Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 24-10-2022 and time 01:38:11 (Italy) in region 7 km W Montalcino (SI)

A magnitude ML 1.5 earthquake occured in region: 7 km W Montalcino (SI), on

  • 23-10-2022 23:38:11 (UTC)
  • 24-10-2022 01:38:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0360, 11.4180 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
Montalcino SI 7 5093 5093
Civitella Paganico GR 12 3154 8247
Buonconvento SI 13 3173 11420
Murlo SI 15 2389 13809
San Quirico d'Orcia SI 15 2662 16471
Cinigiano GR 16 2618 19089
Seggiano GR 17 961 20050
Castiglione d'Orcia SI 17 2346 22396
Castel del Piano GR 19 4690 27086
San Giovanni d'Asso SI 19 853 27939

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km S of Siena (53903 inhabitants)
39 Km NE of Grosseto (82087 inhabitants)
61 Km SW of Arezzo (99543 inhabitants)
79 Km W of Perugia (166134 inhabitants)
83 Km S of Firenze (382808 inhabitants)
83 Km S of Scandicci (50609 inhabitants)
89 Km NW of Viterbo (67173 inhabitants)
98 Km S of Prato (191150 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 1.5 2022-10-23
23:38:11		 43.0362 11.4182 10 2024-03-01
15:28:08		 Bollettino Sismico Italiano INGV 112517601
Reviewed
Rev100 		ML 1.5 2022-10-23
23:38:11		 43.0332 11.4193 10 2022-10-23
23:43:33		 Sala Sismica INGV-Roma 111121861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-10-23 23:38:11 ± 0.08
Latitude 43.0362 ± 0.0063
Longitude 11.4182 ± 0.0098
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 112517601

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 879
Semi-minor axis of confidence ellipse (meter) 512
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 61
Circular confidence region, given by single value of horizontal uncertainty (meter) 880.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.50272
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 14
Type of magnitude ML
Reference to an origin 112517601
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-12-05 10:30:28

