAFI.HHZ. 2018-11-08T05:21:23.73 0.1 undecidable manual P 39 49.7169 50 -0.63 83
IV.MCIV.HHZ. 2018-11-08T05:21:23.41 0.1 undecidable manual S 161 23.8539 112 -0.63 87
IV.ARCI.HHZ. 2018-11-08T05:21:22.20 0.1 undecidable manual S 210 16.6722 120 0.41 94
TV.SF13.HHN. 2018-11-08T05:21:22.18 0.1 undecidable manual S 170 18.3705 118 -0.13 100
TV.SF01.EHZ. 2018-11-08T05:21:22.63 0.1 undecidable manual S 184 18.87 117 0.17 99
TV.SF03.EHN. 2018-11-08T05:21:22.95 0.1 undecidable manual S 156 21.6672 114 -0.38 94
TV.SF04.EHZ. 2018-11-08T05:21:21.81 0.1 undecidable manual S 158 17.4714 119 -0.22 98
IV.MCIV.HHZ. 2018-11-08T05:21:20.34 0.1 positive manual P 161 23.8539 112 0.08 100
TV.SF14.HHN. 2018-11-08T05:21:20.20 0.1 positive manual P 173 25.2525 111 -0.33 95
TV.SF11.HHZ. 2018-11-08T05:21:20.99 0.1 undecidable manual S 147 14.9739 123 -0.28 97
TV.SF03.EHN. 2018-11-08T05:21:19.99 0.1 undecidable manual P 156 21.6672 114 0.14 99
IV.ARCI.HHZ. 2018-11-08T05:21:19.27 0.1 undecidable manual P 210 16.6722 120 0.31 97
TV.SF04.EHZ. 2018-11-08T05:21:19.36 0.1 undecidable manual P 158 17.4714 119 0.26 97
TV.SF13.HHN. 2018-11-08T05:21:19.54 0.1 positive manual P 170 18.3705 118 0.28 97
TV.SF01.EHZ. 2018-11-08T05:21:19.60 0.1 undecidable manual P 184 18.87 117 0.25 97
TV.SF11.HHZ. 2018-11-08T05:21:18.84 0.1 undecidable manual P 147 14.9739 123 0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FROS.HHN. ML:2.4 0.00078695905 0.176 AML other m 2018-11-08T05:21:29.74
IV.CAFI.HNE. ML:2.2 0.00037845635 0.4 AML other m 2018-11-08T05:21:30.65
IV.CAFI.HHE. ML:2.2 0.0003783284 0.32 AML other m 2018-11-08T05:21:30.64
IV.RIBO.EHE.01 ML:2.5 0.0009046077999999999 0.2592 AML other m 2018-11-08T05:21:31.14
IV.LATE.HHE. ML:2.4 0.0007965455499999999 0.2016 AML other m 2018-11-08T05:21:30.89
IV.CSNT.HHN. ML:2.2 0.0003492339 0.1408 AML other m 2018-11-08T05:21:34.34
IV.CSNT.HHE. ML:2.2 0.00032008915000000007 0.2592 AML other m 2018-11-08T05:21:33.77
IV.ATTE.HHE. ML:2.7 0.0008172822 0.6016 AML other m 2018-11-08T05:21:38.67
IV.CRE.HHN. ML:2.2 0.0002371709 0.3392 AML other m 2018-11-08T05:21:40.29
IV.CRE.HHE. ML:2.2 0.0002176858 0.32 AML other m 2018-11-08T05:21:40.53
IV.ATVO.HHN. ML:2.5 0.00048184974999999994 0.64 AML other m 2018-11-08T05:21:43.64
IV.ATVO.HHE. ML:2.5 0.00046839304999999996 0.3392 AML other m 2018-11-08T05:21:44.49
IV.MOMA.HHE. ML:2.2 0.00022982805 0.3392 AML other m 2018-11-08T05:21:44.18
IV.MOMA.HNE. ML:2.3 0.00026189165 0.3424 AML other m 2018-11-08T05:21:44.19
IV.PARC.HHE. ML:2.3 0.0002519326 0.7392 AML other m 2018-11-08T05:21:48.58
IV.ASSB.HHE. ML:2.3 0.00024546145 0.4416 AML other m 2018-11-08T05:21:47.83
IV.ASSB.HHN. ML:2.2 0.00020506 0.4192 AML other m 2018-11-08T05:21:48.22
IV.ATFO.HHN. ML:2.7 0.0005615707 0.5216 AML other m 2018-11-08T05:21:47.52
IV.ATFO.HHE. ML:2.7 0.0006373613499999999 0.72 AML other m 2018-11-08T05:21:47.86
IV.ASQU.HHE. ML:2.3 0.00021980374999999998 0.5024 AML other m 2018-11-08T05:21:46.03
IV.ASQU.HHN. ML:2.3 0.0002317482 0.72 AML other m 2018-11-08T05:21:47.09
IV.SFI.HNN. ML:2.3 0.000179968275 0.7904 AML other m 2018-11-08T05:21:50.20
IV.SFI.HNE. ML:2.6 0.00033112454999999994 0.928 AML other m 2018-11-08T05:21:51.42
IV.SFI.EHE. ML:2.4 0.0002466122 1.04 AML other m 2018-11-08T05:21:51.35
IV.TOLF.HHE. ML:2.1 0.00010298452999999998 0.72 AML other m 2018-11-08T05:21:53.38
IV.LMD.HHE. ML:2.1 0.00009089106 0.6816 AML other m 2018-11-08T05:21:55.44
IV.EL6.EHN. ML:2.5 0.00022199535 0.3808 AML other m 2018-11-08T05:21:56.75
IV.EL6.EHE. ML:2.6 0.00024502089999999996 0.8384 AML other m 2018-11-08T05:21:58.20
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