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 14
Type of magnitude ML
Reference to an origin 111121861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-10-23 23:43:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FNVD.HHZ. 2022-10-23T23:38:46.49 3.0 undecidable manual S -0.21 0
IV.ATMI.HHZ. 2022-10-23T23:38:36.09 3.0 undecidable manual S -0.06 0
IV.MURB.HNZ. 2022-10-23T23:38:29.80 3.0 undecidable manual P 2.71 0
IV.OSSC.HHZ. 2022-10-23T23:38:28.72 0.3 undecidable manual S 346 55.7997 50 -0.44 65
IV.CSNT.HHZ. 2022-10-23T23:38:27.18 0.3 undecidable manual S 348 49.5171 50 -0.3 68
IV.MCIV.CHZ. 2022-10-23T23:38:23.33 0.1 undecidable manual S 144 35.4423 50 -0.39 91
IV.RIBO.EHZ.01 2022-10-23T23:38:22.04 0.3 undecidable manual S 252 31.6461 50 -0.66 63
IV.MGAB.HHZ. 2022-10-23T23:38:22.50 3.0 undecidable manual P -0.08 0
IV.CAFI.HHZ. 2022-10-23T23:38:21.99 0.3 undecidable manual P 54 55.0005 50 0.44 65
IV.OSSC.HHZ. 2022-10-23T23:38:21.72 0.3 undecidable manual P 346 55.7997 50 0.03 71
TV.SF11.HHN. 2022-10-23T23:38:21.07 0.3 undecidable manual S 131 28.1496 50 -0.7 62
IV.CASP.HHZ. 2022-10-23T23:38:21.74 0.3 undecidable manual P 239 52.503 50 0.57 63
IV.FROS.CHZ. 2022-10-23T23:38:21.84 0.3 undecidable manual S 312 28.6491 50 -0.05 74
IV.CSNT.HHZ. 2022-10-23T23:38:20.67 0.1 undecidable manual P 348 49.5171 50 -0.05 95
IV.SACS.HHZ. 2022-10-23T23:38:20.61 0.3 undecidable manual P 117 45.0216 50 0.59 63
IV.ARCI.HHZ. 2022-10-23T23:38:19.32 0.3 undecidable manual S 167 20.9679 115 -0.18 73
IV.MCIV.CHZ. 2022-10-23T23:38:18.89 0.1 negative manual P 144 35.4423 50 0.34 92
IV.RIBO.EHZ.01 2022-10-23T23:38:18.16 0.1 undecidable manual P 252 31.6461 50 0.19 95
IV.FROS.CHZ. 2022-10-23T23:38:17.49 0.1 negative manual P 312 28.6491 50 0 100
TV.SF11.HHN. 2022-10-23T23:38:17.72 0.1 undecidable manual P 131 28.1496 50 0.29 94
IV.ARCI.HHZ. 2022-10-23T23:38:16.33 0.1 undecidable manual P 167 20.9679 115 0.22 97
IV.MALA1.EHE. 2022-10-23T23:38:15.08 0.1 undecidable manual S 127 5.994 148 -0.35 96
IV.MALA2.EHE. 2022-10-23T23:38:15.32 0.3 undecidable manual S 126 6.0939 148 -0.13 76
IV.MALA5.EHE. 2022-10-23T23:38:15.23 0.1 undecidable manual S 124 5.8941 149 -0.18 100
IV.MALA1.EHE. 2022-10-23T23:38:14.00 0.1 negative manual P 127 5.994 148 0.24 99
IV.MALA0.EHE. 2022-10-23T23:38:14.91 0.1 undecidable manual S 127 5.5944 150 -0.46 94
IV.MALA2.EHE. 2022-10-23T23:38:14.01 0.1 negative manual P 126 6.0939 148 0.23 99
IV.MALA0.EHE. 2022-10-23T23:38:13.95 0.1 negative manual P 127 5.5944 150 0.22 99
IV.MALA5.EHE. 2022-10-23T23:38:13.97 0.1 undecidable manual P 124 5.8941 149 0.22 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARCI.HNN. ML:1.6 0.0003185 0.28 AML other m 2022-10-23T23:38:20.31
IV.ARCI.HHN. ML:1.7 0.000326 0.28 AML other m 2022-10-23T23:38:20.31
IV.ARCI.HNE. ML:1.6 0.00026700000000000004 1.68 AML other m 2022-10-23T23:38:22.06
IV.ARCI.HHE. ML:1.6 0.00029200000000000005 1.34 AML other m 2022-10-23T23:38:22.07
IV.FROS.CHE. ML:1.6 0.0001805 0.86 AML other m 2022-10-23T23:38:22.88
IV.MCIV.CHE. ML:1.3 0.0000791 0.76 AML other m 2022-10-23T23:38:23.88
IV.MCIV.CHN. ML:1.4 0.00009709999999999999 1.2 AML other m 2022-10-23T23:38:23.86
IV.FROS.CHN. ML:1.6 0.0001855 0.36 AML other m 2022-10-23T23:38:24.39
IV.CSNT.HHE. ML:1.4 0.0000703 0.28 AML other m 2022-10-23T23:38:29.29
IV.CSNT.HHN. ML:1.3 0.00005434999999999999 0.36 AML other m 2022-10-23T23:38:29.31
IV.OSSC.HHN. ML:1.3 0.0000505 0.74 AML other m 2022-10-23T23:38:30.23
IV.OSSC.HHE. ML:1.3 0.00005 0.88 AML other m 2022-10-23T23:38:32.58
IV.ATMI.HHE. ML:1.5 0.00004885 0.36 AML other m 2022-10-23T23:38:39.78
IV.ATMI.HHN. ML:1.5 0.00005035 0.88 AML other m 2022-10-23T23:38:44.53
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